Solar Alliance Southeast

Solar Alliance Southeast is a dedicated solar contractor headquartered at 3709 Martin Mill Pike in Knoxville, and unlike most of the other candidates we reviewed in Tennessee, photovoltaics is not a side service line for this company, it is the entire business. The Southeast subsidiary was incorporated in Tennessee in August 2015 and operates as the regional installation arm of Solar Alliance, a publicly listed clean-energy contractor that trades on the TSX Venture Exchange under the ticker SOLR. That dual structure is unusual at this market level and means the company files audited financials, which gave our research team more visibility into ongoing operations than is typical for an installer of this size.

What earned Solar Alliance the third-ranked spot for us is the credentialing and the residential scope. The company is staffed by engineers and installers accredited by the North American Board of Certified Energy Practitioners and operates as a fully licensed Tennessee general contractor with a NABCEP-certified design team. Service offerings cover residential rooftop solar, the company's pre-engineered Sunbox residential and small-commercial systems, battery energy storage, EV charging, and a Powershed solar-powered equipment charging station, alongside larger commercial, community-scale, and utility work. Solar Alliance has publicly reported securing more than seven million dollars in grants and incentives for clients across its Tennessee and Kentucky service area, which suggests genuine fluency with the Tennessee Valley Authority Dispersed Power Production program and federal Investment Tax Credit stacking that homeowners depend on.

Prospective customers should weigh two flags our team noted plainly. First, the Better Business Bureau lists the company as Not Rated rather than accredited, meaning the BBB has not gathered enough information to issue a letter grade despite a file dating to 2020. Second, the company's marketing leans noticeably toward community and commercial solar, so residential customers should confirm crew availability and project-management capacity before signing, and ask for recent Knoxville-area residential references and equipment specifications since panel and inverter brands are not published.

With a composite score of 69.4 out of 100, Solar Alliance Southeast holds the third-ranked position in Tennessee for 2026.