Clearway Energy and Wärtsilä to add battery storage to five US solar projects

By Cameron Murray
Facebook
Twitter
LinkedIn
Reddit
Email
The BESS will be installed at solar plants in California and Hawaii. Image: Clearway Energy Group.

Solar developer Clearway Energy will deploy 500MW/2,000MWh of battery energy storage systems (BESS) from technology company Wärtsilä at five PV plants in the US.

The contracts cover three sites in California and two in Hawaii, all being operated or developed by Clearway.

This article requires Premium SubscriptionBasic (FREE) Subscription

Unlock unlimited access for 12 whole months of distinctive global analysis

Photovoltaics International is now included.

  • Regular insight and analysis of the industry’s biggest developments
  • In-depth interviews with the industry’s leading figures
  • Unlimited digital access to the PV Tech Power journal catalogue
  • Unlimited digital access to the Photovoltaics International journal catalogue
  • Access to more than 1,000 technical papers
  • Discounts on Solar Media’s portfolio of events, in-person and virtual

Or continue reading this article for free

In California, Wärtsilä has started construction on BESS units totalling 275MW/1.1GWh to adjoin the Daggett 2 and Daggett 3 projects, which have 482MWac of PV and are adjacent to the site of a retired coal and natural gas plant.

The third California project is the already-operational 192MWac Rosamond Central solar farm, which will be connected to a 147MW/588MWh BESS from Wärtsilä.

In Hawaii, Wärtsilä is set to finalise construction this year on two projects totalling 75MW/300MWh of energy storage to be installed at Clearway’s Mililani I Solar and Waiawa Solar Power projects, which total 75MWac of PV.

For more on this story, visit sister site Energy-Storage.news.

Read Next

Premium
April 16, 2025
In this blog, PV Tech explores how the upcoming Australian federal election could impact the rollout of renewables and solar PV.
April 14, 2025
US renewable energy company Sunraycer Renewables has closed a US$475 million project financing facility for two solar-plus-storage projects in Texas.
April 10, 2025
Octopus Australia has completed financial close and started construction on its 80MW Fulham solar-plus-storage project in Victoria.
April 10, 2025
The State Electricity Commission (SEC), a state-owned energy company in Victoria, Australia, has confirmed that construction has started on the 119MW SEC Renewable Energy Park.
April 9, 2025
Atlantica Sustainable Infrastructure and Greening plan to build a 1GW solar-plus-storage portfolio in the US.
April 8, 2025
The world’s cumulative installed solar generation capacity has doubled between 2022 and 2024, to reach over 2,000TWh, according to Ember.

Subscribe to Newsletter

Upcoming Events

Media Partners, Solar Media Events
April 23, 2025
Fortaleza, Brazil
Solar Media Events
April 29, 2025
Dallas, Texas
Media Partners, Solar Media Events
May 7, 2025
Munich, Germany
Solar Media Events
May 21, 2025
London, UK
Solar Media Events
June 17, 2025
Napa, USA