Who Funds Cleantech Startups?

Discover 14 funding sources for Cleantech startups: VC funds, accelerators, and free resources.

1
VC Funds
7
Accelerators
6
Free Programs
$1.2M
Avg Check Size

Cleantech Funding Landscape

Market Overview

The cleantech sector has 14 active funding sources globally, with funding trends showing Data from SEC filings and verified sources.

Competition level is Emerging, making it moderately competitive with good opportunities for quality startups in this space.

Success Factors

Strong technical team with domain expertise
Clear market validation and traction metrics
Defensible technology or business model
Large addressable market opportunity
Experienced advisors and mentors

Funding Strategy

Recommended Approach

  • • Start with free resources to minimize operational costs
  • • Apply to industry-specific accelerators for mentorship
  • • Build relationships with VCs before you need funding
  • • Focus on funds with relevant portfolio companies

Timing Considerations

  • • Allow 3-6 months for fundraising process
  • • Accelerator applications have seasonal deadlines
  • • VC funding often correlates with market cycles
  • • Free programs can be accessed year-round

VC Funds Investing in Cleantech

Brooklyn Bridge Ventures

Global

Multiple stages stage focus

$1.2M
Check Size

Investment Focus

Enterprise SoftwareConsumerHealthTechCleanTech
Learn More →
View All Cleantech VC Funds

Cleantech Accelerator Programs

Elemental Impact

Multiple locations

$1000K
for 6% equity

Program Focus

CleanTechClimateEnergySustainability
Next Deadline: 2024-03-15Apply Now →

Plug and Play Energy

Multiple locations

$100K
for 6% equity

Program Focus

CleanTechClimateEnergySustainability
Next Deadline: 2024-03-15Apply Now →

Cleantech Open

Multiple locations

$0K
for 6% equity

Program Focus

CleanTechClimateEnergySustainability
Next Deadline: 2024-03-15Apply Now →

Greentown Labs

Multiple locations

$0K
for 6% equity

Program Focus

CleanTechClimateEnergySustainability
Next Deadline: 2024-03-15Apply Now →

Imagine H2O

Multiple locations

$0K
for 6% equity

Program Focus

Water TechCleanTechSustainability
Next Deadline: 2024-03-15Apply Now →

MassChallenge

Multiple locations

$0K
for 6% equity

Program Focus

AllHealthTechAICleanTechFintech
Next Deadline: 2024-03-15Apply Now →

Rice Alliance Clean Energy Accelerator

Multiple locations

$0K
for 6% equity

Program Focus

CleanTechClimateEnergySustainability
Next Deadline: 2024-03-15Apply Now →
View All Cleantech Accelerators

Free Resources for Cleantech Startups

AWS

easy

Cloud Credits

$100K
Learn More →

Google Cloud

medium

Cloud Credits

$200K
Learn More →

Microsoft Azure

medium

Cloud Credits

$150K
Learn More →

GitHub

easy

Developer Tools

$50K
Learn More →

Stripe

easy

Payments

Waived fees
Learn More →

HubSpot

medium

Marketing Growth

$30K
Learn More →
View All $2.5M in Free Resources

Funding Preparation Checklist

Before You Apply

Comprehensive pitch deck (10-12 slides)
Financial projections and unit economics
Product demo or prototype
Market research and competitive analysis
Team backgrounds and advisory board
Intellectual property documentation
Customer testimonials or letters of intent
Legal structure and cap table

Cleantech-Specific Tips

Market Size: Clearly articulate the cleantech market opportunity and your addressable market size.
Technical Depth: Demonstrate deep understanding of cleantechchallenges and your technical solution.
Traction Metrics: Show relevant KPIs for cleantech startups, such as user adoption or revenue growth.

Frequently Asked Questions

How competitive is funding for Cleantech startups?

Cleantech startup funding is Emerging, with 1 active VC funds and 7 accelerator programs globally. The average check size is $1.2M, requiring strong differentiation and traction.

What do Cleantech investors look for?

Cleantech investors typically prioritize strong technical team with domain expertise and clear market validation and traction metrics, along with strong technical teams and clear market validation. Domain expertise in cleantechis often crucial for gaining investor confidence.

Should I apply to multiple funding sources simultaneously?

Yes! Most successful Cleantech startups apply to multiple funding sources. Start with free resources to reduce costs, apply to relevant accelerators for mentorship and initial funding, then approach VCs for larger rounds. Having multiple options creates leverage in negotiations.

Related Resources

Other Industries

Who Funds Artificial Intelligence? →Who Funds Machine Learning? →Who Funds Deep Tech? →

More Resources

Startup Funding Guides →Pitch Deck Templates →Complete Investor Database →

Last updated: 3/10/2026 | Data aggregated from VC databases, accelerator programs, and startup resources |About our methodology