With FERC approval of SPP’s expedited resource adequacy study (ERAS) process now in hand, SPP has notified stakeholders that the one-time study’s submission window for fast-track reviews will open Sept. 2. 

In a July 28 email to load-responsible entities, generator interconnection customers and other stakeholders, SPP said it has targeted March 20, 2026, to execute GI agreements. It said the target date is subject to study progress and the timely completion of all process steps. 

The ERAS submission window will close Oct. 2. At that time, the RTO will notify applicants of any deficiencies in their requests and allow them to address the issues during a certain time period. 

The study itself will begin Oct. 17, subject to execution of required agreements. Staff will work with applicants on agreement execution, study cost deposits, procedural requirements and other steps as the process continues. 

Ceiling capacity values — the maximum amount each LRE can select for inclusion in the ERAS — will be posted to their respective resource adequacy folders by Aug. 1. 

SPP proposed the one-time ERAS study outside of its normal planning process to help LREs meet their resource adequacy (RA) requirements for 2030. It said the study was necessary because there is a 16.7-GW aggregate gap between resource adequacy requirements and capacity. 

FERC agreed with a July 21 order approving the ERAS process. It found that SPP has “existing authority” under its tariff to evaluate and maintain resource adequacy and to manage its interconnection queue to provide sufficient generation to meet RA requirements. It agreed with SPP that ERAS requests will receive a GIA “significantly sooner” than those processed through the RTO’s normal study process. (See FERC Approves SPP’s ERAS Process, Accreditation.)