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Submissions for the 2025 fall certification cycle are due on Tuesday, August 19, by 12:00 p.m. ET - Learn how to apply

Bill McKibben, author, educator, and tireless advocate for the earth and our environment joins us to discuss his latest initiative: Sun Day

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We have funds and coaching to support sustainability projects in your community.

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We’re eager to help your community become more sustainable - Learn more

Actions & Impact

Stay up to date with the latest and greatest Sustainable CT news - Learn more

What's New?

The July episode of the IMPACT is now available: Bill McKibben on Sun Day.

View the recording of our July Coffee Hour - all about Charging Smart, free technical assistance for EV readiness.

The Fall Certification Deadline is fast approaching: AUGUST 19. You can do this! Review how to submit an application here. Have questions? Contact us.

Climate Leader Designation

Celebrating municipalities that are reducing harmful greenhouse gas emissions while saving money, improving public health, and building community.

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Community Match Fund

A fast, flexible program to support sustainability initiatives throughout Connecticut. Get inspired to start your own Community Match Fund campaign by viewing our flipbook of recent projects.

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Participating Communities

View the map of Connecticut’s registered communities. Search the completed actions database.

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Certification Program Statistics

If your municipality is not yet registered with Sustainable CT, or if your town is registered but has not yet considered working towards certification, please contact us. We’d be happy to speak with you, provide any information you may need, and discuss next steps.