Energy efficiency news.
Rebate updates, policy changes, and technology developments — aggregated from 50+ sources, AI-enriched, and scored for relevance.
PJM eyes option to jumpstart surplus interconnection pathway
This is a grid-planning story, not a home-improvement one, but it touches on why power in parts of the country may get tighter or looser in coming years. PJM, the grid operator covering much of the mid-Atlantic and parts of the Midwest and South, has been struggling to line up enough power supply — it missed its reserve targets in its last two capacity auctions, with shortfalls growing to nearly 7 gigawatts for 2028-29. One fix PJM is now pursuing more seriously: letting new solar, wind, and battery projects plug into the grid at existing power plants by using capacity those plants aren't fully using, a process called surplus interconnection service. This can bring new power online faster and cheaper than building brand-new grid connections, but PJM's rules have made it hard to actually do, and only two of eight applications since 2023 have been approved. PJM is now considering rule changes, including how battery-plus-solar "hybrid" projects can operate, to make this pathway more workable. For homeowners, this is background context rather than something requiring any action. Faster, cheaper ways to add power supply — especially batteries and solar built onto existing plants — could help ease the kind of supply crunches that show up in rising electricity bills or reliability concerns, particularly in PJM states. Indiana and Virginia have also passed laws directing their utilities to study this option. There's no rebate, deadline, or program here for individual homeowners to act on — it's a look at how grid operators are trying to keep the lights on and prices in check as demand grows.
Utility-Scale solar buyers are no longer buying on certification alone
This is a story about how large solar developers buy equipment, not about home solar directly, but it's worth knowing if you're weighing a rooftop system. For years, solar panels only needed to pass standard safety certifications (IEC and U.S. standards) to be considered good enough to buy. Big buyers are now finding that's not enough, because certification only tests a sample at one point in time and doesn't catch later changes to materials or manufacturing. The case that prompted this: a developer built a two-phase project using panels supposedly made the same way. One phase had a 1% glass breakage rate; the other hit nearly 15%. Testing traced the problem to an undisclosed change in glass supplier that the manufacturer didn't think mattered, but it did. Separately, industry data shows the typical solar system produced about 98.6% of its expected energy output in 2024, down from around 102% in 2020, with weaker-performing projects dropping from 90% to 85% of expectations. None of this changes what's on the market for home solar, but it's a reminder that panel quality can vary even within the same product line, and that a manufacturer's spec sheet or basic certification doesn't guarantee consistent long-term performance. If you're shopping for a home system, it may be worth asking whether panels have been tested beyond minimum certification requirements, especially for durability in your area's climate, such as heat, humidity, hail, or heavy wind.
Solar recycler flags certification gap, reuse market concerns
A recycling industry executive is raising questions about how solar panels get recycled and reused once they reach the end of their life. This is mostly industry news, but it touches on what happens to panels after they come off a roof or field. The interview centers on a certification standard called R2V3 Appendix G, which sets rules for how solar recycling should be done. A January 2027 deadline is approaching, but the CEO of one recycling company says there's no real pressure for standalone solar recyclers to pursue it, since major utilities and installers aren't requiring it yet. A trade association committee has reportedly been working on a solar-specific standard instead. For a homeowner, this mainly means the recycling industry is still sorting out quality standards, so there's no single certification yet that guarantees how thoroughly a given recycler recovers materials like silver, copper, and silicon from old panels. The other concern raised is about "reused" panels. According to the executive, some old panels marketed as being shipped overseas for reuse are actually being moved mainly to profit from their aluminum frames, not because they're safely reusable. He notes that in the US, a panel's UL safety rating (the mark showing it meets electrical safety standards) becomes invalid once it's been used, which limits how panels can legally be reconnected to the grid. If you're ever considering used solar panels, or wondering what happens to panels removed during a roof or system replacement, this suggests the "reuse" label isn't yet a reliable guarantee of quality or safety.
PV life cycle assessment gets its most comprehensive data overhaul in more than a decade
A group that tracks solar power's environmental impact worldwide, IEA PVPS, has released a major update to the data used to calculate the carbon footprint and environmental impact of solar panels. This is mostly technical, behind-the-scenes work, but it affects how "green" claims about solar panels get calculated and verified. The update draws on data from 83 factories, most in China, covering the full manufacturing chain for today's most common solar panel types, including TOPCon, which is now replacing the older PERC technology in new panels. It also reflects that home solar systems have gotten bigger: the standard "typical home system" used in these calculations is now sized at 10 kilowatts, up from 3 kilowatts, matching how much bigger actual rooftop installations have grown in recent years. Researchers caution the data may skew slightly toward cleaner, export-focused factories rather than the full range of global manufacturing, though they corrected for one major source of bias by using each country's average electricity mix rather than individual factories' own claims. For a homeowner, this doesn't change what panels cost or which rebates apply. It matters mainly if you care about the environmental footprint of the panels going on your roof: this dataset is what companies, regulators, and green-finance programs will now use as the reference point for calculating a solar system's lifecycle carbon impact. Newer panel technology, according to the updated figures, comes with a meaningfully smaller manufacturing footprint than older industry estimates assumed.
ERCOT aims to complete Texas governor’s data center audit by December
Texas's grid operator, ERCOT, is working through an audit of hundreds of proposed data centers, with a goal of finishing by December 10. The review stems from an August 3 order by Gov. Greg Abbott pausing new data center connections to the grid until questions about their energy and water use, and use of public funds, are answered. About 300 large data center projects are caught up in the review, along with an audit of data centers and crypto facilities down to a smaller size. For homeowners, this is not something that changes your bills or rebates right away, but it matters for the bigger picture of grid strain in Texas. Data centers make up roughly 90% of the massive backlog of projects waiting to connect to ERCOT's grid, though experts think much of that demand may be inflated or duplicated. How this shakes out affects how much new electricity demand the Texas grid has to plan for in coming years, which in turn shapes electricity prices and reliability, including during hot summers and winter storms when many homeowners already worry about outages. ERCOT officials say a separate, related study on how these large loads affect grid stability likely will not be finished by an earlier April 2027 deadline, and the timeline is still being worked out. There is no new action for homeowners here, but the outcome could influence electricity costs and grid reliability in Texas over the next few years.
In a drier world, some infectious diseases are unexpectedly thriving
This one isn't really about home energy upgrades, but here's the gist: a new scientific review looked at nearly 100 studies on how drought affects the spread of disease in humans and animals. The finding is counterintuitive — droughts don't just shrink water-borne diseases, they sometimes fuel them. Cholera, West Nile virus, and dengue can boom during dry spells, even though other diseases like malaria and schistosomiasis (a flatworm infection called snail fever) tend to drop when water disappears. Researchers call this the "drought-disease paradox." The mechanism often comes down to crowding. When ponds and watering holes dry up, animals and disease-carrying insects concentrate around the water that's left, making it easier for parasites and viruses to spread. Droughts in California have been linked to spikes in valley fever and West Nile virus, a 2017 drought in Somalia contributed to a major cholera outbreak, and dengue risk in Brazil has risen months after dry periods. Researchers also point to "weather whiplash" — heavy rain followed by drought — as a pattern that can make outbreaks worse, since some fungi and bacteria grow during wet spells, then dry out and spread as dust or in concentrated water sources. None of this points to a specific action for your house, but it's a reminder that as droughts become more common and more severe with a warming climate, the health effects reach beyond water shortages and cracked farmland — they can shape which infectious diseases show up in your area and when.
