How the maker of Advil and Tums adds the price of carbon to supplier contracts

This is a corporate supply-chain story, not something that changes what's available to homeowners planning energy upgrades. Haleon, the UK company behind Advil and Tums, has started factoring carbon costs into how it picks suppliers. When it asks for price quotes, it also asks for an estimate of the emissions tied to that purchase, then adds a cost based on the European Union's carbon trading price (around €80 per metric ton) to get a true total. The supplier with the lowest combined price wins, which means a cheaper but higher-emission bidder can lose out to one that charges more but pollutes less.

The effect varies by product. For something like a plastic bottle, the carbon add-on can raise the effective cost by about 10 percent. For a more expensive ingredient like acetaminophen, it might only add 1 percent. On average, it changes the outcome of one or two deals out of every ten. Haleon says the bigger shift has been suppliers improving how they measure and report emissions, since nearly a quarter now track their own data instead of relying on industry averages.

Haleon is also testing contracts that reward suppliers for cutting emissions over the life of a deal, with yearly check-ins and penalties if they fall short. The goal is to help the company meet its target of cutting supply-chain emissions 42 percent by 2030, from a 2022 baseline. None of this involves home energy programs, rebates, or equipment choices for homeowners.