Piper: PJM accredits 100MW of solar as just 8 to 10MW
Steve Piper · PJM and the capacity crunch · Jul 31, 2025 · at 25:25
Steve Piper of S&P Global outlines PJM's capacity accreditation formulas across different resource types, including solar, gas, and demand response.
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“If you bring a hundred megawatts of gas generation, we count that as about 70 megawatts of reserve contribution. If you bring a hundred megawatts of solar, we may count that as eight to 10 megawatts of reserve contribution. You know, very, very conservative, maybe appropriate, Given the needs of resource adequacy, demand response is assessed a little bit similar to gas. Maybe between 60 and 70% of the megawatts they say they'll bring, PJM, you know, assesses you'll bring.”
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