Poland Created Hydrogen Bus Demand. Polenergia Still Walked Away From Supply.
Poland has been trying to build a hydrogen bus industry, and on the demand side it worked. With public subsidies covering buses, refueling stations, and hydrogen production, the country had 153 hydrogen buses registered by April 2026, with 140 already running and more on order. The idea was that subsidized buses would need fuel, fuel demand would justify local hydrogen plants, and a domestic industry would grow from there. The supply side has not followed. Polenergia, Poland's largest private energy company, got further than most: it built a hydrogen plant to permitting stage, had equipment tested and ready, and had support from an international lender. It even won a 15-year contract, worth about 120 million zloty, to supply fuel for 20 buses in the city of Rzeszów. Then, in January 2025, Polenergia walked away from that contract, citing legal problems with the tender and doubts it could deliver hydrogen on time. Around the same time, the company's broader strategy shifted toward pulling back from hydrogen transport altogether, pointing to financing limits and project risk. None of this changes anything for homeowners directly — this is about buses and industrial hydrogen policy in Poland, not home energy equipment. But it's a reminder that hydrogen for everyday uses like transportation remains expensive and hard to supply reliably, even with heavy government support, while direct electric options continue to be the simpler bet.
Your foundation supplier should be your partner, not your competitor
This is a business story about the solar equipment industry, and it does not have a direct action for homeowners to take. Large solar equipment makers, the companies that build the racking and tracking systems that hold solar panels in place, are buying up the smaller companies that make ground screws and foundations. The idea is to sell contractors a single bundled package instead of separate parts from separate suppliers. The concern raised is about what this consolidation does to competition. When a foundation supplier is owned by one of the big equipment makers, contractors who buy from them may end up sharing pricing, project timing, and site details with a company that is also their competitor. The argument is that independent, standalone suppliers, ones that only make foundations and do not also sell racking or develop projects, avoid that conflict and can offer more consistent pricing and delivery. Domestic manufacturers are also flagged as having an edge, since parts made in the US are easier to trace and document, which matters for certain federal tax credit rules tied to using domestic content. None of this changes what a homeowner pays or qualifies for directly. It is a look at how the solar industry's supply chain is shifting, which mostly affects contractors and installers deciding who to buy equipment from, not homeowners shopping for rebates or planning their own rooftop system.
AMD, NVIDIA raise bar on AI energy efficiency
Two of the biggest makers of computer chips for artificial intelligence, AMD and NVIDIA, are promising big cuts in the electricity their data center hardware uses. AMD says that by 2030, it will take just two of its server racks to do work that needed 570 racks in 2024 — a 20-fold drop in electricity use and a 28-fold drop in carbon intensity. The company says it's already made a fourfold efficiency gain between 2024 and 2026. NVIDIA says its newest chip generation, Vera Rubin, is 10 times more energy efficient than its previous one, and it aims to cut emissions per unit of computing power by 75 percent by 2030. This is industry and investor news, not something that changes anything about your own home or utility bill directly. But it matters for the bigger picture: AI data centers are a major driver of rising electricity demand nationwide, including new natural gas plants built to power them, which affects overall grid strain and costs. More efficient chips could slow that growth in demand somewhat. Some analysts and investors caution that efficiency gains don't automatically mean lower total emissions, since companies could still build and sell far more chips overall. Both AMD and NVIDIA have separate, smaller-scale pledges to cut their own direct emissions and those from purchased electricity by half by 2030, with AMD further along on that goal than NVIDIA so far.
Lectric Labor Day e-bike sale offers up to $694 savings + price cuts, EcoFlow 4,096Wh power station $2,549 in flash sale, more
This roundup covers a batch of retail deals on electric outdoor gear and backup power equipment, not home energy upgrades in the usual sense, but some items may interest homeowners looking at electrification or backup power options. Lectric's Labor Day sale includes e-bike bundles with savings up to $694, with prices starting at $799, plus price cuts on the XPeak2 and XPedition2 models. EcoFlow has a 4-day flash sale on its site with its 4,096Wh DELTA Pro 3 portable power station (a battery system that can store electricity for backup use during outages) down to $2,549, with other items starting at $799. For anyone thinking about backup power for their house, a station like this stores a large amount of energy that can run appliances or charge devices when the grid goes down. Other deals include EGO's 16-inch Carbon Fiber cordless electric string trimmer with Line IQ and POWERLOAD features, now at a 2026 low of $251, and a meross two-zone Wi-Fi smart water timer (for automating outdoor irrigation) at a new low of $76. There's also a HydroComm smart pool monitor from Aiper and solar-powered garden lights from Nanoleaf. A leftover deal from earlier in the week remains available too: Heybike's Hero mid-drive carbon-fiber all-terrain e-bike, discounted by $2,049.50 to a new low of $1,049.50. None of these are tied to rebate programs or energy-efficiency incentives — they're standard retail discounts on electric yard tools, e-bikes, and portable power equipment that might still be useful for anyone managing home energy use or backup power needs.
Hyundai and Genesis EV drivers can now score a 20% discount on IONNA charging
If you drive a Hyundai or Genesis EV, you can now save 20% on charging at IONNA stations. Hyundai is offering a 10% discount on all IONNA charging sessions, and IONNA is automatically adding another 10% on top of that. The discount applies automatically if you use Hyundai's in-app charging or Plug & Charge feature through the MyHyundai with Bluelink app. The extra 10% bonus from IONNA runs through September 30. Eligible vehicles include the Hyundai IONIQ 5 (model year 2022 and newer), IONIQ 5 N (2025 and newer), IONIQ 9 (2026 and newer), and Kona Electric (2025 and newer), along with the Genesis GV60 and Electrified GV70 (both 2026 and newer). Your car needs to support in-app charging or Plug & Charge to get the discount — Hyundai says more models will gain this capability over time, which should open the discount up to more drivers down the road. For homeowners who charge mostly at home, this mainly matters for road trips or times when your home charger isn't an option. If you own one of these EVs, checking whether your app is set up for in-app charging or Plug & Charge could mean a meaningful discount at public fast chargers over the next several weeks. Beyond that window, it's worth keeping an eye on whether Hyundai extends the offer or expands it to more models.
Hyundai starts taking orders for $17,700 Ioniq V, but you can’t have it
This is car news, not home energy news, but here's what happened. Hyundai has started taking pre-orders in China for a new electric vehicle called the Ioniq V, with prices starting around $17,700. It's an electric hatchback built on Hyundai's E-GMP platform, the same underlying technology used in the Ioniq 5 sold in the US, and it supports 800V fast charging, a system known for quick charging times. Depending on trim, it comes with a 53.5 or 66.8 kWh battery and a Chinese-standard range estimate of roughly 330 to 390 miles (that rating system tends to run more generous than the EPA numbers used in the US, so real-world range here would likely be lower). The car is only available to order in China right now, as part of Hyundai's broader push of 20 planned models for the Chinese EV market. Hyundai has said it eventually wants to sell the Ioniq V elsewhere, but has given no timeline. It may show up in markets like Australia, where Hyundai already sells EVs, but current US trade policy on Chinese-linked vehicles makes it unlikely to arrive here anytime soon. For homeowners thinking about home charging or solar setups, there's nothing to act on yet. This is a vehicle announcement out of China with no US release plans, so it doesn't change what's available to install or buy for your home right now.
