Momentus
Public
What they do:
The space infrastructure services company
Quick facts:
HQ: San Francisco, CA, United States
Top Climate & Energy Startups in the United States
This list has 236 startups and was last updated on Oct 15, 2026. 26 of them are hiring right now. Biggest hubs: San Francisco (90), New York (15), and Los Angeles (12). Largest teams: Cruise, Zeitview, and Solugen. Latest round: Circularity Fuels raised $8.79M (Oct 14, 2026).
236 startupsPage 1 of 7
Oklo
Public
What they do:
Emission free, always on power from advanced fission power plants.
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Inspection software for renewable energy & sustainable infrastructure
Quick facts:
HQ: Los Angeles, CA, United States
What they do:
Decarbonizing the chemicals industry.
Quick facts:
HQ: Houston, TX, United States
Remi
Hiring
What they do:
Simplifying roofing for homeowners, roofers and enterprises.
Quick facts:
HQ: Lehi, UT, United States
What they do:
Building the world's first fusion power plant
Quick facts:
HQ: Seattle, WA, United States
Gridware
Hiring
What they do:
Protecting the grid today, preparing the grid for tomorrow
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Making car ownership and management frictionless.
Quick facts:
HQ: Nashville, TN, United States
What they do:
Building a world where alternative proteins are no longer alternative.
Quick facts:
HQ: Washington, DC, United States
What they do:
Sunrun for the developing world
Quick facts:
HQ: New York, NY, United States
What they do:
Raptor Maps builds software to manage the solar PV lifecycle.
Quick facts:
HQ: Boston, MA, United States
What they do:
Autonomous electric airplanes
Quick facts:
HQ: San Francisco, CA, United States
Shepherd
Hiring
What they do:
Modernizing commercial insurance
Quick facts:
HQ: San Francisco, CA, United States
What they do:
We verify global supply chains for issues like child slavery and…
Quick facts:
HQ: New York, NY, United States
Albedo
Hiring
What they do:
Full-stack VLEO satellite missions
Quick facts:
HQ: Denver, CO, United States
What they do:
Cheese and dairy products from plant-derived dairy proteins
Quick facts:
HQ: San Francisco, CA, United States
What they do:
The lightest electric aircraft motors in the world.
Quick facts:
HQ: Denver, CO, United States
What they do:
Lygos (W16) built and commercialized sustainable, high-performance…
Quick facts:
HQ: San Francisco, CA, United States
Paces
Hiring
What they do:
Agentic AI for Power Projects and AI Infrastructure
Quick facts:
HQ: New York, NY, United States
Reach
Hiring
What they do:
Long range, wireless energy distribution that scales
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Heart makes electric airplanes with an all-electric range of 250 miles
Quick facts:
HQ: Los Angeles, CA, United States
What they do:
Enterprise software to quantify cost-effective decarbonization…
Quick facts:
HQ: San Francisco, CA, United States
What they do:
We make EV charging as simple and reliable as LED lights
Quick facts:
HQ: San Francisco, CA, United States
Living Carbon
Hiring
What they do:
maximizing biomass on low quality land
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Modular carbon capture
Quick facts:
HQ: Detroit, MI, United States
What they do:
All-electric seagliders for fast, affordable regional transportation
Quick facts:
HQ: North Kingstown, RI, United States
What they do:
Next-gen ingredients to decarbonize consumer products, starting w/…
Quick facts:
HQ: New York, NY, United States
What they do:
Predictive battery management software for electrified fleets
Quick facts:
HQ: San Francisco, CA, United States
Charge Robotics
Hiring
What they do:
Robots that build solar farms
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Engineering the future of chemistry for natural resource extraction
Quick facts:
HQ: Austin, TX, United States
What they do:
Advano is a battery technology company that improve the longevity of…
Quick facts:
HQ: New Orleans, LA, United States
What they do:
We use solar and wind power to make zero net carbon electrofuels
Quick facts:
HQ: Santa Cruz, CA, United States
What they do:
Water risk mitigation for industrial sites
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Underwater robotic vehicles that collect battery metals responsibly
Quick facts:
HQ: Los Angeles, CA, United States
dili
Hiring
What they do:
Automating Compliance for Construction
Quick facts:
HQ: New York, NY, United States
Starcloud
Hiring
What they do:
Data centers in space
Quick facts:
HQ: Seattle, WA, United States
Questions and answers
How many startups are on this list?
There are 236 startups on this list, last updated on Oct 15, 2026.
Which of them are hiring?
26 of them are hiring right now, including Remi, Gridware, and Shepherd.
Which of them have the largest teams?
By team size: Cruise (3,000 employees), Zeitview (200 employees), and Solugen (200 employees).
Which of them raised money recently?
Latest rounds: Circularity Fuels — $8.79M Equity (Oct 2026), Elemental Nuclear Energy — $5.47M Debt (Oct 2026), and Innoven Energy — $18.1M Equity (Oct 2026).
Where are they based?
The biggest hubs are San Francisco (90), New York (15), and Los Angeles (12).