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Primus Power Corporation

Wind Firming EnergyFarm


Primus Power is deploying a 25MW/75MWh EnergyFarm™ in the Modesto Irrigation District (MID) in California’ central valley that consists of an array of 250kW EnergyPods™; plug-and-play zinc-flow battery modules and power electronics systems housed inside ISO shipping containers. The modular design and operation will be field tested at Pacific Gas & Electric with support from Sandia National Laboratories and the Electric Power Research Institute. The 25MW EnergyFarm™ will support MID’s efforts to balance increasing amounts of renewable generation and more efficiently manage its fleet of generating assets to meet peak loads. The system will likely be deployed incrementally in multiple substations and provide additional benefits such as local-area voltage stability and deferral of substation upgrades. EnergyFarms TM are scalable and rapidly deployable, and can be scaled to greater than 100MW/300MWh in increments of 250kW/750kWh.

Contact Information

Ronald Staubly 
Project Manager 
National Energy Technology Laboratory 
3610 Collins Ferry Road 
Morgantown, WV 26507-0880 

Tom Stepien 
Principal Investigator 
Primus Power Corporation 
3967 Trust Way 
Hayward, CA 94545 
(510) 342-7602 

Recipient: Primus Power Corporation
HQ State: California
NERC Region:
Total Budget: $46,700,000
Federal Share: $14,000,000
Funding Program:
Project Type:
Targeted Benefits:
  • Power costs reduced
  • Renewable energy resource adoption accelerated
  • Greenhouse gas emissions reduced
  • Advanced battery manufacturing established in the U.S.

The Department of Energy's Office of Electricity (OE) recognizes that our nation's sustained economic prosperity, quality of life, and global competitiveness depends on an abundance of secure, reliable, and affordable energy resources. OE leads the Department of Energy's efforts to ensure a resilient, and flexible electricity system in the United States. Learn more about OE >>

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