In the June 9 meeting of the Resource Adequacy Subcommittee (RASC), MISO requested feedback on hybrid accreditation proposed BPM-011 language. Additionally, pertaining to surplus interconnection, should a surplus unit enter as Phase I or II? (Phase descriptions are noted in the posted presentation.)
Comments are due by June 23.
Savion, LLC (“Savion”) would like to thank MISO for bringing this item to stakeholders for discussion. In the June 9 meeting of the Resource Adequacy Subcommittee (RASC), MISO requested feedback on hybrid accreditation proposed BPM-011 language. Additionally, pertaining to surplus interconnection, should a surplus unit enter as Phase I or II?
The problem with this proposed BPM language is accreditation periods are not defined beyond stating that the proposed unit needs to have enough operating history to determine availability. Since only eight hours are needed to calculate accreditation once the accreditation period requirement is met, it might be assumed that only eight hours of operation are needed to meet an accreditation period. Savion proposes accreditation period be defined to at least 8760 consecutive hours.
Once the accreditation period is defined then the surplus unit would enter as Phase I if it doesn’t meet the operational requirement of Phase II.
WEC Energy Group is not opposed to MISO's recommendation that a resource registered as Hybrid that is the result of Surplus Interconnection Service will first enter Phase I of the accreditation process, even if operational data exists for the non-surplus portion of the resource.
Regarding the draft BPM language for the accreditation of a Hybrid Resource, we recommend more definitional clarity of "daily peak hours". Load is often reported as net of intermittent resource output but the accreditation of a Hybrid Resource that contains solar should reflect the ability of the Hybrid to serve the daily peak hours (of the relevant season) that are not adjusted (netted) for intermittent (wind and solar) output. Further discussion of the "net" vs. "gross" peak hours is required to ensure that solar and hybrid containing solar are given capacity credit for their ability to serve the gross daily peak hours while also providing a proper market or resource adequacy signal that non-intermittent resources are needed to serve the daily peak hours net of intermittent output. For example, the accreditation of solar and hybrid containing solar resources should reflect their ability to serve the gross peak hours. Under higher levels of intermittent resource penetration that shifts net peak hours into late evening, a separate mechanism, such as a non-intermittent reserve margin, is needed to ensure sufficient resources are available to serve the net peak.