Last Energy

Last Energy is an American developer and operator of micro-modular nuclear power plants, founded in 2019 in Washington, D.C. by Bret Kugelmass as a commercial spinout of the Energy Impact Center. Its flagship PWR-20 is a 20 MWe pressurized water reactor assembled from a few dozen factory-made, steel-encased modules that ship to site and are installed rather than constructed in place. Last Energy sells power rather than reactors: it designs, finances, owns and operates plants under long-term power purchase agreements for energy-intensive customers including data centers, metals, chemicals, cement, pulp and paper, and food and beverage. The company has announced projects in Texas, South Wales, Poland and Romania, entered nuclear site licensing in the United Kingdom, partnered with Texas A&M and DP World, and raised roughly $164M across a $40M Series B and a $100M Series C. Last Energy publishes a marketing site and a gated customer/whitepaper portal, but no public developer program, API, or machine-readable interface.

Last Energy is profiled on the APIs.io network. Tagged areas include Company, Energy, Nuclear Energy, Small Modular Reactors, and Electricity.

Last Energy’s developer surface includes FAQ, support, product news, signup flow, and 17 more developer resources.

🌐 Visit website 📡 Source on GitHub
15.2/100 emerging ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
0 APIs
CompanyEnergyNuclear EnergySmall Modular ReactorsElectricityPower GenerationData CentersIndustrialClean EnergyInfrastructure

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 15.2/100 · emerging
Contract Quality 0.0 / 25
Developer Ergonomics 0.9 / 20
Commercial Clarity 6.8 / 20
Operational Transparency 0.0 / 13
Governance 0.0 / 12
Discoverability 6.9 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/last-energy: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Last Energy Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

SignUp
SignUp
 Login
Login

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Operate 4

Status, limits, changes, and where to get help

FAQ
FAQ
 Support
Support
 Contact
Contact
 PressReleases
PressReleases

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 6

The organization behind the API

Website
Website
 About
About
 News
News
 Careers
Careers
 LinkedIn
LinkedIn
 Twitter
Twitter

Other 5

Properties that don't map to a standard resource type

Technology
Technology
 Podcast
Podcast
 WhitePaper
WhitePaper
 Wikipedia
Wikipedia
 Profile
Profile

Source (apis.yml)

apis.yml Raw ↑ 
aid: last-energy
name: Last Energy
description: 'Last Energy is an American developer and operator of micro-modular nuclear power plants, founded in 2019 in
  Washington, D.C. by Bret Kugelmass as a commercial spinout of the Energy Impact Center. Its flagship PWR-20 is a 20 MWe
  pressurized water reactor assembled from a few dozen factory-made, steel-encased modules that ship to site and are installed
  rather than constructed in place. Last Energy sells power rather than reactors: it designs, finances, owns and operates
  plants under long-term power purchase agreements for energy-intensive customers including data centers, metals, chemicals,
  cement, pulp and paper, and food and beverage. The company has announced projects in Texas, South Wales, Poland and Romania,
  entered nuclear site licensing in the United Kingdom, partnered with Texas A&M and DP World, and raised roughly $164M across
  a $40M Series B and a $100M Series C. Last Energy publishes a marketing site and a gated customer/whitepaper portal, but
  no public developer program, API, or machine-readable interface.'
url: https://raw.githubusercontent.com/api-evangelist/last-energy/refs/heads/main/apis.yml
image: https://cdn.prod.website-files.com/637baf1c933a04670d122e32/6539171974d87fce48057702_Home.jpg
x-type: company
x-source: harvest:secondary-market
x-tier: stub
x-tier-reason: harvest
specificationVersion: '0.20'
created: '2026-08-01'
modified: '2026-08-01'
x-enrichment:
  date: '2026-08-01'
  status: minimal
  artifacts_added: 3
  pass: local-v1
tags:
- Company
- Energy
- Nuclear Energy
- Small Modular Reactors
- Electricity
- Power Generation
- Data Centers
- Industrial
- Clean Energy
- Infrastructure
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/last-energy-domain-security.yml
- type: LLMsTxt
  url: llms/last-energy-llms.txt
- type: Website
  url: https://www.lastenergy.com/
- type: About
  url: https://www.lastenergy.com/about
- type: Technology
  url: https://www.lastenergy.com/technology
- type: FAQ
  url: https://www.lastenergy.com/faq
- type: Support
  url: https://www.lastenergy.com/contact
- type: Contact
  url: https://www.lastenergy.com/contact
- type: News
  url: https://www.lastenergy.com/news-press-categories/news
- type: PressReleases
  url: https://www.lastenergy.com/news-press-categories/press-release
- type: Podcast
  name: Titans of Nuclear
  url: https://www.lastenergy.com/titansofnuclear
- type: WhitePaper
  name: Decarbonizing Data Centers
  url: https://www.lastenergy.com/whitepaper/decarbonizing-data-centers
- type: Careers
  url: https://www.lastenergy.com/careers/jobs
- type: SignUp
  url: https://www.lastenergy.com/sign-up
- type: Login
  url: https://www.lastenergy.com/log-in
- type: TermsOfService
  url: https://www.lastenergy.com/privacy-terms
- type: PrivacyPolicy
  url: https://www.lastenergy.com/privacy-terms
- type: LinkedIn
  url: https://www.linkedin.com/company/lastenergy
- type: Twitter
  url: https://x.com/lastenergy
- type: Wikipedia
  url: https://en.wikipedia.org/wiki/Last_Energy
- type: Profile
  name: Forge Global secondary market listing
  url: https://forgeglobal.com/last-energy_stock/