The U.S. Department of Energy Solar Energy Technologies Office (SETO) supports early-stage research and development to improve the flexibility and performance of solar technologies that contribute to a reliable and resilient U.S. electric grid. The office invests in innovative research efforts that securely integrate more solar energy into the grid, enhance the use and storage of solar energy, and lower solar electricity costs.

SETO plays a crucial role in the growth of U.S. solar energy, partnering with hundreds of private companies, universities, state and local governments, nonprofit organizations, and national laboratories to fund cooperative research, development, demonstration, and deployment projects that drive down the cost of solar electricity. Below are success stories from just a few of the several hundred projects. Select a project to learn more.

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Commercialized Direct Current Optimizer

New Low-Cost Cybersecurity Device

Affordable Plug-and-Play Device

Solar Savings for More Americans

SolSmart Recognizes 300th Community

Precise Solar Performance Measurement