Making proxy residual emission rates data more accessible

As decarbonization efforts accelerate across the utility sector, precise carbon accounting methods have become essential for regulatory compliance and meaningful climate action. One of the most challenging aspects of this accounting is properly attributing emissions from electricity that lacks specific environmental claims — a challenge solved through the application of a “residual mix” emission factor. In this blog post, we will go into detail on what the residual mix is (and how it differs from a utility’s “standard delivery” mix), the challenges with calculating it, and how Singularity is solving the residual mix data access problem through the launch of two proxy sources — hourly fossil-only emission rates for the entire U.S.