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Hydrostor
Develops low-cost grid-scale energy storage, using proprietary underwater compressed air
About Hydrostor
Hydrostor is a Canadian company that specializes in long-duration energy storage solutions. The company has developed a patented technology called Advanced Compressed Air Energy Storage (A-CAES), which is a method of storing energy that is both cost-effective and scalable.
Read full description
The A-CAES system works by using off-peak electricity to compress air and store it in underground caverns. When electricity is needed, the compressed air is released and used to drive a turbine, which generates electricity. This system is designed to provide a reliable and flexible source of energy that can be used to support the grid during times of high demand or when renewable energy sources are not available.
Hydrostor's business model is focused on developing, owning, and operating energy storage facilities. The company works with utilities, grid operators, and other stakeholders to develop projects that meet the specific needs of the local energy market. Hydrostor's projects are designed to provide a range of services, including grid ancillary services, capacity, and energy arbitrage.
At a glance
- Status
- Operational
- Founded
- 2010
- Headquarters
- Toronto, Canada
- Employees
- 138
- Open positions
- None listed
- Dealroom signal
- 83.9/100
- Sub-industry
- Energy Storage
- Sector
- Energy, Hydropower, Sustainable Development Goals, Climate Tech, Stationary Energy Storage, Grid Energy Storage, Renewable Energy, Long Duration Energy Storage, NIF defense security and resilience, NIF Energy Security and Climate Change
- Technology
- Hardware, Deep Tech
- Business model
- Manufacturing
- Client focus
- b2b
Latest news
Press, funding announcements and product moves mentioning Hydrostor.
Funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| PROJECT, REAL ESTATE, INFRASTRUCTURE FINANCEOther financing | Jan 2026 | $0 | — | Baker Hughes | ↗ |
| PROJECT, REAL ESTATE, INFRASTRUCTURE FINANCEOther financing | Sep 2025 | $55M | — | Export Development Canada | ↗ |
Growth signals
Latest recorded traffic for Hydrostor is 13K monthly website visits, up 113.1% over the last three months. Hydrostor's team grew 8.7% over the past year.
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Investors
From Dealroom's funding and investor records, grouped by the round each investor first entered.
Seed1 investor entered at this stage
Sustainable Development Technology Canada
Series A6 investors entered at this stage
MaRS Catalyst Fund
ArcTern Ventures
Canoe Financial
Lorem Partners
CPP Investments- CFCanada Growth Fund
Series B and later3 investors entered at this stage
Elemental Energy
BDC Capital
Goldman Sachs Asset Management
Other known investors2 additional known investors
Baker Hughes
Export Development Canada
Source: Dealroom Talent Intelligence.
Global footprint
team presence
Market sentiment
An AI-synthesised read of the highest-engagement posts about Hydrostor on X, ranked by likes and reposts, corporate channels excluded.
Reading the room on X — pulling top posts and synthesizing themes…
Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
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