The Yewt & Minivan Roadshow
This is a story about a small Australian company, not a home upgrade program, but it may interest homeowners weighing electric vehicles alongside other energy upgrades. ACE EV, an Australian manufacturer, has built prototype electric minivans and small trucks (called "yewts") and is touring them through eastern Australia, with stops between Brisbane and Melbourne, to drum up interest and test drives. The vehicles are aimed mainly at businesses doing short urban deliveries, but the company's founder hopes strong sales could eventually support local manufacturing. The minivan runs on CATL lithium iron phosphate (LFP) batteries, a battery type known for durability and safety, giving about 230 km of range per charge and a 30-minute fast-charge time. It carries up to 400 kg, has sliding doors on both sides, and has passed European, Japanese, and Australian crash-safety certification. The company estimates running costs 60-70% lower than a comparable diesel vehicle, saving an estimated $55-75 Australian dollars a week per vehicle. For homeowners, this isn't a rebate or upgrade program, just a look at a small local EV maker trying to get off the ground after years of funding struggles, including a past $5 million federal grant and over $7.6 million in vehicle reservations. If you're curious about electric vans or trucks for a home business or hobby use, it's a company worth watching, though it's not yet in mass production.
Toyota Is Still Working On That Futuristic Fluoride-Ion EV Battery
Toyota is still developing a next-generation EV battery that uses fluoride instead of the lithium in today's electric car batteries. The company first mentioned this research back in 2020, working with Kyoto University on a solid-state design (a battery type that skips the liquid material inside conventional batteries, often improving safety and performance). The promise is a battery with several times the energy storage of current lithium-ion packs, meaning more range and power. Now Toyota is teaming up with Johns Hopkins University to use AI to speed up the trial-and-error lab work, cutting testing time per experiment from about 10 minutes to 3-4 minutes. Even with that help, researchers say this kind of battery chemistry breakthrough typically takes years to go from lab to showroom, so there's no timeline for when, or if, this technology would show up in a car you could buy. For now, Toyota is sticking with today's battery technology for the EVs actually reaching driveways. The company recently launched an all-electric C-HR alongside its bZ model, and it's expanding U.S. production with battery maker LG Energy Solution, which just started making battery cells at a new Michigan plant for vehicles including the upcoming 2027 Toyota Highlander EV, to be assembled in Kentucky. None of this changes anything for homeowners considering rooftop solar, battery backup, or other home energy upgrades right now. It's simply a look at where EV battery technology may be headed down the road, alongside Toyota's more immediate plans to keep selling electric vehicles built with current technology.
Waymo Fully Launches Robotaxi Service in Houston
This one isn't really about home energy upgrades, but here's what happened: Waymo, the self-driving car company, has opened its robotaxi service in Houston, Texas to anyone who wants to use it. Before this, only people on an interest list could hail rides, starting about six months ago. Now anybody with the Waymo app can request a ride in the city. Waymo says more than 100,000 riders in Houston used the service during that earlier, limited phase. The company also mentioned that it carried many of the more than 1 million visitors who came to Houston for the World Cup, taking them to and from games and around the city. For homeowners, this doesn't connect to insulation, heat pumps, or rebate programs. It's a transportation and technology story about a driverless ride-hailing service expanding in one city. If you live in Houston, it means you can now open the Waymo app and book a robotaxi like you would any other ride-share, rather than waiting for an invitation. If you live elsewhere, the news mainly signals that Waymo continues to roll out full public access city by city, with Houston being the latest to move from limited to open service.
Waymo — “A look under our trunk: what’s in our compute”
Waymo, the self-driving car company, shared new details about the computer hardware that runs its vehicles. The system has to process camera, radar, and lidar (laser-based distance sensing) data in real time, make driving decisions in milliseconds, and keep working without a human backup. Waymo says it has scaled up the raw processing power of this system 20 times over the past eight years, drawing on more than 200 million miles of fully autonomous driving. The centerpiece is a custom chip Waymo built specifically for this job, which the company says delivers over 1,000 TOPS (a measure of computing speed) dedicated to reading raw sensor data and feeding it to the car's decision-making software. The hardware is also built to handle vibration, shock, and temperature swings, from cold Midwest winters to Phoenix heat, and has a backup system: two computing units that normally split the work but can each take over the whole job if the other fails. Waymo partners with chipmakers including AMD, Nvidia, Samsung, and TSMC to build these systems. This is a look at the technology behind Waymo's robotaxi service, not a product or upgrade for personal vehicles. It doesn't touch home energy use, heating and cooling systems, or rebate programs, and has no direct bearing on decisions about upgrading your own house.
Tesla recalls nearly 3 million cars in China over door escape risk
Tesla is recalling nearly 3 million vehicles in China after regulators found the manual door release inside the car — the backup handle used to get out if the car loses power in a crash — was too hard to find or use. The problem isn't the flush outer handles Tesla is known for, but the interior emergency release, which blends in with the surrounding trim and can be hard to spot in an emergency. The recall covers Model 3, Model Y, Model S, and Model X vehicles built or sold in China, and takes effect September 25, 2026. Rather than changing the physical door hardware, Tesla plans to add warning labels and send an over-the-air software update that changes how windows lower to help people escape. Eight other automakers, including Xiaomi, Xpeng, and Geely, filed similar recalls the same day for the same issue, making this one of China's broadest safety actions on hidden door mechanisms, though Tesla's recall is by far the largest. This isn't just a China issue. In the US, Tesla faces wrongful-death lawsuits over door handles trapping people after crashes, and federal safety regulators have opened new rulemaking on the door release design after denying an earlier petition. Members of Congress have also introduced a bill specifically targeting the handles. If you own one of the affected Tesla models, this recall as filed applies to vehicles in China — but the underlying design concern is part of a wider review playing out in the US as well.
Tesla (TSLA) recalls over 2 million cars in China to add driver monitoring
This news is about Tesla, not home energy upgrades, so it has no real bearing on planning insulation, heat pumps, or rebates for your house. Still, here's what happened: Tesla is recalling more than 2.7 million Model 3 and Model Y cars in China, built between March 2019 and December 2025, to fix how the cars watch whether the driver is paying attention while using its assisted-driving system (Autosteer). Chinese regulators found that Tesla's old method — sensing a hand's grip on the steering wheel — wasn't enough to prove someone was actually looking at the road. The fix is a free over-the-air software update, so no one needs to bring a car into a shop. It adds cabin-camera tracking of the driver's eyes on top of the existing steering-wheel check. Tesla had already been using a camera for this in China, but drivers found they could trick it with cheap plastic doll heads propped near the mirror. This recall extends the stricter camera monitoring across all cars using the system. This mirrors a similar move the U.S. required back in 2023, when regulators forced Tesla to add stronger driver-attention checks after a recall covering about 2 million American vehicles. Tesla also filed a separate, larger recall in China the same day for an emergency door release that's hard to find after a crash, covering nearly 3 million more cars. None of this involves home electricity use, solar, or EV charging costs.
