Even Under Extreme Warming, ASEAN’s Wind & Solar Generation Variation From Normal Will Be Less Than 1% In 2030

A new report on Southeast Asia's power grid offers a useful data point for anyone weighing solar or battery storage at home: distributed renewable energy holds up far better under extreme weather than large, centralized fossil fuel plants. The report, from energy think tank Ember, looked at the ASEAN region, where about 64% of power capacity still comes from fossil fuels. It found that even under the most extreme warming scenarios projected for 2030, wind and solar output would vary by less than 1% from normal levels, a much smaller swing than the losses expected at fossil fuel and nuclear plants even under milder warming.

The reasoning: rooftop solar, wind, and battery systems spread generation across many small sites instead of concentrating it in one large plant. When a storm, earthquake, or other disaster hits, damage stays localized and can be repaired faster, rather than knocking out power for an entire region at once. The report cites real examples, including a 2018 earthquake in Indonesia that disabled a coal plant and damaged over a thousand distribution units, and repeated typhoon outages in a diesel-dependent Philippine province.

None of this changes rebate programs or equipment choices available to homeowners elsewhere, but it reinforces a point relevant to anyone considering solar panels or a home battery: these systems are not just about lowering bills or emissions. They also tend to keep working, or come back online faster, when the broader grid takes a hit.