NYISO's 10 kW minimum size requirement effectively blocks single-family home batteries from participating in wholesale energy markets until at least 2026

NYISO (New York Independent System Operator) requires individual distributed energy resources to meet a 10 kW minimum size to participate in wholesale markets, even as aggregated resources under FERC Order 2222. A typical residential battery (Tesla Powerwall, Enphase IQ) is 5-13.5 kW, meaning many single-family installations fall below the threshold. NYISO is under a FERC mandate to resolve these barriers, but the deadline is December 31, 2026, and PJM pushed its full Order 2222 implementation even further to February 2028. Why it matters: Homeowners who invested $10,000-15,000 in a home battery system expecting to earn revenue by selling stored energy back to the grid during peak hours discover they are locked out of wholesale market participation, so their payback period extends from 7 years to 12+ years. Longer payback periods make home batteries financially unattractive to the next wave of potential adopters, so residential storage deployment slows in the region that needs it most (New York City has some of the highest peak demand and most constrained transmission in the country). Slower residential storage deployment means New York must continue relying on aging peaker plants in environmental justice communities (many in the Bronx and Brooklyn), so low-income communities of color continue breathing disproportionate pollution. Meanwhile, the multi-year implementation timelines for Order 2222 across ISOs mean this is not just a New York problem -- residential DER market access is blocked or limited across most of the country, so the U.S. wastes the grid flexibility potential of millions of distributed batteries installed in homes nationwide. The structural root cause is that ISO/RTO market rules were written for large, centralized power plants with predictable output and dedicated metering. Accommodating thousands of small, variable, behind-the-meter resources requires fundamentally different telemetry, settlement, and dispatch systems that ISOs have been reluctant to build because it threatens the existing market structure and the incumbents who benefit from it.