One Big, Beautiful Bill Act, One Year Later: Tax Wins, Incentive Losses
A federal tax credit that helped homeowners pay for high-efficiency heating and cooling equipment is gone. The One Big, Beautiful Bill Act, signed into law about a year ago, eliminated the Section 25C Energy Efficient Home Improvement Credit, which had offered up to $2,000 back for installing a qualifying heat pump, and up to $600 each for a high-efficiency furnace or air conditioner. Also eliminated: the Section 25D credit that covered geothermal systems and solar power, and a separate credit for builders of energy-efficient new homes. More than 2.3 million households claimed the 25C credit in 2023, the last year with full data, including nearly 268,000 for heat pumps specifically. Despite losing the credit, heat pump sales haven't dropped. Industry shipment data for the first half of this year actually shows heat pump shipments up 3.8% compared to the same period last year, when the credit still applied. Furnace shipments were down slightly, air conditioner shipments up a bit. So if you're weighing a heat pump or other upgrade now, know that the federal tax credit that used to sweeten the deal no longer exists — you'll want to check whether your state or utility still offers its own rebates, since those vary and weren't affected by this law. The bill did expand some workforce-training programs, including letting 529 education savings accounts and Pell Grants cover trade-school training for HVAC technicians, which could affect the pipeline of installers available in coming years, but that's not something that changes your options at home today.
Duke Energy deals double whammy to its poorest North Carolina customers
Duke Energy customers in North Carolina are facing two changes at once. The company has proposed raising residential rates by about 9.5% over two years, which would add roughly $10 a month to the average bill starting in January. At the same time, a separate program that has given low-income households a $42 monthly bill credit is set to expire December 31, with no replacement announced. That credit, called the Customer Assistance Program, has automatically gone to about 80,000 households enrolled in one of two federal aid programs: the Low-Income Energy Assistance Program or the Crisis Intervention Program, both for households earning at or below 150% of the federal poverty level (about $50,000 for a family of four). Recipients also got referrals to free weatherization help, such as insulation, air sealing (closing gaps around windows, doors, and other leaks), and equipment upgrades, which can cut bills by half or more. Duke has not asked state regulators to make the credit permanent, and a spokesperson said any decision rests with the North Carolina Utilities Commission. Separately, Duke shareholders have agreed to put $20 million toward bill help and home repairs like roofing, but that money is not tied to the expiring credit program. If you get help through LIEAP or the Crisis Intervention Program in North Carolina, this is worth watching, since your monthly credit could disappear right as rates go up. It may be worth checking with your state or local energy assistance office about what support will still be available after December.
US apartment buildings have tipped toward heat pumps
Heat pumps have become the standard choice in new U.S. housing. In 2025, 53% of newly built apartment buildings included heat pumps, up from 46% the year before. Heat pumps are electric units that both heat and cool a home, running on the same technology as an air conditioner but able to reverse and warm a space too. New houses are close behind, with 48% built with heat pumps last year. Overall, most new homes built in 2025 had some form of electric heating, either heat pumps or less-efficient electric-resistance systems: 78% of new apartment units and 56% of new houses. Builders point to a few reasons for the shift. Heat pump technology has improved, and demand for air conditioning has grown as heat waves become more common. Heat pumps cost more upfront than a gas furnace alone, but can compete on price with a furnace-plus-AC setup. Skipping gas hookups also saves builders money on infrastructure, since electric-only construction avoids the cost of running gas lines. A federal tax credit that gave developers up to $5,000 per efficient housing unit likely helped too, though it expired last month. Where you live still matters. States like California, Colorado, and Washington have building codes that push new construction toward all-electric heating, while other states have no such rules. Even without those mandates, though, builders in many regions are choosing heat pumps anyway, so the technology is spreading even in places without policies requiring it.
OBBBA’s HVAC Scorecard: Tax Wins, Incentive Losses
A federal law passed last year, the One Big, Beautiful Bill Act, ended several tax breaks that had helped homeowners pay for efficient heating and cooling equipment. The biggest loss for homeowners is the Section 25C credit, which had offered up to $2,000 back for installing a qualified heat pump, and up to $600 each for a high-efficiency furnace or air conditioner. Also gone is the Section 25D credit, which covered geothermal systems and solar power, and a credit builders used for constructing energy-efficient new homes. More than 2.3 million households claimed the 25C credit in 2023, including nearly 268,000 for heat pumps specifically, according to the U.S. Treasury. Industry groups call the loss of these credits a real setback, especially combined with rising equipment prices. Still, shipment data so far doesn't show a clear drop-off: residential heat pump shipments were actually up 3.8% in the first half of this year compared with the same period last year, when the credit still existed. Furnace shipments were down 6.2%, and air conditioner shipments were up 2.4%, though these figures don't separate out equipment that would have qualified for the credit. The law's other major changes mostly affect HVAC businesses and worker training rather than homeowners directly, including permanent tax deductions for contractors and new ways to fund trade-school education. If you were counting on a federal tax credit to offset the cost of a heat pump or similar upgrade, that credit is no longer available, so it's worth checking whether your state offers its own rebate or incentive instead.
Were the exterior top plates sealed?
A homeowner posted photos and questions after a roof replacement uncovered work from a past insulation job. They're trying to figure out whether the contractor actually did what the contract called for, specifically around sealing the top plates — the wood framing at the top of exterior walls where they meet the attic. Gaps here are a common spot for warm indoor air to leak into the attic, so sealing them matters for both energy bills and preventing moisture problems in the roof. The homeowner also raised a separate concern: in several spots, blown-in loose insulation had spread all the way out to the soffits, the vents under the roof eaves that bring in fresh air. Normally a baffle — a piece of rigid foam or batt insulation — gets installed to keep blown insulation from blocking soffit vents, since blocked vents can trap moisture and heat in the attic. The post asks whether this was simply a poorly done job. This is a homeowner's question to a building-science forum, not a resolved case, so there's no verdict yet on whether the original work was done correctly. But the underlying issue is one worth knowing about if your own attic has ever had insulation blown in: air sealing at the top plates and keeping soffit vents clear are both basic parts of a proper insulation job. If you've had similar work done, it's a fair thing to check next time you're in the attic or having roof work done, since both problems can quietly cost you in heating and cooling bills or attic condensation down the road.
Quiet Comfort: Are Homeowners Raising the Bar for Residential HVAC?
Homeowners are pushing heating and cooling makers to focus on quiet operation, not just efficiency. Manufacturers say buyers now bring up noise unprompted, asking whether an outdoor unit will disturb time on the patio or bother neighbors on smaller lots. More people working from home has made indoor quiet matter more too. The good news is that quiet and efficient no longer have to be a tradeoff. Variable-speed compressors and fans adjust output to match demand instead of switching on and off at full blast, which cuts both energy use and noise. Better fan design, cabinet materials, and smart controls have also lowered sound levels. For gas boilers, the remaining balancing act involves venting: narrower or more restrictive vent pipes can raise noise, so how the venting is routed and sized matters. Heat pumps can also sound different, not necessarily louder, when compressors ramp up during high demand, which can surprise people used to older single- or two-stage systems. Installation quality matters as much as the equipment itself. Correct sizing, refrigerant charge, ductwork, and placement of the outdoor unit all affect how loud a system actually sounds in daily use, and older homes with undersized ducts can turn even quiet equipment noisy. Placement close to a bedroom window or deck can undercut an otherwise quiet system, so options like moving the unit, adjusting refrigerant lines, or adding screening can help. As efficiency standards tighten, quieter variable-speed systems are expected to become the standard rather than a premium option.
