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Last Energy

Energy · Austin, United States · Founded 2020

Small modular nuclear reactors with full lifecycle services MoreLess

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.

Keywords: small nuclear reactors, clean technology, sustainability, global markets, industrial applications, scalability, rapid deployment, proven technology, end-to-end services, green fuels.

Company overview

Last Energy company information

The essential company record, classifications and operating signals in one place.

Status
Operational
Founded
2020
Headquarters
Austin, United States
Employees
68
Open positions
12
Dealroom signal
87.7
client focusb2btechnologyHardwaretechnologyDeep Techsub industryClean Energybusiness modelManufacturingsectorSustainable Development GoalssectorNuclear FissionsectorClimate TechsectorNIF defense security and resiliencesectorNIF Energy Security and Climate ChangesectorDT and LSsectorscience-basedindustryEnergy

Valuation & funding

Last Energy funding history

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
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
SERIES AOther financing Feb 2021 $20M $80M Undisclosed
SEEDOther financing Mar 2020 $4M $16M Undisclosed
Showing 4 recorded eventsUnlock the complete deal history →

Growth signals

Last Energy website traffic

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.

Latest monthly visits8.2K 3-month web change-36.9% 1-year team growth+13.3%
Monthly website visits45 observations · Nov 2022–Jul 2026
Hover or focus a point to see its exact monthly valueCompare with peers →

Comparisons

Last Energy compared with similar companies

Dealroom’s weighted taxonomy model identifies the closest operating peers. Company identity and context stay open; selected comparison metrics preview what is available in the platform.

Showing 8 of the closest matchesCompare every metric →

Talent graph

Last Energy's talent

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Team profiled 11 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 2 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Investors

9 investors on Last Energy's cap table

Sourced from Dealroom's funding and investor records.

Series A 2 investors entered at this stage
Gigafund
Autodesk Foundation
Series B+ 7 investors entered at this stage
Astera Institute
The Haskell Company
Ultranative
Woori Technology Investment
Galaxy Fund Management
AE Ventures
JAM Fund

Global footprint

Where Last Energy has talent and traffic

Workforce by country
4 countries with
team presence
🇺🇸 United States83.3%
🇬🇧 United Kingdom12.5%
🇷🇴 Romania2.1%
🇨🇦 Canada2.1%
4 countries shown

In the news

Latest news about Last Energy

Recent press, funding announcements, and product moves mentioning Last Energy — open to read from the original sources.

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Market sentiment

What the market is saying about Last Energy

An AI-synthesized read of the highest-engagement posts about Last Energy on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

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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