You may know us as the Delaware Sustainable Energy Utility (DESEU)

We operate under the name Energize Delaware and they’re one and the same. We’re a 501(c)(3) nonprofit organization offering programs and resources to help residents and businesses save money through clean energy and efficiency. Many of our sustainable energy solutions are available at little or no cost.

The DESEU was created in 2007 by the state of Delaware to foster a sustainable energy future. We were the first in the U.S. to launch a model like this, and today, it’s inspiring communities around the world. In 2019, we rebranded as Energize Delaware to bring all programs under one recognizable, trusted name — one that reflects the energy, innovation, and forward momentum behind everything we do.

Energize Delaware helps residents and businesses across the state improve energy efficiency, lower energy costs, and support a healthier environment. From upgrading outdated equipment to securing financing for energy improvements or taking a whole-building approach, we offer tailored programs to meet your specific needs.

Beyond saving money and creating jobs, our programs also empower commercial, industrial, and other nonresidential sectors—including municipalities, universities, schools, and hospitals—to play an active role in building a more sustainable energy future for Delaware.

We’re proud to call Delaware home, as it’s a state that embraces the dual benefits of energy efficiency and clean, renewable sources like solar and wind. These investments help reduce carbon emissions, manage long-term energy costs, and protect our natural resources for future generations.