Clean Energy Solutions Promise Energy develops clean energy solutions for multifamily, commercial and municipal projects. We’re a fully integrated design, finance, and installation firm with extensive experience in all aspects of solar, storage, and energy efficiency solutions for the built environment. Our team includes general contracting, professional engineering, and solar finance experts with decades of experience in commercial and multifamily construction, specializing in energy efficiency retrofits, and solar PV projects. Promise Energy is one of the leading providers of solar solutions for affordable housing in California. We have designed and installed solar systems for over 5000 units of affordable housing in California, and have become a trusted partner for many leading affordable housing developers. We also provide energy consulting services to portfolios of multifamily housing, design and engineering services, as well as solar consulting services for clients including the City of Los Angeles Convention Center and Department of Transportation and more.