Proposed GHG Protocol Rule Change Threatens to Disrupt Global Clean Energy Accounting and Investment

The Greenhouse Gas Protocol has proposed a significant update to Scope 2 emissions accounting that would require companies to match their electricity consumption with clean energy production on an hourly basis and within the same grid. This shift from the current annual, geographically broad matching standard could invalidate over 90 percent of the existing multibillion-dollar certification market, impacting nearly 80 percent of North American companies with net-zero targets. The proposed change aims to reduce greenwashing but faces intense pushback from major corporate buyers and industry groups who argue it could stifle renewable energy investment.

The Greenhouse Gas Protocol (GHG Protocol) is considering a draft update that would mandate hourly time-and-location matching for purchased electricity, a departure from current rules that allow for annual sourcing from wider geographic areas. If implemented without a legacy clause, this change could disrupt the sustainability strategies of the Global Fortune 500, where 97 percent of S&P 500 companies pursuing net-zero targets currently rely on the Protocol’s framework. Experts suggest the move could invalidate more than 90 percent of the multibillion-dollar certification market, potentially triggering a costly multi-year reset for major corporations, with the exception of early adopters like Google and Microsoft.

Feedback on the proposal has been overwhelmingly negative, with only 22 percent of over 1,000 respondents supporting hourly matching. The Clean Energy Buyers Association (CEBA)—which represents tech leaders like Amazon and Salesforce as well as retailers like Lululemon—warned that mandatory matching could drive away corporate investors and undermine the Protocol's relevance. Critics argue that the revision would eliminate investment incentives that have historically sparked over 100 gigawatts of renewable capacity in the U.S. and funded 260 gigawatts globally through Renewable Energy Credits (RECs).

The proposed rules may create unintended consequences for grid decarbonization by incentivizing investment in the wrong areas. A study commissioned by Meta revealed that the new requirements would push the company to invest in regions like California’s CAISO, which already faces solar oversupply, while discouraging investments in the midcontinent MISO grid where coal still accounts for 30 percent of generation. Critics contend that forcing a theoretical connection between buyers and sellers ignores the physical reality that electricity mixes on the grid, making it impossible to track the exact provenance of electrons.

Amidst the pushback, the GHG Protocol working group is scheduled to meet to address concerns and potentially consider a compromise, such as making hourly accounting optional. Other major stakeholders are already trending toward flexibility; the Science-Based Target initiative (SBTi) recently released a standard that includes hourly matching only as a voluntary recognition program rather than a requirement. This shift comes as regulators in California and the European Union have also delayed reporting updates, reflecting a broader industry preference for adaptable frameworks over rigid accounting mandates.