Hydrostor

Hydrostor's A-CAES technology provides an efficient, scalable, and fuel-free solution for long-duration energy storage to enhance grid reliability.

The Goderich Energy Storage Centre proved that Hydrostor’s technology is capable of fully participating in electricity markets while delivering a range of valuable grid services.

Ontario’s projected 65% electricity demand increase by 2050 requires long-duration storage to ensure reliability and integrate clean energy.

As Australia modernizes its grid infrastructure and moves towards aggressive carbon emission reductions, it is undergoing a rapid energy transition. This has brought on significant need for storage to reduce curtailments and make the most of the renewables that are being added to the grid.

Long-duration energy storage technologies store energy for extended periods, supporting future grid planning.

The facility supplies long-duration energy storage to Ontario’s electricity grid, meeting the province’s capacity needs.

Hydrostor partners with Perilya to develop the Silver City Energy Storage (SCES) project using A-CAES technology to provide reliable backup power for Broken Hill.

Hydrostor’s Silver City Energy Storage Centre in Broken Hill received grid connection approval from AEMO and Transgrid.

The funding will advance Hydrostor’s flagship projects, as well as its 7 GW global project pipeline

Curtis VanWalleghem, CEO of Hydrostor, discusses advancements in compressed-air energy storage and the company’s journey to commercial success.

by Nick Wenzel | Oct 26, 2026 | Insights

by William Bartlett | Aug 12, 2026 | Press Release

Hydrostor’s long duration energy storage technology is accelerating the integration of renewable power for a cleaner, more resilient energy future.

Hydrostor secures grid connection approval from the Australian Energy Market Operator (AEMO) and Transgrid for its **Silver City Energy Storage Centre** in Broken Hill. This regulatory milestone enables the project’s connection to transmission infrastructure, advancing development of the long-duration energy storage facility. The approval is a critical step for Hydrostor’s expansion in Australia’s renewable energy grid integration.

Sep 2026HydrostorNews article

Hydrostor raises **$230 million** to accelerate development of its **compressed air energy storage** projects. The funding supports its **flagship initiatives** and a **7 GW global pipeline** of storage solutions. The company leverages advanced technology to enhance grid-scale energy storage capacity.

Aug 2026HydrostorNews article

Granite Construction secures a **$31 million contract** from Hydrostor for early grading work at the **Willow Rock Energy Storage Center** in Kern County, California. The project, located north of Rosamond, advances Hydrostor’s long-duration energy storage development. Granite will include the award in its **third-quarter 2026 capital activity plan**.

Aug 2026graniteconstruction.comNews article

Hydrostor’s Willow Rock Energy Storage Center secures a 60 MW off-take agreement with the Southern California Community Choice Aggregator (CEA). The facility will supply power to over 255,000 CEA customers, enhancing grid reliability in California. The project aligns with the state’s expanding energy demands.

Aug 2026HydrostorNews article