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

Watch Video

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.

September 10, 2020

The Delaware Sustainable Energy Utility (“DESEU”) is currently seeking proposals in response to a Request for Proposal (“RFP”) from qualified organizations or individuals interested in providing assistance in conducting an impact evaluation of the Energy Assessment Program for Non-profit Organizations and Local Government Agencies (“Program”). The impact evaluation would provide analysis for the 2016-2019 program years. DESEU…

Read More
August 24, 2020

Have you ever thought about having an online store that sells only energy efficient, environmentally friendly home appliances at a discounted price? Join us in creating the Home Efficiency Online Store together.  Where do you usually go shopping for home appliances? Maybe Home Depot, Lowe’s, Sears, or Costco. Will your choice depend on the discount or financing offered by each…

Read More