June 2, 2021
ESA Provides Recommendations to SPP to Improve Storage Capacity Accreditation Study
- incorporate projections of wind and solar generation levels to better capture the value of storage as renewables provide an increasing share of electricity supply;
- include storage durations greater than 8 hours in the study scenarios, as well as specify the durations that can secure a 100% ELCC rating;
- model future tiers of battery storage up to 8,000 MW as was previously done in 2019, rather than up to 5,000 MW as proposed in the Study Scope;
- add future indicative capacity values in the next 5-10 years to provide project developers with a sense of what future capacity values may be; and
- include transmission constraints in the modeling to take into account actual operating conditions and to more accurately inform the capacity values of different durations of energy storage.