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St. Louis › Trades › Solar

Compare Solar Installers in St. Louis, MO by permit record

51 solar installers filed 148 solar permits on homes in the City of St. Louis from October 2023 to September 2026; 28 filed one in the last 12 months. The middle filed job value was $20,000. The most active in the last 12 months were Sun Solar (11 permits), Sunsent Solar (10) and Brda Electric Inc (5); busy is not the same as careful. Side by side: permits filed, share finished and permits in the last 12 months for each firm. Pick what you value and the list re-orders.

Top 25 solar installers in St. Louis, MO by permit record default order · Sep 2026

#ContractorPermitsFinishedUsual jobFit
  1. 1
    Sun SolarSpringfield
    2494%$37,70481FIT
  2. 27—$21,47476FIT
  3. 36—$18,22875FIT
  4. 46—$21,44174FIT
  5. 5
    Mayer SolarPlano
    4——69FIT
  6. 6126/9$10,35867FIT
  7. 7
    Sunsent SolarSt Charles
    176/9$28,61264FIT
  8. 81288%$14,67563FIT
  9. 9
    Sunset SolarSt Charles
    3——61FIT
  10. 10
    Lifetime Solar LLCKansas City
    2——58FIT
  11. 11
    Logic SolarColumbia
    2——58FIT
  12. 12
    Astrawatt SolarKansas City
    4——57FIT
  13. 13
    Gigawatts ElectricO'Fallon
    2——56FIT
  14. 14
    Shine SolarRogers
    3——55FIT
  15. 15
    Efs EnergySt Louis
    2——51FIT
  16. 16
    Lgcy Installation Serv. LLCLehi
    2——51FIT
  17. 17
    Lgcy Installation Services LLCLehi
    2——51FIT
  18. 18
    Nre SolarSt Louis
    2——51FIT
  19. 19
    Shinova SolarKansas City
    2——51FIT
  20. 20
    Solera EnergySpringfield
    2——51FIT
  21. 21
    Titan Solar Power, MO IncChandler
    2——51FIT
  22. 22
    Ecocentrix Energy SolutionsSt Louis
    1——48FIT
  23. 23
    Flare CommunicationsBallwin
    1——48FIT
  24. 24
    Freedom Forever Illinois LLC
    1——48FIT
  25. 25
    Grid LLCHighlands
    1——48FIT
Top 25 of 51 in the default order. The full list and the sliders load with the page.Match scores from public records, not quality ratings.

How to choose a solar installer in St. Louis, MO

  1. Shortlist from the 28 of 51 solar installers that filed a solar permit in St. Louis in the last 12 months.
  2. Check the license or registration number yourself with City of St. Louis contractor business licenses.
  3. Compare written quotes with the usual filed job of $20,000; it is a permit value, not a price.
  4. Ask about finishing: 84% of St. Louis solar permits a year or more old reached sign-off; ask a firm below that why.

Get references and proof of insurance before you sign. Hiring a solar installer →

Most active solar installers in St. Louis, MO, last 12 months

Top 5 by solar permits filed in the last 12 months. This is volume, not quality: a busy firm is not necessarily a careful one.

  1. Sun Solar: 11 permits
  2. Sunsent Solar: 10 permits
  3. Brda Electric Inc: 5 permits
  4. Straight Up Solar: 5 permits
  5. Straightup Solar: 4 permits

Solar permits by ZIP code in St. Louis

The 8 ZIP codes with the most solar permits on homes from October 2023 to September 2026. Each opens permits by trade and the most active firms there.

63116 (30) 63104 (20) 63110 (20) 63109 (19) 63118 (18) 63139 (10) 63108 (8) 63112 (6)

All St. Louis ZIP codes →

How this list is ordered

Before you move a slider, the list is in a default order built only from the permit record: how much of each firm’s record is this kind of job (weight 30), how often its permits reached completion (25), how many permits it filed in the last 12 months (15) and how quickly its permits closed (10). Each measure is ranked against the other 51 firms and pulled toward the middle when a record is short.

The order comes from the St. Louis permit file, not from reviews: 28 of 51 solar installers filed a permit in the last 12 months and 84% of their permits a year or more old were finished. Nobody pays to be listed or to move up, and there are no star ratings or reviews. The sliders and presets change the weights, and the order changes with them. How the records work in St. Louis.

Questions

Who are the top solar installers in St. Louis, MO?

We do not rate contractors. In this page’s default order, which uses only the permit record through Sep 2026, the top 3 are Sun Solar (24 permits, 94% finished), Brda Electric Inc (7 permits) and Straight Up Solar (6 permits).

How do I compare solar installers in St. Louis, MO?

51 firms are on the list; the busiest filed 11 solar permits in the last 12 months and the middle firm filed 1 in the whole file. Line them up on the same public measures: permits filed, share of permits finished and usual filed job value. Pick what matters to you and the list re-orders, for example recent activity if you need someone soon. The order comes from the permit record only, and nobody pays to be listed or to move up.

How many solar installers are there in St. Louis, MO?

51 firms filed at least one solar permit on homes in the City of St. Louis from October 2023 to September 2026; 28 of them filed one in the last 12 months.

How do I look up a solar installer’s license in St. Louis, MO?

We have not matched license records to St. Louis firms, so ask for the license number and check it yourself with City of St. Louis contractor business licenses. How to check a contractor's license in Missouri →

What should I ask a solar installer in St. Louis, MO before hiring?

Three you can check against this page: “How many solar permits have you filed in St. Louis?” (the middle firm here filed 1; 28 of 51 filed one in the last 12 months); “What value will you put on the permit?” (the usual filed value here is $20,000); “Will you pull the permit in your company’s name, and when is the final inspection?” (84% of older solar permits here were finished). All 10 questions and how to check each →

Where can I see a solar installer’s permit records in St. Louis, MO?

On this page: 51 firms filed 148 solar permits from October 2023 to September 2026, and each firm’s name opens its own permit record. Every number comes from City of St. Louis building permits. To see one permit itself, search the address or permit number with the St. Louis permit office. How the records work in St. Louis →

Where are the solar installer ratings and reviews in St. Louis, MO?

We do not rate or collect reviews. Instead each of the 51 solar installers here is shown with its permit record: 148 permits, the share finished and usual filed value. Read reviews on other sites and use this page to check them against the record. Reviews vs permit records →

St. Louis, MO solar permit records: where they come from

Every number on this page comes from City of St. Louis building permits: 51 firms filed 148 solar permits on homes in the City of St. Louis from October 2023 to September 2026, and 28 of them filed one in the last 12 months. The middle firm has 1 permit in the whole file. A short record leaves more uncertainty, and some jobs never require a permit.

The middle recorded permit value is $20,000. That is a filed estimate, not a quote or final bill. See how we compare records.

Most St. Louis solar permits are filed in November (224 against an average month of 100); August is the quietest (16). When each trade is busiest in St. Louis →