California Solar Power Bills Move Forward to Support Balcony Solar, Community Solar, and VPPs
California lawmakers are moving forward with several bills that could open up new, smaller-scale ways to get solar power at home. One bill, SB 868, would clear the way for "plug-in" or "balcony" solar — small systems up to 1,200 watts that plug into a regular household outlet instead of going through the usual utility approval process and local permits. That could make small solar setups far simpler for renters or homeowners who don't want a full rooftop installation. A second bill, AB 1813, targets community solar, which lets people buy into a shared solar project rather than install panels on their own roof. It would direct state regulators to use a specific pricing method (the Public Utilities Commission's Avoided Cost Calculator) to value community solar and battery storage, aiming to revive a part of the market that has stalled in California. A third pair of bills, SB 913 and a related proposal, deal with virtual power plants — networks of home batteries that send power back to the grid when demand is high. SB 913 would require regulators to set rules for valuing those exports, and a companion proposal would let batteries at people's homes qualify for grid reliability payments based on how much power they can send out, not just how much they save on-site. All of these bills are still working through the California legislature and are not yet law. If they pass, they could give homeowners more options for small-scale solar and battery setups, and possibly some help with California's high electricity costs, though it's too early to know the exact impact on any individual bill.
Report alleges U.S. solar recycling is mostly landfilling, offshoring in disguise
A new report raises questions about what actually happens to old solar panels once they're taken out of service in the U.S. According to the research firm behind it, about 90% of retired panels are sent straight to landfills, mostly because dumping them is cheaper than recycling. Of the small share that do go to recyclers, the report claims much of the material is shredded and shipped overseas, mainly to a South Korea-based company's smelting plant, rather than being fully processed into reusable material here at home. The report calls this pattern "camouflaging" — disposal dressed up as recycling. The report names one company, Nevada-based Comstock Metals, as the only U.S. facility it found that meets its standard for certified, zero-landfill domestic processing, and also credits First Solar's in-house recycling program for its own panels. One of the companies named, Solarcycle, pushed back, saying it diverts 100% of panel material from landfills and recovers high value from it, though it does send a portion abroad for final refining because no large-scale refineries exist in the U.S. yet. It noted that the Korean company in question plans to open a refinery in Tennessee by 2029. For homeowners, this isn't an immediate action item — it doesn't affect existing rebates or incentives for installing solar. But it's worth knowing as background: if you have panels now or are considering them, what happens to them decades from now, when they're replaced or retired, is still an unsettled part of the industry, with real differences in how "recycled" panels are actually handled.
What Is the Best Basement Insulation Strategy for an Older Home?
A homeowner with an older house recently asked a building science forum for advice on insulating a basement with concrete foundation walls. The question raised the usual concerns with basement work: how to control moisture and condensation, which material to use — rigid foam board, spray foam, or insulated framing — and whether insulation should sit directly against the foundation wall or leave an air gap behind it. At the time this was posted, no answers had been given yet, so there's no expert guidance to pass along here. Basements are one of the trickier parts of a house to insulate well, because concrete walls hold moisture and can sweat when warm, humid air meets a cold surface. Getting the approach wrong can trap moisture inside wall cavities and lead to mold or rot rather than the comfort and efficiency gains you're after. If your own basement is on your upgrade list, it's worth knowing that the choice of material and installation method — foam board versus spray foam, sealed against the wall versus with a gap — genuinely changes the moisture risk, not just the R-value. This is a case where it pays to get a second opinion from someone familiar with your specific foundation and climate before buying materials, since the "best" approach depends on details like wall condition and local humidity that a general guide can't cover. Check back on this discussion if you want to see what specific recommendations emerge.
Proposed $67 billion utility merger sparks concern about rooftop solar access, bill affordability
Dominion Energy, Virginia's largest utility, has proposed a $67 billion merger with Florida-based NextEra Energy that would create the largest regulated electric power company in the country. The deal, submitted to the Virginia State Corporation Commission on July 15, is raising questions about what might happen to rooftop solar rules in Virginia if it goes through. The concern centers on net metering, the policy that lets homeowners with solar panels get credit on their bills for extra power they send back to the grid. Virginia's 2020 Clean Economy Act currently guarantees full retail-rate net metering. NextEra's Florida utility, Florida Power & Light, has a history of backing changes that would reduce those credits and raise fees for connecting home solar systems to the grid — moves that were blocked by Florida's governor in 2022. Solar industry groups worry NextEra could bring similar positions to Virginia after the merger. Florida Power & Light also requires commercial liability insurance on some home solar systems, another rule advocates don't want to see spread north. Dominion has said the merger won't change Virginia's clean energy commitments, and its president told regulators the company remains committed to the Clean Economy Act. Virginia Governor Abigail Spanberger has filed to formally intervene in the case. The SCC's review could take up to 180 days, and the deal still needs sign-off from shareholders, regulators in North and South Carolina, and two federal agencies. The companies expect to close the deal in late 2027. For now, Virginia's net metering rules haven't changed, but the merger is one to watch if you have solar panels or are considering them.
Why Simplicity in Boilers Starts with Smarter Circulators
If you have a boiler heating system, the pump that circulates hot water through your pipes matters as much as the boiler itself. Industry experts note that even an efficient, modern boiler can underperform if that pump, called a circulator, is the wrong size for the system. An oversized circulator can force the boiler to cycle on and off too often, wearing out parts sooner than expected. Newer "smart pumps" adjust their speed automatically based on how much heating your system needs at a given moment, which can cut energy use compared to older fixed-speed pumps, especially in homes with multiple heating zones. But these pumps still need to be set up correctly for your specific system to actually deliver those savings. One type, called a Delta-T circulator, is described as especially reliable because it adjusts itself in real time to match what the system needs, helping avoid the common problem of an oversized pump. There's no action required on your part here, but if you're ever replacing a boiler or having heating work done, it's worth knowing that the circulator pump is not just a minor add-on. Newer features like app-based programming and automatic software updates are making it easier to keep these pumps properly tuned over time, which can affect both your heating bills and how long your equipment lasts.
Silfab furloughs workers at SC solar panel plant
Silfab Solar has furloughed workers at its solar panel plant in Fort Mill, South Carolina, citing a shortage of certain materials needed for production. The company had already paused production earlier this month for the same reason, though workers stayed on to handle maintenance and other tasks during that pause. Silfab expects this furlough to last three to four weeks. It has not said how many workers are affected. This follows a similar move by Heliene, another solar panel maker, which laid off nearly 100 workers at its Minnesota plant earlier this month due to what it called unforeseen business circumstances. Both companies are Canadian-headquartered but manufacture panels in the United States. The disruptions come as the U.S. solar industry deals with new tariff investigations and supply chain problems. Ongoing government investigations into whether certain countries are dumping cheap solar cells into the U.S. market are causing the supply of those cells to fluctuate, and newly announced tariffs on polysilicon, a raw material used in solar panels, are expected to raise prices on panels made domestically. For homeowners considering solar panels, this is worth watching rather than acting on right away. It does not change any rebate or incentive program, but it points to a period of price uncertainty and possible supply delays for U.S.-made panels as manufacturers work through material shortages and new tariffs.
5 Ways To Overcome AI Hesitancy in HVAC
This is trade-press news about HVAC contractors adopting artificial intelligence (AI) tools in their businesses, not a direct action item for homeowners. Surveys cited in the piece show mixed feelings about AI generally, and among small business owners, 76% are already using it, though only 14% have fully built it into their operations. For HVAC companies specifically, the AI tools fall into two camps. Some help technicians in the field, like Copeland's free app, which uses an AI feature called Scout to help diagnose problems and find parts. Others act more like office assistants, handling phone calls, scheduling, quotes, follow-up messages, and paperwork. Products mentioned include Podium's "Larry," GoodLeap's "DeDe," and a system from Canals that automates invoicing and accounting. Experts quoted say contractors should introduce these tools gradually, train them on how the business operates, and keep employees and customer relationships central rather than letting AI replace them entirely. If you're a homeowner, this doesn't change anything about your house or your options for upgrades or rebates. But it does mean that when you call a contractor for a quote or a repair, you may increasingly be talking to an AI system for scheduling or an after-hours call, or the contractor may be using AI in the background to handle estimates and follow-up. The technology itself doesn't affect the equipment installed in your home or its cost.
A Driller and HVAC Professional Have a Cup of Coffee
This is a trade-industry piece, not a homeowner program update, but it does touch on something worth knowing if you're weighing a geothermal system: these systems use pipes buried in the ground (often 600 feet deep) to heat and cool your house, and installing them takes real coordination between two different businesses — a well driller who handles the digging, and an HVAC contractor who handles the indoor equipment. The article describes those two trades starting to team up more formally, sharing schedules and referring customers to each other, rather than working as strangers hired separately for the same job. The practical upshot for a homeowner: geothermal isn't a same-day fix like a furnace swap. Drilling the underground loop can take weeks to schedule, so if your furnace or air conditioner fails suddenly, you may end up with a temporary heater or air handler while you wait for the drilling crew, then a permanent geothermal hookup once the loop is in. Contractors who've paired up with a driller in advance can give you a firmer installation date instead of leaving you guessing. The piece also notes that federal tax incentives for geothermal are still in place for now, which it says is helping drive demand. It doesn't give specific dollar amounts or deadlines, so if you're considering geothermal, it's worth checking current federal and state incentive details directly rather than relying on this general mention.
Translucent Solar Starts Producing Solar Panels in South Carolina
A new solar panel factory has started making panels in Summerville, South Carolina. The plant belongs to Translucent Solar and is part of a broader push, backed by federal incentives and tariffs on imported panels, to build more solar equipment inside the US. By the end of 2026, the factory is expected to reach its full production capacity of 1.2 gigawatts a year. The panels coming out of this plant are meant for a mix of uses: large utility-scale solar farms, commercial installations, and residential systems. So some of what rolls off this line could eventually end up on homes. The company describes this South Carolina plant as a $15.6 million first-phase investment, and its managing director says it plans to expand further into US manufacturing, including making the solar cells and wafers that go into panels, not just assembling them. For homeowners, this doesn't change anything immediately. No new rebate, price break, or program is tied to this factory opening. It does add to the supply of American-made solar panels, which matters if incentives or rules in your state give any preference to domestic manufacturing when you install rooftop solar. If you're weighing a home solar project, it's still worth checking what panel-sourcing rules, if any, apply to rebates or tax credits where you live, since those details vary by state and program.
Trane, American Standard Get Smarter With New T-Stats
Trane and American Standard have released new smart thermostats, the Trane Priority Smart Thermostat and the American Standard Gold Smart Thermostat. Both work with almost any heating and cooling system that uses standard 24-volt controls, which covers most home HVAC setups. They connect to the Trane Home app and to Google Home or Amazon Alexa, so you can check and adjust your system's settings from a phone or by voice, and both are Energy Star certified, meaning they meet federal efficiency standards. An optional add-on sensor, sold separately, tracks temperature and humidity in different parts of the house, which can help even out hot or cold spots and manage indoor humidity. The thermostats also have a touchscreen display with color-coded status lights showing how the system is running. On the service side, the thermostats collect data contractors can use to spot problems early and diagnose issues remotely, which the companies say could mean fewer in-person repair visits. For a homeowner, that mainly means a smart thermostat that installs on more types of existing systems, gives more detailed feedback on how your heating and cooling is performing, and may catch developing problems before they become a bigger repair. No price or release date was given, so anyone interested in one would need to check with a local dealer for availability and cost.
Duke’s Carolinas resource plan targets 18.5 GW new solar by 2041
Duke Energy has filed a 15-year plan with South Carolina regulators that lays out how it wants to add power supply across North Carolina and South Carolina through 2041. The plan calls for 18.5 gigawatts of new solar, 14 gigawatts of new gas-fired generation, 13 gigawatts of battery storage, and about 4.5 gigawatts of new nuclear power. Duke says both states are among the fastest-growing in the country, and it expects winter peak electricity demand to rise by more than 10 gigawatts, roughly 30 percent growth. For homeowners in Duke's Carolinas territory, this is mostly a long-range planning document rather than something that changes your bills or service right away. It signals where your electricity will come from in coming years: more solar and battery storage on the grid, along with new natural gas plants and possibly longer-running nuclear reactors, since Duke is working to extend some of its existing nuclear plants to operate up to 80 years. The company also says it will keep pushing "grid edge" programs — things like energy efficiency, demand response, and programs that shift or reduce household electricity use at peak times — as tools to manage growing demand. South Carolina's Public Service Commission is expected to hold a hearing on the plan in April, with a decision by June. Homeowners with rooftop solar, battery storage, or interest in efficiency programs may see more detail on how these fit into Duke's future plans once that review process plays out.
Can AI revolutionize grid operations?
This is a look at how utilities plan and run the electric grid, and how artificial intelligence might change that work behind the scenes. Josh Wong, founder of ThinkLabs AI, explains that utility planning today relies on slow, manual studies that check for worst-case scenarios, like the hottest day of the year, and often take months to run. When problems turn up, the fix is usually more wires and equipment, since planners rarely have tools that suggest cheaper alternatives like batteries or shifting demand. Wong's company builds AI trained on the physics of the grid rather than general-purpose chatbots, aiming to cut study times from months to minutes and suggest actual fixes, not just flag problems. He argues this same approach could help grid operators too, by learning from daily events, catching patterns in alarms, and connecting long-term planning decisions to real-time operations, which today barely talk to each other. The conversation also touches on data centers building their own gas generators and batteries to get power faster instead of waiting on grid connections. Wong is skeptical this is the best path: he believes the grid already has enough spare capacity for most data centers if utilities planned and operated it better, and he suggests large data centers should be treated less like private backup systems and more like their own small utilities with responsibilities to the surrounding grid. For homeowners, none of this changes anything immediately. It is a preview of technology utilities may adopt to plan and manage the grid more efficiently, which over time could affect reliability and how new demand, like data centers, gets connected.
Home interior air/vapor barrier selection
This is a homeowner's question, not news, so there's no policy or program update here. It's one person asking for advice on their own build, but the details are worth knowing if you're renovating or finishing a similar structure. The homeowner bought a post-frame (pole barn style) home in West Virginia that was already framed and enclosed but never finished inside. They're insulating the walls with rockwool (a mineral-wool insulation) to around R-29, and want to add a barrier on the inside face of the wall that stops air leaks but still lets some moisture dry toward the interior, since the metal siding outside blocks drying to the outdoors. They're weighing a few "smart" vapor barrier products, membranes that adjust how much moisture they let through depending on humidity, rather than a plain plastic sheet. They also have a vaulted, vented attic ceiling finished in tongue-and-groove pine, which is a wood plank ceiling with visible gaps that can leak air. They want to know if the same type of smart membrane can go behind that pine to block air movement without adding a layer of drywall or plywood first. For a homeowner, the takeaway is general: when metal siding or roofing blocks outward drying, the choice of interior air and vapor barrier matters more, and matching the material to your climate zone and wall assembly is worth getting right before drywall goes up.
How Can Condensation Occur at Higher Air Temperature?
