Fourth Power
PrivateLast Round
Series A
Extension
Sep 16, 2025
Total Funding Raised
$44.11M
Company Overview
Fourth Power is a clean energy company that develops utility-scale thermal battery storage solutions to capture excess wind and solar energy for on-demand grid dispatch.
Sector
Energy & Sustainability
Verticals
Energy Storage, Renewable Energy, Smart Grid
Business Model
B2B
Customer Profile
Hardware Sales
AI Layer
Non-AI
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Fourth Power Comparables
Compare Fourth Power with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Malta Inc | 81% | |
| Ambri | 78% | |
| MGA Thermal | 77% | |
Fourth Power Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series A Extension | Sep 16, 2025 | ||||
| Series A | Dec 12, 2023 | ||||
| Grant | Feb 27, 2023 | ||||
| Grant | Dec 18, 2018 | ||||
| Grant | Nov 28, 2012 |
Fourth Power Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Munich Re Ventures | Series A Extension |
| Breakthrough Energy Ventures | Series A, Series A Extension |
| BVCC | Series A |
| Department of Energy | Grant |
| DCVC (Data Collective) | Series A Extension, Series A |
Market signals
Structured signals derived from secondary market and firmographic data.
- Feb 27, 2023
$10K grant received from the Department of Energy.
Fourth Power 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 Fourth Power's valuation, stock price, and market status.