28 Best Carbon Offset Startups to Watch in 2025

The Definitive Seedtable Ranking of Carbon Offset Startups

We track 71,000+ companies and rank them dynamically using our Seedtable Score – a score that uses quantitative and qualitative data points to signal the momentum behind a company. We then monitor the list manually leveraging our expertise as founders and investors.

There are 29 start-ups with an aggregate funding of $1.6b. The average funding per company in this subset is $57.7m.

Last update to the database: Feb 18, 2025. See changelog.

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4

Funding Rounds

$74.3m

Money raised

Pachama is a company estimating carbon storage in forests and predicting future deforestation or potential for forest restoration with the use of satellite images.

1

Funding Rounds

South Pole is a Zurich-based climate solutions company offering sustainable project development services in order to provide carbon offset credits to businesses and organizations.

3

Funding Rounds

$5.3m

Money raised

Minimum is a carbon tracking and carbon offsetting company

Location:

Key people:

10

Funding Rounds

$876.0m

Money raised

Climeworks is a clean technology company that has developed technology for carbon dioxide (CO2) capture from ambient air. It was founded in 2009 and is located in Zurich, Switzerland.

Location:

Key people:

4

Funding Rounds

$12.4m

Money raised

Nori is a company that hosts an open-source, blockchain-based market for purchasing carbon offsets.

Location:

Key people:

2

Funding Rounds

$1.7m

Money raised

Wren provides a subscription-based web application to offset an individuals' carbon footprint.

7

Funding Rounds

$151.6m

Money raised

A carbon sequestration technology and bioplastics company based in Huntington Beach, California, founded in 2003, that uses their technology to capture carbon from greenhouse emissions for production of bioplastics.

3

Funding Rounds

$6.6m

Money raised

Treefera is a UK company developing an AI-powered data platform to map trees globally for carbon offsetting and conservation.

Location:

Key people:

9

Funding Rounds

$119.5m

Money raised

Carbon Engineering is building technologies to capture CO2 directly from the atmosphere, and to use that CO2 in the synthesis of clean transportation fuels that displace crude oil.

7

Funding Rounds

$5.0m

Money raised

NovoNutrients produce microbes that break down industrial emissions of carbon dioxide and reassemble them into aquaculture feed.

Key people:

1

Funding Rounds

$3.3m

Money raised

Muir AI is a climate technology company that offers services and solutions to reduce carbon emmissions that result from the supply chain.

Location:

Key people:

4

Funding Rounds

$105.0m

Money raised

Solidia Technologies is a Piscataway, New Jersey-based technology company offering solutions for using CO2 for manufacturing construction and industrial products.

4

Funding Rounds

$6.9m

Money raised

EnergySage is a Boston-based company offering solar power product comparison and carbon offset programs.

Location:

Key people:

2

Funding Rounds

Native Energy is a Burlington, Vermont-based company that provides carbon offsetting solutions for businesses.

2

Funding Rounds

$4.0m

Money raised

3Degrees is a San Francisco-based provider of carbon offset and renewable energy services and solutions.

Key people:

7

Funding Rounds

$13.8m

Money raised

Pond Technologies is a Markham-based developer of algae based carbon capture technologies which processes their algae production into nutraceuticals, animal feed, and petroleum derivatives.

1

Funding Rounds

$5.8m

Money raised

TerraPass is a San Francisco-based nonprofit organization offering projects for environmental cleanup and carbon offset.

1

Funding Rounds

$100.0m

Money raised

Green Mountain Energy is an Austin, Texas-based renewable energy company offering services for carbon offset.

1

Funding Rounds

Ecoact is a Paris-based company founded in 2005 by Gerald Maradan.

1

Funding Rounds

$3.0m

Money raised

EcoCart is an e-commerce plugin for merchants to offer carbon neutral orders and a Chrome extension for shoppers looking to lower their carbon footprint.

Location:

Key people:

3

Funding Rounds

$28.8m

Money raised

Supercritical is a carbon removal marketplace

1

Funding Rounds

$5.2m

Money raised

Tool to optimize cloud workloads while reducing emissions and waste.

1

Funding Rounds

Carbonclick is an Auckland-based carbon calculator and carbon offset company for individuals and corporations.

1

Funding Rounds

$75.0m

Money raised

WGL Energy is a Washington, D.C.-based energy and natural gas provider engaged in carbon offset activities.

1

Funding Rounds

$4.5m

Money raised

Patch helps clients make their businesses carbon neutral .

1

Funding Rounds

ClimatePartner is a Munich-based carbon offset company.

Industries:

Location:

1

Funding Rounds

Climate Friendly is an Australia-based carbon offset consulting firm providing carbon offset projects for corporations and individuals.

Location:

Key people:

1

Funding Rounds

$7.0m

Money raised

Carbon finance company providing offtake and capital solutions for projects that avoid, capture, or remove carbon emissions.

Industries:

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