September 14, 2023: LS Energy Solutions is to provide the battery tech for the Gore Street Energy Storage Fund’s 200MW/400MWh BESS in California’s Imperial County.
The so-called Big Rock lithium ion BESS is expected to provide resource adequacy and ancillary services to the California Independent System Operator market and improve grid reliability.
The BESS will comprise 137 all-in-one AiON-ESS containers with a two-hour storage capability.
Each of the modular storage units LS will supply will have a 1.5MW capacity and be able to store 3.5MWh of electricity, the companies said.
The units, together with 1,300 LS modular 140 kVA AiON-SIS string inverters, will create one of the largest energy storage installations in Imperial County, the partners said.
In addition to supplying the AiON-ESS containers, LS also expects to provide commissioning support and operational services for the facility.
The battery will be run at 100MW of deliverability to supply 400MWh to meet the four-hour discharge requirements under a resource adequacy contract.
Gore Street acquired the Big Rock site in February 2023 from Avantus, which will continue to provide administrative and development services for the installation.
Big Rock is Gore Street’s first project in California and its latest BESS investment after projects in Texas, Ireland, the UK and Germany.