Pluto Energy Storage
Key facts
Performance Analysis
Dashed line = mean of actual generation over the window above. Adjust to exclude partial/ramp months — a fixed all-history mean can mislead.
Hazard Exposure
Detailed analysis hasn't been run. Modeled hazard populates this section once you run it · modeling_hazard_plant.
Insurance Gap Analysis
Coming soon. Premium gap vs. exposure-based pricing — model substrate ready, underwriting curves pending.
Generators
Commercial arrangement
No active commercial arrangement on record. The plant is selling at market unless a contract is added.
Context
Pluto Energy Storage is a 75 MW battery energy storage system (BESS) located in Maricopa County, Arizona. The facility, which began operating in 2025, is owned and operated by Pluto Energy Storage, LLC. It consists of a single generator utilizing battery technology with a duration of 4 hours. The plant's primary fuel is listed as MWH, indicating it draws power from the grid to charge its batteries. Pluto Energy Storage ranks as the 51st largest power plant in Arizona out of 68, and 552nd nationally out of 1205 facilities. The facility operates within the Arizona Public Service Company balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. Financial data indicates a power purchase agreement (PPA) price of $13.96 per MWh, as reported in FERC Electric Quarterly Reports (EQR).
