Affordable energy loans and rebates. That's a win-win.”

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Delaware Sustainable Energy Utility (DESEU) is who we are—a nonprofit 501(c)(3) organization created by the State of Delaware. Through our many Energize Delaware programs, we help residents, businesses, farmers, schools, religious organizations, nonprofits, hospitals and local governments save money. We do it by providing access to high-efficiency heating, cooling, ventilation and insulation technologies at little or no cost.

Making Homes More Comfortable and Affordable.

Our programs help improve your home’s coziness and safety while reducing its energy consumption. In-home energy audits identify exactly what’s needed—from new insulation, windows or doors to higher-efficiency appliances and HVAC equipment. All to make your home more comfortable and affordable.

See our residential programs

Improving Bottom Lines For Businesses, Government and Nonprofits.

We also help companies, governments, nonprofits and faith-based organizations save energy and money. We provide commercial-grade energy audits and recommendations, revolving loan and energy investment funds, grants for clean solar and geothermal energy, and other initiatives.

See our nonresidential programs

Our Valued partners.

Energize Delaware partners with utilities, public-advocacy and community-action groups, and other organizations. Together, we offer our programs to people statewide to help protect against volatile energy prices, reduce the environmental impact of energy production and lead Delaware to a sustainable energy future.

Our Partners

The latest on energize delaware news and initiatives.

December 11, 2019

Energize Delaware is pleased to announce they have recently hired James Purcell to be the Grant Manager for the new Empowerment Grant Program.  The Empowerment Grant is being financed with $4 million in merger settlement funds approved by the Delaware Public Service Commission’s authorizing of the Delmarva Power and Exelon merger agreement.  As the managing…

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November 25, 2019

The 6th Annual Delaware Energy Conference was held on October 24, 2019 at the Hilton Wilmington/Christiana in Newark, DE.  Over 115 attendees heard from an array of guest speakers and interesting panel discussions at the event hosted by the Delaware Chapter of the Energy Services Coalition (ESC). In October 2012, Delaware became the 28th ESC…

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