The Energy Storage Report 2024

Now available to download, covering deployments, technology, policy and finance in the energy storage market

PG&E commissions 182.5MW/730MWh Tesla BESS at Moss Landing

LinkedIn
Twitter
Reddit
Facebook
Email

Californian investor-owned utility (IOU) PG&E has commissioned the 182.5MW/730MWh battery energy storage system (BESS) supplied by Tesla at its Moss Landing substation.

The BESS project in Monterey county, known as the Elkhorn Battery, was fully energised and certified for market participation by the California Independent System Operator (CAISO) on 7 April. It was designed, built and will be maintained by both PG&E and Tesla while the project is owned and operated by PG&E.

This article requires Premium SubscriptionBasic (FREE) Subscription

Enjoy 12 months of exclusive analysis

  • Regular insight and analysis of the industry’s biggest developments
  • In-depth interviews with the industry’s leading figures
  • Annual digital subscription to the PV Tech Power journal
  • Discounts on Solar Media’s portfolio of events, in-person and virtual

Or continue reading this article for free

Elkhorn comprises 256 Tesla Megapack battery units on 33 concrete slabs with each unit housing batteries and power conversion equipment in a single cabinet. It connects to the 115kv electric transmission system through transformers and switchgears installed as part of the project.

It can discharge 182.5MW of power for up to four hours and will participate in the CAISO wholesale electricity markets as well as ancillary services like operating reserve.

It is not to be confused with Vistra Energy’s 400MW/1,600MW Moss Landing Energy Storage Facility located at the same site, also owned by PG&E. That one is the largest BESS in the world and Vistra recently announced plans to add another 350MW/1,400MWh of storage. It temporarily went offline last year due to a faulty sprinkler system.

Elkhorn brings PG&E’s battery storage connected to California’s electricity grid to 955.5MW, spread across six projects commissioned over 2021 and 2022, with another 1,400MW expected to come online this year. Vistra’s Moss Landing BESS is the largest, followed by LS Power Development’s 200MW Diablo Storage System in Contra Costa County, followed by Elkhorn. The utility is under contract to bring on 3,330MW in total by 2024.

BESS projects like these and others by PG&E’s fellow IOUs SDG&E and SCE are in responsive to a series of directives from the California Public Utilities Commission (CPUC). The most recent was an order to procure 11.5GW of clean energy by the CPUC in mid-2021, with resources required to come online between 2023 and 2026. The state aims to have a carbon-free grid by 2045.

Nearly 3GW of BESS is now connected to CAISO’s grid (which accounts for the majority of the electricity system in the state) and is doing up to 6GWh of load shifting a day, as Energy-storage.news recently reported last week.

SDG&E also this week announced the completion of a microgrid project in the CPUC’s designated ‘high fire threat district’.

The Romana microgrid facility, one of four planned in the area, will use a 500kW/2000kWh BESS to provide backup power to the Ramona Air Attack Base. The base is home to CAL FIRE and U.S. Forest Service’s aerial firefighting assets including an OV-10A Bronco tactical aircraft and two S-2T airtankers.

It is part of the utility’s efforts to keep essential resources powered during Public Safety Power Shutoffs (PSPS).

22 October 2024
New York, USA
Returning for its 11th edition, Solar and Storage Finance USA Summit remains the annual event where decision-makers at the forefront of solar and storage projects across the United States and capital converge. Featuring the most active solar and storage transactors, join us for a packed two-days of deal-making, learning and networking.
18 March 2025
Austin, Texas
The Energy Storage Summit USA is the only place where you are guaranteed to meet all the most important investors, developers, IPPs, RTOs and ISOs, policymakers, utilities, energy buyers, service providers, consultancies and technology providers in one room, to ensure that your deals get done as efficiently as possible. Book your ticket today to join us in 2025!

Read Next

May 24, 2024
The new tariffs on batteries from China will increase costs for US BESS integrators by 11-16%, consultancy Clean Energy Associates said, adding that new guidance around the domestic content ITC adder will make it easier to access.
Premium
May 23, 2024
The Kern County, California hybrid facility will have the capability to generate up to 2GW of solar power co-located with up to 2GW of battery energy storage system (BESS) capacity, spanning approximately 12,875 acres of privately owned land.
May 23, 2024
The Gore Street Energy Storage Fund’s international diversification helped it maintain average revenues across its portfolio, which spans the Great Britain (GB), Ireland, Germany and Texas, US.
May 23, 2024
Innergex Renewable Energy has started operating a 35MW/175MWh battery energy storage system (BESS) in Chile, its second large-scale BESS in the country.
Premium
May 22, 2024
We hear from developers, IPPs and upstream battery sources about the US’ decision to massively hike tariffs on batteries and battery components from China.

Most Popular

Email Newsletter