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Hydrostor

Providing grid-scale electricity storage by storing renewable energy as compressed air.

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Curtis VanWalleghem

Co-Founder, CEO & Board Member at Hydrostor

More about Curtis »
Employees 101–200
Headquarters Toronto, Ontario, Canada
Hydrostor is a leader in Advanced Compressed Air Energy Storage (A-CAES), a technology uniquely suited to enable the transition to a cleaner, more reliable electricity grid. A-CAES helps address electricity system needs for dispatchable capacity, renewable integration and optimization, transmission deferral and ancillary services, and is ideal for use in behind-the-meter or remote applications for mines and large industrial operations. Hydrostor's solution delivers low-cost, long-duration, bulk energy storage that is synchronous and emission-free, and can be flexibly located, including as replacements for retired fossil fuel plants. The proprietary technology is now the leading low-cost bulk energy storage solution -- at half the cost of lithium ion batteries and 10 times the lifespan. Hydrostor is backed by sustainable infrastructure developer/funder Meridiam and equipment supplier BakerHughesGE.

Currently Operating in Four Regions

Press Mentions

May 13, 2026

Hydrostor Announces Development of Advanced Compressed Air Energy Storage Project in Greater Napanee, Ontario

Read on thecanadianpressnews.ca »

February 3, 2026

Baker Hughes to invest in project

Read on Antelope Valley Press »

January 30, 2026

Baker Hughes unveils plan to invest in energy storage project near Rosamond

Read on The Bakersfield Californian »

January 28, 2026

Baker Hughes and Hydrostor Deepen Strategic Collaboration to Advance Reliable, Resilient and Sustainable Power Systems

Read on GlobeNewswire News Room »

January 28, 2026

Baker Hughes and Hydrostor Deepen Strategic Collaboration to Advance Reliable, Resilient and Sustainable Power Systems

Read on GlobeNewswire News Room »

December 30, 2025

Energy storage project near Rosamond OK’d

Read on Antelope Valley Press »

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