Cromwell Solar

Cromwell Solar has been designing and installing solar systems across Kansas and the broader Midwest since 1982, making it one of the longest continuously operating residential solar practices anywhere in the United States. Headquartered at 613 Vermont Street in Lawrence, the company has completed more than 3,000 solar installations in Kansas, Missouri, and the surrounding region, and serves Kansas City, Wichita, Olathe, Topeka, and the smaller communities in between. Our research team verified Cromwell's Lawrence office, its NABCEP-certified team, and a roster that includes journeymen and master electricians on staff — a combined trade-license depth that is uncommon at this longevity tier and that materially shortens the interconnection workflow for Kansas homeowners.

What stood out to our research team is the breadth of in-house services tied to a clearly residential-first identity. Beyond standard rooftop PV, Cromwell installs home EV chargers, residential battery backup systems, and Generac standby generators, performs energy audits and retrofits, and runs an active solar repair, maintenance, and upgrade practice for systems originally installed by other companies. That post-install service depth is one of the most under-rated qualitative signals our research team looks at, because it indicates the company expects to be reachable years after a sale and has the operational discipline to support an installed base rather than just selling new systems.

Prospective customers should know that Cromwell's longevity and breadth are paired with a comparatively understated marketing footprint. Reasonable diligence questions include confirming the specific NABCEP individual credentialed for the homeowner's installation, pinning down Evergy or rural-electric-cooperative interconnection experience for the project's county, and asking for representative system production data from similar nearby Kansas installs. The combination of 40-plus years of Kansas operating history, 3,000-plus installations, a Lawrence headquarters, in-house master electricians and NABCEP-certified installers, and a fully residential-and-commercial PV business model places Cromwell Solar firmly in the top tier of Kansas options for 2026.

With a composite score of 75.0 out of 100, Cromwell Solar holds the second-ranked position in Kansas for 2026.