The U.S. Department of Energy Solar Energy Technologies Office (SETO) supports early-stage research and development to improve the affordability, reliability, and domestic benefit of solar technologies on the 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. Through competitive solicitations and attentive project management, the solar office strategically addresses critical research gaps, ensuring the solar industry has the technological foundations necessary to continue growth and preserve American energy choice, independence, and security.