Missouri is two solar markets wearing one name. On the Kansas City side, Evergy credits exports one-to-one at retail, forgiving math that tolerates a generous design. On the St. Louis side, Ameren settles surplus at avoided cost, 5.39¢ in summer and 3.92¢ in winter, roughly a third of retail, and punishes oversizing accordingly. The three companies below work the western half of that split and its Kansas border country, and each brings a different kind of proof that it will still be here when the warranty matters.
Good Energy Solutions, Cromwell Solar and 1 Source Solar are the three vetted installers serving Missouri in our network. Before comparing any of them, make every bidder name your utility in the projection: Evergy math on an Ameren house overstates export value roughly 3-fold, and it is the most common Missouri quoting error we see.
Our Top 3 Solar Companies in Missouri
Each company below was verified this week on its own published record and working website. Rankings are never sold.
Good Energy Solutions
Founded in 2007 by Kevin and Shana Good and named Best Solar Provider in Kansas City for 2026, with engineers, craftsmen and a licensed electrical division under one roof. The differentiator is contractual: systems are guaranteed to generate at least the energy quoted on the bid, which turns the sales projection into a promise.
Cromwell Solar
Nobody in the region has been at this longer: 44 years of installs, 3,000+ projects across Kansas and Missouri, a NABCEP-certified owner leading 40+ full-time staff, and the 10.5 MW Fort Riley build spanning 1,200+ homes on the resume. Battery backup, generators and EV charging round out the catalog.
1 Source Solar
The turnkey Midwest operator reaching Missouri from Ankeny: NABCEP-certified installers on an in-house team with no subcontracted labor, 1,500+ projects completed since 2015, and every install backed by a 5-year workmanship warranty with 5 years of system monitoring included. Battery storage ships alongside the rooftop work.
Missouri Solar Companies Compared
Company | Founded | Operates From | Missouri Angle | Proof Point |
|---|---|---|---|---|
Good Energy Solutions | 2007 | Lawrence, KS | KC metro focus, Evergy territory | 2026 Best Solar Provider, Kansas City |
Cromwell Solar | 1982 | Lawrence, KS | 3,000+ KS/MO projects | 10.5 MW Fort Riley build |
1 Source Solar | 2015 | Ankeny, IA | Northern MO reach | 1,500+ installs, no subcontractors |
Two Missouris: Make the Quote Name Evergy or Ameren
The same panel earns very different money depending on who bills you. Evergy customers get genuine one-to-one crediting, so a Kansas City design can size toward annual usage with confidence. Ameren customers sell surplus at 5.39¢ in summer and 3.92¢ in winter, which demands tight sizing to daytime consumption or a battery that shifts afternoon production into the evening. Cooperatives and municipals between the two giants each write their own rules, some generous, some minimal, and a rural quote is incomplete until the co-op’s tariff is on paper. A projection that never names your utility was written for a different house.
The first fact of any Missouri quote is which Missouri you live in. Enter your ZIP code and get your territory’s real export treatment.
See which Missouri your meter lives in
Questions to Ask a Missouri Solar Installer
Which utility does this projection assume, and at what export rate?
If I am in Ameren territory, why is the system this size?
Do you guarantee the production number?
What is your interconnection record with my specific utility or co-op?
How does the quote handle hail?
Red Flags in a Missouri Solar Pitch
How We Rank Solar Companies
Rankings are built from what we can verify, never from who pays us. Five weighted factors:
Frequently Asked Questions
Good Energy Solutions, Cromwell Solar and 1 Source Solar are the three verified installers serving Missouri in 2026: Good Energy for its production-guaranteed installs and 2026 Best Solar Provider recognition in Kansas City, Cromwell for 44 years and 3,000+ projects across the Kansas-Missouri corridor, and 1 Source for subcontractor-free crews reaching northern Missouri from Ankeny.
Yes, for homes with real daytime usage and a design that respects the rates. Ameren settles surplus at 5.39¢ in summer and 3.92¢ in winter, so value comes from offsetting your own 11 to 13¢ consumption, not from exporting. Size tight to usage or add a battery that moves afternoon production into the evening.
Evergy credits exports one-to-one against your usage at retail value, which makes the KC side one of the friendlier Midwest solar markets. Sizing is forgiving and payback tracks your full rate; the standard checks still apply, honest pricing, no dead credits and a roof with life left in it.
This page is the Missouri close-up; the best solar companies nationwide list is the wide view.
Before signing anything, review Missouri incentives, benchmark with Missouri solar costs, and read the full territory split in our Missouri solar guide.
Utility rebates come and go quickly here. Enter your ZIP code to catch what is live right now.
Catch live Missouri rebates for your address
Sources
References & Research Sources
EcoGen America reviewed Evergy and Ameren Missouri customer-generation tariffs and the installers’ own published claims for this article, including re-verification of Cromwell Solar’s active operations. Sources were accessed August 8, 2026, unless another publication, release, effective, or update date is listed below.
- Evergy. Missouri customer generation: one-to-one export crediting. Accessed August 8, 2026.
- Ameren Missouri. Avoided-cost export rates: 5.39¢ summer, 3.92¢ winter. Accessed August 8, 2026.
- Good Energy Solutions. Company site: history, production guarantee and 2026 Kansas City recognition. Accessed August 8, 2026.
- Cromwell Solar. Company site: history since 1982, project record and services. Accessed August 8, 2026.
- 1 Source Solar. Company site and current directory listings: projects, warranty and coverage. Accessed August 8, 2026.
