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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

Learn more about Sun Day, a nationwide tribute to the sun, solar energy, and other renewable energy taking place on September 21.

Sustainable CT Coffee Hour

Learn more about Charging Smart, a program that offers free technical assistance and certifications on electric vehicle readiness.

The IMPACT

Join us in welcoming our Sustainable CT Fellows.

Spring Certified Communities & Climate Leaders

Congrats to our Spring certified communities and Climate Leaders! - Learn more

Spring Into Summer 2025

Thank you for being part of a community committed to a sustainable Connecticut!

Free training, resources, tools

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?

Read the July edition of Actions & Impact, the Sustainable CT newsletter.

Join us for a special webinar on July 9th about Sun Day, a nationwide tribute to the sun, solar energy, and other renewable energy taking place on September 21.

Our July Coffee Hour is all about Charging Smart, a program that offers free technical assistance and certifications on EV readiness.

Climate Leader Designation

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

Learn More

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.

Get Inspired

Participating Communities

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

View Map

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.