The Riverside Public Utilities Ice Thermal Storage System is a 5,000kW energy storage project located in Riverside, California, US.

The thermal energy storage project uses ice as its storage technology. The project was announced in 2015.


The Riverside Public Utilities Ice Thermal Storage System is owned by Riverside Public Utilities (100%).

The key application of the project is electric energy time shift.

Contractors involved

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Riverside Public Utilities is the owner. Ice Energy is the technology provider for the project.

Additional information

The city of Riverside, California, selected Ice Energy to align with its Utility 2.0 smart grid and renewable energy plan. Ice Energy’s product, the Ice Bear, is a thermal energy storage technology that will help Riverside Public Utilities better integrate its increasing reliance on renewable energy resources like solar, wind, and geothermal systems to maintain low energy costs for its customers.
Ice Energy’s product, the Ice Bear, attaches to one or more standard 5-20 ton commercial rooftop air conditioning units. The Ice Bear freezes ice at night when demand for power is low and capacity is high. Then during the day, the stored ice is used to provide cooling, instead of power-intensive air conditioning compressors, helping to reduce peak use surges.


All publicly-announced energy storage projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects are sourced through secondary information sources such as country specific power players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.