Upstart Power
PrivateLast Round
Seed Round
Jun 12, 2026
Total Funding Raised
$58.83M
Momentum
Top 50%
of companies Caplight tracks
Company Overview
Upstart Power operates in Energy & Sustainability and is based in Southborough, Massachusetts. Its latest recorded funding round was a Series D Extension round in December 2024.
Upstart Power is a cleantech company that designs and manufactures solid oxide fuel cell (SOFC) generators for on-demand backup power and distributed generation in residential and industrial applications.
Sector
Energy & Sustainability
Verticals
Renewable Energy, Energy Management, Energy Storage, Alternative Fuels
Business Model
B2B
Customer Profile
Hardware Sales
AI Layer
Non-AI
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Upstart Power Comparables
Compare Upstart Power with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| WATT Fuel Cell | 90% | |
| Redox Power Systems | 82% | |
| BWR Innovations | 80% |
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Upstart Power Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Seed Round | Jun 12, 2026 | ||||
| Series D Extension | Dec 26, 2024 | ||||
| Series D | Jul 1, 2024 | ||||
| Series C | Nov 17, 2022 | ||||
| Series B | Dec 16, 2020 | ||||
Seed | Dec 18, 2019 |
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Key People
Founding team and executive leadership
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Upstart Power Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| WindSail Capital Group | Series B |
| Cricetus Felix Ventures | Series C |
| H+ Partners | Series C |
Market signals
Structured signals derived from secondary market and firmographic data.
- Jul 24, 2026
Monthly visitors grew 94% MoM.
- Jun 12, 2026
$4.1M raised in Seed Round.
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Upstart Power Filings
Explore SEC and related filing metadata, where available.
| Type | Date | Amount Offered | Amount Sold | Filing | Pages | Download |
|---|
Filing documents are not displayed on this public page. Request access to learn about available coverage.
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Frequently Asked Questions
Common questions about Upstart Power's valuation, stock price, and market status.
Is Upstart Power a public or private company?
Upstart Power is a private company.
What is the current stock price of Upstart Power?
Upstart Power is a private company, so its shares have no public market price. Caplight tracks Upstart Power's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Upstart Power worth (valuation)?
Valuation information for Upstart Power is not publicly available.
Can I buy Upstart Power stock?
Upstart Power shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was Upstart Power's last funding round?
Upstart Power's most recent funding round was Seed Round on June 12, 2026.
Who are the main investors in Upstart Power?
Key investors in Upstart Power include WindSail Capital Group, Cricetus Felix Ventures, H+ Partners.
Will Upstart Power IPO soon?
No public IPO plans have been announced for Upstart Power.
How can I track Upstart Power secondary market activity?
Caplight tracks bids, offers, and trades in Upstart Power's shares on secondary markets.