- Date: March 6th, 2024 | Document | 31 Pages
Residual mixes are the attributes of unallocated or unclaimed energy delivered to customers on the electricity grid and are a critical tool that prevents the double counting of clean energy and supports accurate calculations of greenhouse gas emissions resulting from electricity use. To date, there has been no consensus on what data is needed and how it should be used. This guidance was created by CRS’s Clean Energy Accounting Project (CEAP) through a consensus-based process, and provides a long-needed roadmap on the appropriate residual mix methodologies and geographic boundaries for a variety of use cases.
This guidance addresses a variety of residual mixes and data challenges and provides standardized approaches that enable organizations to accurately calculate residual mixes. It can be used by electricity users for scope 2 reporting and utilities mandated to transparently report emissions to customers and regulators. The guidance aids regulators, policymakers, and wholesale market operators in utilizing residual mixes for regulatory policy and publishing credible residual mix data. Furthermore, it emphasizes the significance of renewable energy certificate registries and nationwide tracking systems encompassing all generation types, facilitating accurate data collection, allocation, and utilization for grid-connected fossil and clean electricity generation resources.
