24/7 Emergency Electricians · St. Charles County & St. Louis Metro
Get Quote

Commercial electrical service

Commercial Solar Installation

For a business, solar is a fixed-cost decision: lock in a portion of your electricity cost for 25 years instead of riding Ameren rate increases. Caito Electric designs and installs commercial solar for warehouses, offices, retail, churches, schools, and light industrial facilities across the St. Louis metro, with the licensed electricians and three-phase experience the interconnection requires.

We start with 12 months of interval data from your utility account, model the system against your demand profile, and give you a proposal with production, payback, and two prices. Then we handle permits, the structural review, the utility application, and the witness test.

Electrician at a commercial electrical enclosure
Electrician at a commercial electrical enclosure

What's included

  • Ballasted flat-roof, standing-seam metal, carport, and ground-mount racking
  • Three-phase string inverters at 208V or 480V with production monitoring
  • Battery storage for demand-charge reduction and backup of critical equipment
  • Ameren Missouri interconnection, PE-stamped drawings, and witness test coordination
  • Fleet EV charging designed alongside the array
  • Federal tax credit and accelerated depreciation documentation for your accountant

Good candidates for commercial solar

  • Large, unobstructed flat or south-facing roofs with 10+ years of remaining life
  • Daytime-heavy loads: offices, schools, manufacturing on day shift, refrigeration
  • Monthly bills above $1,000 or significant demand charges
  • Owner-occupied buildings, or tenants with long leases and landlord approval

How we scope a commercial project

Every commercial proposal begins with a site audit: roof photos and measurements, the main switchgear nameplate, available breaker space, the utility meter and CT cabinet, and your interval usage data. From that we produce a preliminary design, a production estimate, and a written proposal. Structural review, drawings, and permitting follow once you approve the design.

Serving St. Charles County & the St. Louis Metro

We provide commercial solar installation throughout St. Charles County, including St. Charles, St. Peters, O'Fallon, Wentzville, Lake St. Louis, Cottleville, as well as St. Louis City, St. Louis County, and surrounding communities within 75 miles. See all service areas.

Questions about commercial solar installation

How long does a commercial solar project take?

From signed proposal to permission to operate is typically three to five months, most of it utility and permit lead time. The installation itself is usually one to three weeks depending on system size.

Can you install solar on a leased building?

Yes, with the landlord's written approval. Many landlords welcome it as a building improvement. We can also structure the proposal so the landlord owns the system and the tenant buys the power.

Do you handle the Ameren paperwork?

Yes. We prepare the interconnection application, supply PE-stamped drawings where required, schedule the witness test, and stay on it until the meter is swapped.

Related services

Ready to get started?

Get a flat-rate quote for commercial solar installation from a licensed local electrician.

Schedule Online

Need an electrician today?

Licensed, insured, and responding 24/7 across St. Charles County & the St. Louis Metro. Tell us what's going on and we'll take it from there.

Get a Free Quote