Premier Alternatives

Hydrostor

Toronto, Canada · Founded 2010 · Privately Held (backing)

Provider of advanced compressed air energy storage services intended to replace the use of fossil fuels. Hydrostor is based in Toronto, Canada and was founded in 2010. Its last reported valuation was $9.2 million in Oct 2016. It has raised $2.3 billion.

Last reported valuation
$9.2M
Oct 2026
Priced at
—
Total raised
$2.3B
Last round
—

Hydrostor key facts

as of Oct 2026
  • Provider of advanced compressed air energy storage services intended to replace the use of fossil fuels.
  • Hydrostor is valued at approximately $9.2M as of Oct 2026 (last reported valuation).
  • It has raised $2.3B; the latest was PE Growth/Expansion in Nov 2025.
  • Notable investors include BDC Capital, Goldman Sachs Asset Management, CPP Investments, Plaza Asset Management, Crux Capital — 15 tracked in total.
  • Hydrostor has filed 2 Form Ds with the SEC since 2021, most recently Nov 2025 ( sold).
  • Status: Privately Held (backing).
Last reported valuation
LOW confidence
$9.2M

Hydrostor's last reported valuation, Oct 2016. Nothing priced has surfaced since.

set by last reported valuationas of Oct 2026question about this number?
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Hydrostor funding rounds

No rounds on record

No funding rounds for Hydrostor are on record yet — either the company hasn't raised institutional capital, or the raise hasn't surfaced in our sources.

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Hydrostor valuation

Hydrostor's last reported valuation was $9.2 million in Oct 2016. No priced round, secondary trade or fund mark has surfaced since.

How much has Hydrostor raised?

Hydrostor has filed 2 Form Ds with the SEC since 2021, most recently in Nov 2025 (null sold).

Hydrostor investors

15 investors are on record for Hydrostor, including BDC Capital, Goldman Sachs Asset Management, CPP Investments and Plaza Asset Management.

About Hydrostor

Provider of advanced compressed air energy storage services intended to replace the use of fossil fuels. The company's services convert electrical energy into compressed air and store it offshore until needed during peak consumption times on the power grid, when it can be converted back into energy, helping clients from mines and large industrial operations with long-duration, non-emitting, and cost-effective energy storage.

Sector
Energy
HQ
Toronto, Canada
Founded
2010
Employees
126
Ownership
Privately Held (backing)

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