YC Energy startups
55 Y Combinator companies in Energy, 16 of them from the last four batches. Its share of recent batches is 2%, up from 0.6% in the four batches before. About 21% are AI companies by YC’s tags.
- Signal
- Active
- Since 2025
- 20 vs 5 in 2023–24
- Acquired or public
- n/a
- Listed as inactive
- n/a
Share of each batch
Energy companies as a share of each YC batch since 2015.
Newest entrants
Too few Energy companies are five or more years old to show outcomes.
- Invertix F26 · Energy Superintelligence, AI that operates critical infrastructure
- Liquid Energy F26 · Self contained solar-powered AI inference modules: the NanoDC
- Micora F26 · Microgrids in a box built anywhere in days
Building in Energy?
Open problems and funding on Questd for climate tech.
- General Catalyst · Five Critical Industries
- Founders Fund · Hard Tech Investment Thesis
- Khosla Ventures · Breakthrough Technology Thesis
- Techstars · $220K ($20K for 5% + $200K uncapped MFN SAFE)
Energy companies, newest first
55 companies
- InvertixAI
Energy Superintelligence, AI that operates critical infrastructure
Fall 2026Energy8Munich, BY, Germany - Liquid EnergyAI
Self contained solar-powered AI inference modules: the NanoDC
Fall 2026Energy5Waterloo, ON, Canada - Micora
Microgrids in a box built anywhere in days
Fall 2026Energy4San Francisco, CA, USA - TalosAI
Predictive maintenance for power infrastructure.
Fall 2026Energy3Baltimore, MD, USA - Viraj AeroAI
Next generation gas turbines for data centers & aviation
Fall 2026Energy - Atomarine
Floating nuclear powered data centers at sea.
Summer 2026Energy2San Francisco, CA, USA - MaingenAI
Simulating Agents Running Industrial Companies
Summer 2026Energy2San Francisco, CA, USA - MarengoAI
AI-Native Engineering Firm designing Data Centers
Summer 2026Energy2San Francisco, CA, USA - Aernata
Making clean fuels out of CO2.
Spring 2026Energy2San Francisco, CA, USA - Apollo Atomics, Inc.
We make the most compact nuclear reactors
Spring 2026EnergyBoston, MA, USA - Madrone
Hyper-efficient coolers for data centers
Spring 2026Energy2San Francisco, CA, USA - Condor Energy
Software for enterprise energy procurement.
Winter 2026Energy3Paris, Île-de-France, France - RoboDock
Robots that run autonomous depots for autonomous fleets.
Winter 2026Energy4San Francisco, CA, USA - Squid
AI agents for power grid planning 🦑
Winter 2026Energy5London, England, United Kingdom - Terranox AI
The first AI-powered uranium discovery company
Winter 2026Energy2San Francisco, CA, USA - Voxel EnergyAI
Energy independent data centers with solar and repurposed batteries.
Winter 2026Energy3 - Zephyr Fusion
Powering tomorrow's industrial revolution in space
Fall 2025Energy2San Diego, CA, USA - NODI Energy
Distributed energy infrastructure unlocking grid power to data centers
Spring 2025Energy2London, England, United Kingdom - AstroAI
Power-ready land for AI data centers
Winter 2025Energy1New York City, NY, USA - Maritime Fusion
Fusion reactors for ships
Winter 2025Energy6San Francisco, CA, USA - Ionworks
Simulation software used by leading battery and automotive companies
Summer 2024Energy5Remote - Rewbi
A stealth mode startup.
Summer 2024Energy3San Francisco, CA, USA - Vista Power
Batteries and solar for $0 upfront to help businesses save money
Winter 2024Energy3San Francisco, CA, USA - Nectar
Manage energy cost & usage with AI for facility & sustainability teams
Summer 2023Energy7San Francisco, CA, USA
Sector is YC’s own label in its public company directory. See the methodology, every sector side by side, or browse open problems worth solving.