Most people know condensation as something that happens when air cools down, like dew forming on grass overnight or moisture on a cold window. That's because water vapor turns to liquid at a certain temperature, called the dew point, and cooling air below that point causes condensation. But condensation can also happen when air gets warmer, and the explanation comes down to pressure. Just as water boils at a lower temperature at high elevation (where air pressure is lower) and cooks faster in a pressure cooker (where pressure is higher), the dew point temperature also shifts with pressure. Raise the pressure high enough, and water vapor will condense even at a higher temperature. This is why air compressors, which pack air to five or ten times normal atmospheric pressure, collect water in their tanks after use, even on a warm day. The moisture didn't come from a temperature drop, it came from the pressure increase. This is mostly a curiosity rather than something that affects your house directly, since the pressure swings from weather changes are far too small to trigger this effect. Normal home condensation problems, like moisture on windows, in attics, or inside walls, still follow the familiar rule: they happen when moist air meets a surface at or below its dew point, not because of pressure changes inside your home.
How Can Condensation Occur at Higher Air Temperature?
Condensation usually happens when moist air cools down and hits its dew point — the temperature at which water vapor turns back into liquid, like dew forming on grass overnight. But condensation can also happen when air gets warmer, and the reason has to do with pressure, not just temperature. At normal atmospheric pressure, water boils at 212°F and condenses at whatever the dew point happens to be for that air. Change the pressure, and both of those numbers shift. Lower pressure (like at high elevation) lowers the boiling point, which is why water boils faster but cooler in the mountains. Higher pressure raises it, which is why food cooks faster in a pressure cooker. The same rule applies to dew point: raise the pressure enough, and water vapor condenses at a higher temperature than it normally would. That's what happens inside an air compressor tank, where pressure runs five to ten times higher than normal. Even on a warm day, water collects inside the tank and needs to be drained out. This isn't something that affects your house directly — everyday weather changes barometric pressure only slightly, nowhere near enough to change condensation behavior. But it's a reminder that condensation problems in your home (foggy windows, damp basement walls, musty attics) are almost always about temperature drops meeting moist air, not pressure. The compressor is just a case where the usual rule runs in reverse.
A Vacation Farmhouse In Vermont Inspires A Renewable Energy Travelogue
A writer staying at a Vermont farmhouse this summer found the property largely run on electricity, offering a real-world look at what a home energy upgrade can look like. The house uses solar water heaters, which use rooftop collectors to warm water using the sun's heat rather than pulling power from the grid. A barn roof holds 16 solar panels installed back in 2014, which have produced about 50,000 kWh over their first decade. That works out to roughly half of what an average US home uses in electricity annually, based on 2022 federal data, so the panels cover a solid share of the farm's needs without covering everything. The property also has an EV charger, letting guests plug in overnight the way they would at home. The farmhouse isn't fully off fossil fuels, though. Mowing the fields still relies on diesel equipment, and the house keeps a propane hookup and baseboard heaters as backup alongside two wood stoves. Vermont's Department of Environmental Conservation has funding of $5,909,575 available to help replace diesel-powered vehicles and certain off-road equipment with electric alternatives, which could eventually help farms like this one electrify equipment such as mowers. The bigger point for homeowners: full electrification rarely happens all at once. This farm shows a gradual approach, layering in solar water heating, rooftop panels, and EV charging over years while keeping backup heat sources for reliability. It's a useful reminder that partial progress, made in stages, still adds up to real savings and lower emissions.
Florida district deploys 375 solar streetlights via infrastructure-as-a-service model
A public improvement district in Florida, Sun 'N Lake, has finished installing 375 solar-powered streetlights across its area. Instead of connecting to the regular power grid, each streetlight runs on its own solar panel and battery, which meant skipping the trenching and utility hookups that normally add cost and delay to lighting projects. The district paid for the system through a "lighting as a service" arrangement: a company called Sustainability Partners covered the upfront design, equipment, and installation costs, and the district now pays a monthly fee based on usage rather than taking on debt or raising taxes. This isn't a program homeowners can sign up for — it's public street lighting, not household equipment. But it points to a wider trend in solar lighting technology that's worth knowing about if you're curious where solar tech is headed. Newer standalone streetlight systems now pack a solar panel, a lithium iron phosphate battery (a stable, long-lasting battery chemistry), and LED lights into a single pole-mounted unit, with some models providing up to 15 hours of light and others adding small wind turbines or smart sensors. The appeal for a public agency is resilience: because these lights don't depend on the grid, they can keep working during outages or storms. For your own home, the takeaway is mostly informational — this shows solar-plus-battery lighting has matured enough that governments are choosing it over traditional grid-tied lighting for cost and reliability reasons, the same qualities that make solar-battery combinations appealing for a house.
Design a Supportive Space
This is a homeowner forum post, not yet answered, so there's no expert guidance to pass along. The person asking has a house in a cold climate (Zone 6) with a low-slope roof (3-in-12 pitch) and no soffit vents — the openings under the roof eaves that normally let outside air into the attic. They're weighing whether to add roof-mounted intake vents, such as an edge vent installed near the roof edge, as a substitute. Attic ventilation matters because it helps keep moisture from building up under the roof deck, which can lead to rot or mold over time, and it can also affect how hot an attic gets in summer. Homes without soffit vents sometimes need another way to bring in fresh air at the low point of the roof so it can flow up and out near the ridge. Whether an edge vent works well on a shallow, 3/12-pitch roof is the kind of detail that depends on the specific roof assembly, insulation, and local moisture conditions. If you have an older home with a low-pitch roof and no visible soffit vents, it's worth finding out how your attic is currently ventilated, if at all, since that affects both roof durability and comfort. There's no cost, program, or rebate tied to this question — it's simply a design detail worth understanding before making changes to your own attic or roof.
Community Solar 101 — How It Works
If your roof can't support solar panels — because you rent, have too much shade, or your roof is in poor shape — community solar offers another way to save on electricity. Instead of installing panels at home, you get credit on your utility bill for a share of the power produced by a solar array built elsewhere. These projects now exist in 43 states and Washington DC, with a combined 11 gigawatts of capacity. There are two main ways to join. With an ownership model, you pay upfront for panels or a share of the array and get billed credits based on how much energy your share produces, similar to buying a home system outright. With a subscription model, you pay nothing upfront and simply subscribe to buy solar power at a lower rate than your utility charges, which means immediate savings. Because subscriptions require no money down and no credit check or home ownership, they've become a common way for lower-income households to access solar savings. Projects can be run by a utility, a nonprofit, or a group of investors who form a business to develop the array, and each setup comes with its own rules about who can join and how much energy you can draw. Community solar is growing quickly because it reaches people who can't put panels on their own roof. If you're interested, check whether a project serves your area — availability and rules vary by state and by utility, so it's worth looking into what's actually offered where you live.
PJM wants data centers to bring their own power. Pennsylvania’s on it.
Pennsylvania Governor Josh Shapiro has signed an executive order aimed at making large data centers pay their own way on the power grid, rather than passing costs on to regular electricity customers. The order targets data centers over 25 megawatts and ties faster permitting to a set of requirements: these facilities must either line up their own power supply (from gas, batteries, solar, wind, or programs that pay households to cut energy use at peak times) or agree to be the first cut off during grid emergencies, ahead of homes and businesses. The move follows a similar proposal from PJM, the regional grid operator that manages electricity markets across 13 states including Pennsylvania. For homeowners, the significance is mostly about costs, not immediate changes to your utility bill. Data centers built to power the AI boom have been driving up wholesale electricity prices across the PJM region. Shapiro's order also directs state regulators to make sure data centers, not other customers, cover costs from a grid-reliability backstop auction PJM plans to hold this fall, and pay for any grid upgrades utilities make to serve them. The order also pushes data centers toward cleaner power, requiring those that sign on to source a rising share of their electricity from carbon-free sources, starting at 10 percent in 2027 and reaching 32 percent by 2035. Separate legislation, still stalled in the state Senate, would limit data centers' use of diesel generators as backup power.
