Pumped Hydro Is Underrated in the 2026 Portfolio

Pumped hydro storage (PHS) represents ~93% of global installed energy storage capacity and is the only long-duration technology with a multi-decade operating track record and bankable project finance. New greenfield PHS in the U.S. faces severe permitting challenges (FERC licensing timelines of 8–10 years), but closed-loop projects — not connected to a natural waterway — have a streamlined pathway and are advancing faster. The Gordon Butte project in Montana and Goldenrod Energy Center in Minnesota are representative examples. At $150–200/kWh of installed energy capacity, new PHS is not cheap, but the 50+ year asset life and zero fuel cost make the IRR profile compelling for patient infrastructure capital. This asset class is undersupplied relative to grid need.