Key facts
- Hydrostor’s last known valuation is $9.2M (Oct 2016).
- 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).
- ·The complete investor list — 15 names
- ·Watchlist + deal alerts for Hydrostor
- ·The full record, as it builds
Funding rounds
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.
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
- Website
- hydrostor.ca/
- Ownership
- Privately Held (backing)
Hydrostor doesn't have a composite mark yet — a PA Mark is published once enough pricing inputs exist (trade prints, fund marks, round prices). The rest of the record below builds toward it.
Recorded secondary trades
No secondary trades in Hydrostor shares have been recorded yet. When a print lands — third-party, direct report, or platform — it appears here with structure, source, and price.
Institutional fund marks
No SEC-registered fund has reported a fair-value mark on Hydrostor in its N-PORT filings yet. We sweep new filings monthly.