Adden Energy
PrivateLast Round
Series B
Oct 5, 2026
Total Funding Raised
$20.15M
Momentum
Top 5%
of companies Caplight tracks
Company Overview
Adden Energy operates in Energy & Sustainability and is based in Waltham, Massachusetts. Its latest recorded funding round was a Series A round in October 2024.
Adden Energy is a clean-tech company that develops and manufactures next-generation solid-state lithium-metal batteries for electric vehicles.
Sector
Energy & Sustainability
Verticals
Energy Storage, Electric Vehicles, Advanced Materials, Clean Manufacturing
Business Model
B2B
Customer Profile
Hardware Sales
AI Layer
Non-AI
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Adden Energy Comparables
Compare Adden Energy with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Ion Storage Systems | 85% | |
| Basquevolt | 84% | |
| Sichuan SEVCPOWER Technology Co., Ltd. | 83% |
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Adden Energy Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series B | Oct 5, 2026 | ||||
| Series A | Oct 23, 2024 | ||||
| Seed | Sep 1, 2022 |
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Key People
Founding team and executive leadership
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Adden Energy Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Primavera Capital Group | Series A, Seed |
| MassVentures | Series A, Seed |
| Rhapsody Venture Partners | Series A, Seed |
| At One Ventures | Series A |
| Primavera Capital Group | Series A, Seed |
Market signals
Structured signals derived from secondary market and firmographic data.
- Oct 5, 2026
$17M round closed.
- Sep 12, 2026
Monthly visitors grew 78% MoM.
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Adden Energy 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 Adden Energy's valuation, stock price, and market status.
Is Adden Energy a public or private company?
Adden Energy is a private company.
What is the current stock price of Adden Energy?
Adden Energy is a private company, so its shares have no public market price. Caplight tracks Adden Energy's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Adden Energy worth (valuation)?
Valuation information for Adden Energy is not publicly available.
Can I buy Adden Energy stock?
Adden Energy shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was Adden Energy's last funding round?
Adden Energy's most recent funding round was Series B on October 5, 2026.
Who are the main investors in Adden Energy?
Key investors in Adden Energy include Primavera Capital Group, At One Ventures, Primavera Capital Group.
Will Adden Energy IPO soon?
No public IPO plans have been announced for Adden Energy.
How can I track Adden Energy secondary market activity?
Caplight tracks bids, offers, and trades in Adden Energy's shares on secondary markets.