PJM battery energy storage developers are struggling to secure project financing despite favorable market conditions, with enSights CEO identifying inaccurate financial modeling — not weak market fundamentals — as the primary barrier. Lenders are stress-testing revenue stacks and finding that developers’ projections for capacity payments, energy arbitrage, and ancillary services often collapse under conservative assumptions, creating a credibility gap that stalls capital deployment.
The PJM capacity market’s evolving structure, including the transition to the Capacity Performance construct and shifting capacity price signals, has introduced complexity that many models fail to capture accurately. Developers frequently anchor revenue forecasts to peak capacity clearing prices or optimistic energy arbitrage spreads without adequately modeling derating factors, forced outage rates, or the probability of price suppression during high-renewable-output hours. These omissions become critical when lenders apply haircuts to revenue streams that lack firm contractual backing.
Ancillary service markets present another modeling blind spot. While frequency regulation and synchronous reserve markets have historically provided meaningful revenue, their depth is limited and participation rules are tightening. Models that assume sustained high prices for these services ignore saturation effects and the growing competition from other storage assets and demand response resources. enSights’ analysis suggests that developers who build portfolios of contracted revenue — including tolling agreements or capacity contracts — alongside merchant exposure face significantly smoother financing paths.
The financing bottleneck reflects a maturation of the storage asset class: capital providers now demand the same rigor applied to thermal and renewable projects. Developers who invest in probabilistic modeling, incorporate correlation risks across revenue streams, and present transparent downside cases will differentiate themselves. As PJM’s market design continues to evolve, the gap between promotional pro formas and bankable forecasts will determine which projects reach financial close.
Read the full report at Energy Storage News