Hummingbird Energy Storage :: Part of Landmark Procurement to Replace Natural Gas
Timeline + location driven by PG&E’s need to replace natural gas generation in this area
The Project must be constructed by 2020 to meet the local electrical capacity need previously met by the Metcalf Natural Gas Generation Station.
The Metcalf Substation is a large and relatively new substation, which is the ideal interconnection point because it allows for interconnection without major costly, time consuming, and disruptive system upgrades.
Located in a disturbed area across the street from a large corporate campus.
Technology Lithium ion battery energy storage
Capacity 75 MW / 300 MWh
Location Coyote Valley, California
Status Development :: (PG&E Capacity
Agreement Pending CPUC approval)
Construction Start :: Q2 2020
Operations Start :: December 1, 2020
(contractually required by PG&E)
Interconnection Metcalf Substation at 115 kV
Gen-Tie Underground — Largely City of
San Jose Public Easement
Ownership 100% esVolta LP
Key Fact esVolta’s largest project to date
Hummingbird developed specifically to reduce PG&E’s reliance on natural gas generation
In 2017, Metcalf Generating Station, a 605 MW natural gas fired plant in Coyote Valley, filed to withdraw from the California Independent System Operator (CAISO) market, due to the poor economics of operating the plant.
CAISO said Metcalf could not safely retire as it is critical for local grid reliability, and required PG&E to sign a Reliability Must Run (RMR) contract with Metcalf at above market prices.
The decision to keep Metcalf running was protested by environmental groups, resulting in the California Public Utility Commission requiring PG&E to conduct an RFP to determine if energy storage could replace the retiring natural gas generation at a lower cost.
The energy storage projects offered in the RFP were competitive with the RMR contract and PG&E awarded agreements to several projects including Hummingbird.
Hummingbird Project Benefits
Environmental Group Support
Earth Justice, The Union of Concerned Scientists, Sierra Club, California Environmental Justice Alliance and the Environmental Defense Fund filed a joint letter to the California Public Utilities Commission voicing their support for the battery projects selected by PG&E, including Hummingbird, stating they would: