Environment & Sustainability

The City of Sammamish is committed to protecting its natural environment and promoting sustainability through initiatives aimed at reducing the city's carbon footprint and preserving its unique natural resources.

Energy Smart Eastside: Heat Pump Campaign

Everyone in our community deserves the benefits of a healthy, energy-efficient and comfortable home. Energy Smart Eastside is dedicated to helping residents access the benefits of heat pumps. Click the image above to visit Energy Smart Eastside's website and learn more.

Regional Partnerships

King County Cities Climate Collaboration 

The City of Sammamish is part of the King County-Cities Climate Collaboration (K4C), an innovative partnership between King County and over 20 additional partners – including cities and the Port of Seattle - to coordinate and enhance the effectiveness of local climate and sustainability action. 

Sammamish joined the K4C in 2015 and signed the original K4C Joint Commitments that same year. The K4C Joint Commitments were refreshed in late 2019, and Sammamish also signed the updated K4C Joint Commitments. K4C partners work together to reduce harmful greenhouse gas emissions by sustainably increasing mobility, investing in renewable energy, promoting clean energy use in buildings and vehicles, and expanding farm and forest protection. 

• Learn more about the benefits of heat pumps, heat pump water heaters, and electric induction cooking, plus available incentives and tax credits through K4C's partnership with the Switch Is On.”

Eastside Climate Partnership

The Eastside Climate Partnership (ECP) formed in 2023 and is made up of the Cities of Bellevue, Issaquah, Kirkland, Mercer Island, Redmond, and Sammamish. The City of Sammamish signed the Interlocal Agreement in 2024. The ECP works collaboratively to create programs that reduce regional sources of climate pollution and advance collective sustainability. Areas of joint programming by two or more participating ECP jurisdictions include: 

• A regional, coordinated heat pump program through the Energy Smart Eastside program. This program educates residents on the benefits of heat pumps and provides incentives for residential households, affordable housing, and adult family homes. The program plans to expand to additional electric appliance incentives in the future. 
• Preparation of greenhouse gas emissions inventories using standardized methodology for our communities and municipal operations. These inventories support our communities in understanding where progress has been made and provides guidance for where to focus climate action efforts in the future.  
• The Eastside Climate Challenge, which provides an opportunity for community members to track their own actions and engage their neighbors in support of progress towards regional climate goals. 
• Information sharing on municipal fleet electrification progress and use-case scenarios in addition to coordination on local and regional electric vehicle charging stations.