Project Finance Structures Are Evolving for DER Scale

FERC issued a 40-year license for the 1,200 MW Goldendale pumped hydro project in Washington State (developer: Rye Development / Copenhagen Infrastructure Partners), while Sage Geosystems closed a $97M Series B led by Ormat Technologies and Carbon Direct Capital for geothermal-based long-duration storage. In the same period, Electrified Thermal Solutions commissioned its first commercial-scale thermal battery at Southwest Research Institute in Texas. Three distinct LDES modalities reaching milestone events within the same news cycle is not coincidence — it reflects a maturing developer and investor base that is now treating LDES as a project-finance-ready asset class rather than a pilot category. The Goldendale license in particular, with its 40-year tenure on private brownfield land, is the template the industry has been looking for: low permitting risk, long contract horizon, and infrastructure-grade counterparties. Energy Storage News