NLR & North American Electric Reliability Corporation Launch Partnership To Advance North American Grid Reliability
A federal research lab, the National Laboratory of the Rockies, and the North American Electric Reliability Corporation (NERC), the group that sets and enforces reliability standards for the power grid, have announced a new partnership. The goal is to study how the electric grid is changing and find ways to keep power reliable and affordable for the more than 400 million people who depend on it across North America. The first phase of the work will combine NERC's detailed data on grid equipment and locations with the lab's grid-modeling tools, letting researchers build a more precise picture of the power system and study future reliability risks in greater depth. The two organizations say this could shape how utilities and planners approach grid reliability going forward, including newer analysis methods that weigh probability and risk rather than simple worst-case planning. This is a research and planning partnership, not a new program, incentive, or rule. It does not create any rebate, deadline, or requirement that affects your home directly. The practical relevance for homeowners is longer-term: work like this feeds into how utilities plan for grid reliability as more homes add things like heat pumps, electric vehicle chargers, and rooftop solar, all of which change demand on the system. For now, there is nothing to act on. It is worth watching only if you follow how the broader grid is preparing for the shift toward more electrified homes.
Electric Trucks In Play As New, Trump-Endorsed Lithium-Ion Battery Factory Takes Shape
A battery maker called Forge Nano is expanding its factory in Morrisville, North Carolina, with backing from a $100 million grant from the Trump administration's Department of Energy. The expanded site is meant to grow from 100,000 square feet to nearly 315,000 square feet, eventually producing up to 3 gigawatt-hours of lithium-ion battery cells a year, with production starting in 2028. Forge Nano itself is putting in $300 million to $330 million. This isn't really about home batteries or electric cars for regular buyers, though. The grant traces back to a 2024 Bipartisan Infrastructure Law program aimed at heavy-duty trucks, off-road equipment, aerospace, and defense uses, not passenger EVs. Most of the output is expected to go toward military applications like drone batteries, radio batteries, and electric military vehicles, timed to new Defense Department battery-sourcing rules starting in 2028. South Korea's Samsung SDI is also involved, supplying cells that will go into automotive uses on the commercial and industrial side, not consumer cars. For homeowners, the news mainly signals that battery manufacturing in the U.S. keeps growing even as other clean-energy programs face cuts under the current administration, since demand for batteries is being driven by data centers, industrial users, and now defense needs. It doesn't point to any new rebate, tax credit, or home battery product you could use right now, but it's a sign that domestic battery supply chains, which eventually feed into things like home energy storage, are still expanding.
Data Centers Consume 80-215% More Water When Power Generation Is Included
New research shows data centers use far more water than the cooling systems inside their buildings suggest. Once you count the water used to generate the electricity that powers them, total water use runs 80% to 215% higher than on-site cooling alone. A data center cooled directly uses water on site, but the power plant supplying its electricity also draws water, mostly for cooling steam-driven turbines at gas and nuclear plants. The type of power plant matters a lot. A typical natural gas plant adds about 80% more water use on top of what the data center itself consumes. Nuclear power plants use much more water for cooling, adding around 215% more. Wind and solar power need no cooling water at all, so a utility that relies more on renewables lowers the total water footprint of the data centers it serves. This matters most to homeowners living near where new data centers and power plants are being built, especially in the Southeast, where utilities are adding gas plants and considering new nuclear plants to meet rising demand. More water-intensive power generation in your area can mean more strain on local rivers and water supplies, even if you never see a data center yourself. Some newer gas plants use "dry" cooling that needs much less water, but most existing plants still rely on water-cooled systems, and any new nuclear plants are expected to as well.
How U.S. Boiler Company is Making High-Tech Heating Feel Like Home
U.S. Boiler Company has updated its residential boiler line to make setup and ongoing operation more automatic. The company's ALTA boilers use what it calls OneTouch technology: instead of a technician manually tuning combustion settings, the system commissions itself at the push of a button and continues adjusting its performance over time based on conditions like fuel quality and weather. For homes that need more heating capacity, U.S. Boiler now offers a shared venting system called OneVent, which lets multiple boilers run together and share the same self-adjusting controls. This is aimed at larger homes or small multi-unit buildings that need more output than a single residential boiler provides. The company also says switching a boiler between natural gas and propane is designed to be simpler than before, and its USB-Connect app — used for setup and troubleshooting — now works with these boiler systems over Bluetooth, so a technician doesn't need access to a home's Wi-Fi network to service the unit. The broader idea behind these changes is reliability: fewer sensors and manual adjustments mean fewer components that can fail down the line. If you have a boiler-based heating system, or are considering one for your home, these features suggest newer models may need less manual fine-tuning after installation and may be easier to service over time. The article doesn't include pricing or availability details for these features beyond the ALTA product line.
Electric co-ops press for repeal of gas power plant emissions rules
Leaders of several major electric cooperatives are pushing the federal government to fully repeal a 2024 EPA rule that limits greenhouse gas emissions from gas-fired power plants. The rule requires new gas plants that run more than 40% of the time to meet strict carbon dioxide limits and capture 90% of their emissions by 2032. Co-op executives, including the head of the National Rural Electric Cooperative Association, argue the rule makes it too hard to build the gas plants they say are needed to keep up with fast-growing electricity demand, especially from data centers. The EPA proposed repealing the rule last year, and a review by the White House budget office was due within 90 days. That deadline passed this month without a decision, so the rule's future is still undecided. Co-op leaders say they need a full repeal, not changes, because they see the emissions threshold as unworkable and carbon-capture technology as not yet practical at commercial scale. For homeowners, this doesn't change anything about your house or your utility bill right now. It's a sign of where the country's electric grid may be headed: more new power plants running on natural gas rather than renewables, as utilities try to meet demand from data centers and other large users. Whether and how this affects your own electric rates would depend on what your local utility or co-op decides to build, and on how this federal rule is eventually resolved.
TVA’s Data Center Rate: Talk is Cheap, Until it isn’t
The Tennessee Valley Authority's board has approved a new electricity rate for data centers, but with almost no public detail about how it works. The utility, which serves parts of Tennessee, Alabama, Georgia, and North Carolina, plans to spend $13.5 billion over the next three years to handle rising demand, most of it driven by data centers. Board members voted unanimously to approve the new rate without asking a single question at the meeting, and the only public information is a single slide. What's known: existing and already-planned data centers get three years to phase into the new rate, the new rate charges data centers about 10% more than the old one, and there's an extra charge for large facilities using more than 5 megawatts of power. What's missing is anything that would let ratepayers judge whether this actually protects them: how TVA defines a "data center," whether there are contract minimums or exit fees if a data center shuts down early, and how TVA calculated the cost of serving these facilities in the first place. This matters to ordinary customers because if a data center leaves after a few years, the power plants and grid upgrades built to serve it don't disappear — the remaining costs can get spread across everyone else's bills for decades. Without the underlying cost studies made public, there's no way to independently confirm that data centers are truly covering their own costs rather than shifting some of the burden onto residential customers.