Transmission Professionals Group
The Transmission Professionals special interest group covers the distribution of power from generation to final destination.
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MISO Solar Capacity Credit calculation comes out in November 2020
MISO is calculating capacity credit for solar for the first time starting 2021/22 planning year (June 21 - May 22). Until now, MISO assigned 50% capacity credit for solar without any calculation. As stakeholders are aware, MISO calculates wind capacity credit annually.
The management plan for MISO Resource Adequacy SubCommittee (RASC), the stakeholder entity where resource adequacy matters are discussed reflects solar and wind capacity credit on Nov RASC meeting agenda.
It remains to be seen if the calculated value for solar capacity credit is lower than 50% as one might expect. Transmission connected solar at MISO is less than 1,000 MW. See slide 70 here. https://cdn.misoenergy.org/20200721%20Informational%20Forum%20Presentation460940.pdf
But MISO is expected to reach 10,000 MW of utility scale solar by the end of 2021, according to MISO's Dispatchable Intermittent Resource filing at FERC. Docket #ER20-595.
Plus MISO has more than 35 GW in the interconnection queue.
Hence this solar capacity credit calculation is critical for determining the capacity value of solar in meeting planning reserve margin requirements.
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