Last Energy

Raised $100M in a Series C round, announced 16 December 2025.

Round

Oversubscribed Series C led by Astera Institute to complete its PWR-5 pilot reactor (Texas A&M site) and move toward first commercial deployments.

Amount
$100M
Stage
Series C
Announced
16 December 2025
Lead
Astera Institute
Other investors
Gigafund, AE Ventures, JAM Fund, The Haskell Company, Ultranative, Galaxy Interactive, Woori Technology
Use of funds
Oversubscribed Series C led by Astera Institute to complete its PWR-5 pilot reactor (Texas A&M site) and move toward first commercial deployments.
Checked
Announced by the company

Company

Builds small modular nuclear reactors for industrial and data center customers

Based in
Washington, D.C., United States
Sector
Climate & Energy
Website
lastenergy.com ↗

Sources and links

Sources
Last Energy Raises $100M in Series C Funding - FinSMEs businesswire.com
Last Energy Raises $100M in Series C Funding - FinSMEs news.google.com
Last Energy Raises $100M in Series C Funding - FinSMEs pulse.bot
Website
lastenergy.com ↗
MediaBoost

Just raised?

MediaBoost gets your round in front of the press, future hires and your next investors.

Announce your round with MediaBoost