Wartsila to deliver 500 MW energy storage systems to Clearway Energy

Wartsila energy storage system

Wartsila said it is delivering a 500-megawatt (MWac) / 2-gigawatt hour (GWh) portfolio of energy storage systems to Clearway Energy Group.

The contracts cover five sites located in Hawaii and California. The combination of energy storage and solar photovoltaic (PV) resources will provide grid reliability to balance an increasing mix of renewable generation.

“We focus on power system optimization and the integration of different generating assets, providing our customers with the highest reliability at the lowest overall energy cost,” said Hakan Agnevall, President and CEO of Wartsila.

“We aim to bring online a portfolio of solar and storage projects at this scale to ensure reliable and affordable clean energy for our customers,” said Craig Cornelius, CEO of Clearway Energy Group.

The portfolio includes the Daggett 2 and Daggett 3 projects, which taken together represent one of the largest co-located photovoltaic plus storage facilities in California, at 482 MWac of solar PV and 275 MWac / 1.1 GWh of energy storage.

The Daggett projects are in San Bernardino, California, adjacent to the site of a retired coal and natural gas plant. The AC-coupled energy storage systems will deliver renewable energy during increasingly volatile peak periods and help the state reach its goal of 100 percent carbon-free electricity by 2045.

Two projects, comprising 75 MWac / 300 MWh of energy storage, are being installed at Clearway Energy Group’s Mililani I Solar and Waiawa Solar Power facilities on the Island of Oahu in Hawaii. The addition of energy storage will help Clearway Energy Group ensure delivery of sustainable energy and contribute to Hawaii’s goal of reaching 100 percent renewable energy generation by 2045.

The Mililani I Solar and Waiawa Solar Power projects are Wartsila’s first large-scale energy storage systems in Hawaii.

The 147 MWac / 588 MWh energy storage system will be connected to the operating 192 MWac Rosamond Central solar PV facility in Kern County, California. The energy storage system will increase the effectiveness of the solar facility by performing ancillary services, primarily solar shifting, for the California Independent System Operator.

Each facility will include Wartsila’s GridSolv Quantum, a modular and compact energy storage system, as well as the GEMS Digital Energy Platform, Wartsila’s energy management platform for power system optimisation.

All five projects will also include long-term Service+ GAP agreements with Wartsila, thus guaranteeing capacity and providing maintenance with performance guarantees for the lifecycle of the energy storage systems.