Pumped Thermal Energy Storage (PTES Molten Salt 50MW) LCOS Calculator 2026

Model 50MW / 500MWh pumped thermal electricity storage (PTES) heat pump systems converting surplus grid power into high-temperature molten salt (565°C) and cold gravel (-160°C) with 68% round-trip efficiency.

Underwriting Assumptions

Rated Plant Power (MW)

Discharge Duration (Hours)

Turnkey Molten Salt & Heat Pump Capex ($M)

Off-Peak Charging Power Price ($/MWh)

Peak Capacity Arbitrage Price ($/MWh)

Annual Full Cycles

Projected Economics

Gross Annual Power Arbitrage Sales

Net Annual Operating Cash Flow

Capital Payback Period