Last Energy
PrivateLast Round
Series C
Dec 16, 2025
Est. Valuation
$15M
Total Funding Raised
$163M
Momentum
Top 10%
of companies Caplight tracks
Company Overview
Last Energy operates in Energy & Sustainability and is based in Austin, Texas. Its latest recorded funding round was a Series C round in December 2025.
Last Energy is a clean energy company that develops modular micro nuclear power plants designed to provide rapid, affordable, and scalable baseload power for industrial customers.
Sector
Energy & Sustainability
Verticals
Energy Management, Clean Manufacturing
Business Model
B2B
Customer Profile
Revenue Share, Services & Consulting
AI Layer
Non-AI
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Last Energy Comparables
Compare Last Energy with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Blykalla | 83% | |
| Oklo | 81% | |
| Natura Resources | 81% |
For institutional investors. Book with your work email.
Last Energy Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series C | Dec 16, 2025 | ||||
| Series B | Aug 29, 2024 | ||||
| Series A | Feb 16, 2021 | ||||
| Seed | Feb 25, 2020 |
For institutional investors. Book with your work email.
Key People
Founding team and executive leadership
For institutional investors. Book with your work email.
Last Energy Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Woori Technology Investment Co. | Series C |
| Astera Institute | Series C |
| Floodgate | Seed |
| Galaxy Interactive | Series C |
| Galaxy Digital | Series C |
| JAM Fund | Series C |
| GigaFund | Series C, Series B, Series A |
For institutional investors. Book with your work email.
Market signals
Structured signals derived from secondary market and firmographic data.
- Oct 8, 2026
Operating a facility at the RELLIS campus in Bryan, Texas.
- Oct 1, 2026
Developing a micro nuclear power plant facility, the PWR-5 Reactor.
For institutional investors. Book with your work email.
Recent news
Latest coverage and updates
- expands_facilitiesOct 9, 2026
In Oct '25, Last Energy, Inc. and Texas A&M University agree to build a 5 MW microreactor at the university’s RELLIS facility in Texas.
For institutional investors. Book with your work email.
Last 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.
Book a demoFor institutional investors. Book with your work email.
Frequently Asked Questions
Common questions about Last Energy's valuation, stock price, and market status.
Is Last Energy a public or private company?
Last Energy is a private company.
What is the current stock price of Last Energy?
Last Energy is a private company, so its shares have no public market price. Caplight tracks Last Energy's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Last Energy worth (valuation)?
Last Energy's valuation is estimated at $15.0M based on funding round data.
Can I buy Last Energy stock?
Last Energy shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was Last Energy's last funding round?
Last Energy's most recent funding round was Series C on December 16, 2025.
Who are the main investors in Last Energy?
Key investors in Last Energy include Astera Institute, GigaFund, First Round Capital.
Will Last Energy IPO soon?
No public IPO plans have been announced for Last Energy.
How can I track Last Energy secondary market activity?
Caplight tracks bids, offers, and trades in Last Energy's shares on secondary markets.