Hydrostor
PrivateLast Round
Debt
Sep 16, 2025
Est. Valuation
$500M
Total Funding Raised
$571.2M
Momentum
Top 25%
of companies Caplight tracks
Company Overview
Hydrostor is an energy storage company that develops and operates long-duration energy storage systems using its patented Advanced Compressed Air Energy Storage (A-CAES) technology.
Sector
Energy & Sustainability
Verticals
Energy Storage, Renewable Energy, Smart Grid
Business Model
B2G
Customer Profile
Services & Consulting, Government Contracts
AI Layer
Non-AI
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Hydrostor Comparables
Compare Hydrostor with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Highview Power | 86% | |
| Energy Dome | 84% | |
| Form Energy | 80% | |
Hydrostor Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Debt | Sep 16, 2025 | ||||
| Convertible Debt | Feb 13, 2025 | ||||
| Debt | Jan 9, 2025 | ||||
| Private Equity | Jan 10, 2022 | ||||
| VC Round | Aug 4, 2021 | ||||
Grant | Apr 15, 2021 |
Key People
Founding team and executive leadership
Hydrostor Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| CPP Investments | Private Equity, Convertible Debt |
| Sustainable Development Technology Canada | Grant |
| Amplify Capital | Growth Equity, Series B |
| BDC Capital | VC Round |
| Canoe Financial | Series B, Growth Equity |
| Goldman Sachs Asset Management Private Equity | Private Equity |
| US Department of Energy Loan Programs Office | Debt |
Market signals
Structured signals derived from secondary market and firmographic data.
- Jun 19, 2026
Monthly visitors increased 76% MoM.
- Feb 25, 2026
Launched Advanced Compressed Air Energy Storage solution.
Hydrostor Filings
SEC and related filings with document metadata.
| Typed | Date | Amount Offered | Amount Sold | Filling | Pages | Download |
|---|---|---|---|---|---|---|
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Frequently Asked Questions
Common questions about Hydrostor's valuation, stock price, and market status.