Hydrostor: Funding, Investors & Team (Sep 2026)
Hydrostor offers an innovative technology called Advanced Compressed Air Energy Storage (A-CAES) that is ideal for supporting the transition to a more sustainable and reliable electricity grid. A-CAES provides unique grid services that cannot easily be replicated by other energy storage technologies, making it a valuable option in the market. It can be used to meet various electricity system needs including dispatchable capacity, integrating renewable energy, deferring transmission upgrades, and providing ancillary services. This technology is well-suited for behind-the-meter or remote applications such as mining and large industrial operations. Hydrostor's solution offers cost-effective, long-duration energy storage with zero emissions and can be located wherever it is needed on the grid, potentially replacing retired fossil fuel plants and eliminating the need for new transmission infrastructure. In addition to the technology itself, Hydrostor provides a comprehensive solution that includes financing and warranty, working with top EPC providers to deliver solutions on a global scale.
Hydrostor has raised $2.0B across 4 funding rounds on record, the most recent an undisclosed round announced in Jan 2026.
Hydrostor Company Profile and Key Stats
Latest funding round on record: Jan 2026.
Hydrostor Funding Rounds
1 of 4 rounds was announced without a disclosed amount and is excluded from the total.
Hydrostor raised $250M in an undisclosed round announced in Jan 2022.
3 months later, a Debt Financing of $25.0M was announced in Apr 2022.
2.8 years later, an undisclosed round of $1.8B was announced in Jan 2025.
1 years later, an undisclosed round was announced in Jan 2026 with no disclosed amount.
Hydrostor Founders and Leadership Team
Contact details for the Hydrostor team: 1 of 2 have an email address on file.
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Hydrostor Funding FAQs
What does Hydrostor do?
Hydrostor offers an innovative technology called Advanced Compressed Air Energy Storage (A-CAES) that is ideal for supporting the transition to a more sustainable and reliable electricity grid. A-CAES provides unique grid services that cannot easily be replicated by other energy storage technologies, making it a valuable option in the market. It can be used to meet various electricity system needs including dispatchable capacity, integrating renewable energy, deferring transmission upgrades, and providing ancillary services. This technology is well-suited for behind-the-meter or remote applications such as mining and large industrial operations. Hydrostor's solution offers cost-effective, long-duration energy storage with zero emissions and can be located wherever it is needed on the grid, potentially replacing retired fossil fuel plants and eliminating the need for new transmission infrastructure. In addition to the technology itself, Hydrostor provides a comprehensive solution that includes financing and warranty, working with top EPC providers to deliver solutions on a global scale.
How much funding has Hydrostor raised?
Hydrostor has raised $2.0B across 4 rounds on record.
When did Hydrostor last raise funding?
Hydrostor's most recent funding round on record was announced in Jan 2026. The amount was not disclosed.
Who founded Hydrostor?
FundedIQ lists Cameron Lewis (Founder) at Hydrostor.
Who is the CEO of Hydrostor?
Curtis VanWalleghem is listed as CEO at Hydrostor.
Where is Hydrostor headquartered?
Hydrostor is based in Toronto, Ontario, Canada.
How many employees does Hydrostor have?
Hydrostor is in the 101-250 employee band.
About FundedIQ's Hydrostor Funding Data
FundedIQ tracks announced funding rounds and refreshes this profile every week. Round dates, stages and amounts are normalised to a single format, converted to US dollars, and de-duplicated: two records of the same round announced days apart are merged, and two genuinely different rounds are kept apart on the amounts they disclose. Amounts shown are the disclosed figures only — a round announced without a number is listed and excluded from the total rather than estimated.
Employee counts are reported bands, not exact headcounts. Founder and executive names carry the job title on record. Anything we do not hold for Hydrostor is left off this page rather than filled in.
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