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Last Energy
Small modular nuclear reactors with full lifecycle services
About Last Energy
Last Energy is a pioneering company in the field of small nuclear power plants, providing comprehensive services for the entire lifecycle of mini water-cooled reactors. The company focuses on markets that are committed to clean technology and have public support for nuclear power. These markets span across Europe, Africa, Southeast Asia, and Latin America.
Last Energy's primary clients are countries and industries looking to expand their nuclear power capabilities to meet sustainability goals. The company’s small nuclear reactors can produce both heat and electricity, making them versatile for various industrial applications. This includes not only generating clean electricity but also providing clean air, clean water, combined heat and power, and even facilitating the production of green fuels and carbon-negative materials.
The business model of Last Energy revolves around leveraging existing, proven nuclear technology that is already in use in hundreds of power plants worldwide. By focusing on standardization and simplifying systems, the company aims to make nuclear power scalable and rapidly deployable. This approach helps in reducing costs and speeding up the deployment process, making nuclear power more accessible and practical for a wider range of applications.
Last Energy makes money by offering a full suite of services that cover the entire development cycle of nuclear power plants. This includes everything from initial planning and design to construction, operation, and maintenance. By providing end-to-end solutions, the company ensures a seamless and efficient process for its clients, which in turn drives revenue.
In summary, Last Energy is at the forefront of small nuclear power plant development, serving global markets focused on clean technology. The company’s innovative approach and comprehensive service offerings make it a key player in the push towards sustainable and clean energy solutions.
Source: Dealroom company dataAt a glance
- Status
- Operational
- Founded
- 2020
- Headquarters
- Austin, United States
- Employees
- 68
- Open positions
- 12
- Dealroom signal
- 87.7/100
- Industry
- Energy
- Sub-industry
- Clean Energy
- Sector
- Energy, Sustainable Development Goals, Nuclear Fission, Climate Tech, NIF defense security and resilience, NIF Energy Security and Climate Change, DT and LS, science-based
- Technology
- Hardware, Deep Tech
- Business model
- Manufacturing
- Client focus
- b2b
Knowledge graph
More headlines
Funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| SERIES COther financing | Dec 2025 | $100M | $400M | The Haskell Company · Ultranative · Woori Technology Investment · Galaxy Fund Management | ↗ |
| SERIES BOther financing | Aug 2024 | $40M | $160M | Autodesk Foundation · Gigafund | ↗ |
Growth signals
Latest recorded traffic for Last Energy is 8.2K monthly website visits, down 36.9% over the last three months. Last Energy's team grew 13.3% over the past year.
Open positions
Similar companies
Company identity and context are open; selected comparison metrics preview what is available on the platform.
Investments and acquisitions
Recent portfolio relationships for companies that also act as investors or acquirers.
Investors
From Dealroom's funding and investor records, grouped by the round each investor first entered.
Series A2 investors entered at this stage
Gigafund
Autodesk Foundation
Series B and later7 investors entered at this stage
Astera Institute
The Haskell Company
Ultranative
Woori Technology Investment
Galaxy Fund Management
AE Ventures
JAM Fund
Source: Dealroom Talent Intelligence.
Global footprint
team presence
Market sentiment
An AI-synthesised read of the highest-engagement posts about Last Energy on X, ranked by likes and reposts, corporate channels excluded.
Reading the room on X — pulling top posts and synthesizing themes…
Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
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