Top 100 Climate Tech Companies 2026

Developer of small modular nuclear reactors for AI data centers.

Proterra designs and builds zero-emission, battery-electric, fast-charge buses. Vehicles Sustaina...

Plasma reactor manufacturer for sustainable advanced materials and batteries.

Turnkey portfolio wide energy efficiency retrofits for the Fortune 500

Tech-led indoor farming platform for premium fresh produce.

Ulu Ventures is a seed stage venture capital firm that seeks to make investments in the enterpris...

Developer of hydrogen fuel cell systems for heavy-duty commercial vehicles targeting climate-neut...

Accelerating the build out of the renewable infrastructure needed to reach net zero

Biotech company developing sustainable biomaterials including mycelium leather and silk proteins ...

Develops ammonia-to-power systems converting ammonia into hydrogen to provide carbon-free power f...

CuspAI is a frontier AI company pioneering the discovery of breakthrough materials to power human...

Nuclear fusion energy company developing compact, low-cost fusion reactors using sheared-flow-sta...

Develops ion-exchange direct lithium extraction technology for lithium producers to enable faster...

Sun King manufactures and sells solar lanterns and solar home systems to off-grid and under-elect...

Our Next Energy (ONE) develops high-energy-density batteries for electric vehicles and grid stora...

Smart electric scooter and battery swapping infrastructure network for urban mobility.

Life-enhancing videos that support and uplift people facing cognitive changes and dementia.

Queen of Raw is a global marketplace w/AI-powered supply chain software to eliminate and monetize...

Smart electrical panel that adds intelligence and control to home energy management.

Platform for cities to optimize transit

Provides AI-native, space-powered weather intelligence and forecasting to enterprises and governm...

Tri Alpha Energy, now TAE Technologies, is a private nuclear fusion company developing aneutronic...

Montana Renewables produces renewable diesel, sustainable aviation fuel, and other biofuels from ...

Ohmium manufactures green hydrogen electrolyzers to decarbonize hard-to-abate industries.

Hydrogen-electric semi-truck developer and energy company.