GRID Alternatives is a national 501(c)(3) nonprofit organization based in Oakland, California. Founded by Erica Mackie and Tim Sears in 2004, it installs solar power systems and provides job training for underserved communities. The organization operates in the United States, Mexico, Nicaragua, and Nepal. It has expanded its work across California, Colorado, the Mid-Atlantic region, and tribal communities nationwide. GRID Alternatives is a leading voice in low-income solar policy and the nation’s largest nonprofit solar installer, offering single-family, multifamily, and community solar installation services, project development, and technical assistance. The organization also provides multiple levels of workforce development and service learning opportunities, from volunteerism to in-depth solar training and paid internships.