Complete civil packages for utility solar in Callaway County, Missouri: clearing, mass grading, access roads, collection trenching, SWPPP, fencing, and substation civil.
Backwell is a civil site work general contractor serving utility solar EPCs building in Callaway County, Missouri. We contract the complete civil package under one agreement, with Backwell superintendents and lead operators on site.
Callaway County holds the single largest approved solar build in Missouri. The Missouri Public Service Commission granted Ameren Missouri a certificate of convenience and necessity on May 15, 2026 for the 250 MW Reform Renewable Energy Center on roughly 1,200 acres Ameren already owns around its Callaway Nuclear Plant. Construction can start as early as 2026 with completion targeted by 2028, and the scope includes a new 345 kV switching station called Odyssey. A single owner controlled site of that size on utility owned ground means a long, continuous civil package: access roads, mass grading, erosion control, and substation and switchyard earthwork.
Publicly reported utility-scale solar in and around Callaway County:
Project details come from public filings and reporting and are listed to show where the work is. Backwell is not affiliated with these projects or their developers.
Callaway sits on the Missouri River's north side where a loess-mantled glacial till plain gets chewed up by the river hills and the Ozark Border. The flatter north and central uplands run to claypan prairie soils of the Mexico and Putnam series, silt loam surface over a dense silty clay subsoil that starts around 10 to 18 inches, while the ridgetops and bluff backslopes near the river carry deep loess soils of the Menfro and Winfield series. Side slopes cut into clayey glacial till map as Armstrong and similar high shrink swell soils that slip when you oversteepen them. Drainage is Auxvasse Creek, Cedar Creek, and short steep tributaries falling to the Missouri, with Mississippian limestone shallow enough near the river breaks to matter, plus the old Cheltenham refractory clay horizons the county was mined for.
Clearing splits into two jobs: open claypan cropland in the north that grubs fast, and heavily timbered river hills in the south with real stump and slope work. Mass grading on Menfro loess cuts and hauls easily but rills the moment it rains, so you stage seeding and blanket behind the dozers rather than at the end; the Armstrong till side slopes are the ones that fail, so keep cut slopes flat and daylight the seep lines. Claypan ground perches water, which means access roads need a geotextile and rock section rather than a scraped subgrade, trenching in the flats hits saturated clay that will not backfill dry, and erosion control on the loess wants check dams in every swale plus early stabilization, not just silt fence.
We price the package as one scope under one contract, so the EPC has a single point of responsibility for the civil critical path instead of managing separate clearing, earthwork, and utility subcontracts.
Backwell superintendents, project managers, and lead operators run every site. We mobilize company equipment for the core scope and scale each project with leased production fleets, qualified regional subcontractors, and agency-placed field staff, all under Backwell supervision and a single contract.
Contractor licensing. Missouri has no statewide general contractor license and no state commercial building license, so there is no single state card to pull for civil sitework. Licensing and registration are handled at the city and county level, and the requirements vary: larger jurisdictions such as Kansas City, the City of St. Louis, St. Louis County, and Springfield require local contractor registration or a business license, while many rural counties that host solar sites have no contractor licensing at all. What rural solar counties do require is land use approval, typically a conditional use permit or special use permit from the county commission or planning and zoning body, plus a road use or haul route agreement with the county highway department. Practical qualification for a solar EPC in Missouri therefore turns on insurance limits, experience modification rate, equipment fleet, and prequalification packets rather than a state license number.
Construction stormwater. Construction stormwater in Missouri is permitted by the Missouri Department of Natural Resources, Water Protection Program, through a Missouri State Operating Permit for land disturbance issued under the Construction or Land Disturbance Master General Stormwater Permit, permit number MORA00000. Coverage is required for any construction activity disturbing one acre or more, or disturbing less than one acre when it is part of a larger common plan of development or sale that will cumulatively disturb one acre or more. The core requirement is a Stormwater Pollution Prevention Plan, or SWPPP, with site specific best management practices to limit soil exposure, erosion, and pollutant discharge. Note that the MO-R100000 area wide land disturbance general permit is a different instrument, available only to a city, county, state or federal agency, or other governmental jurisdiction, and is not the permit a private solar project or its contractor uses. Source: https://dnr.mo.gov/water/construction-or-land-disturbance-master-general-stormwater-permit-mora00000 Backwell carries the SWPPP scope, installs and maintains the controls, keeps the inspection log, and closes the permit out with final stabilization.
Prevailing wage. Federal Davis-Bacon prevailing wage rates apply on their own terms through the Inflation Reduction Act: solar projects with a maximum net output of 1 MW AC or greater must pay Davis-Bacon prevailing wages to laborers and mechanics and meet apprenticeship labor hour and ratio requirements in order to claim the full value investment or production tax credit. Essentially every project on this list clears that 1 MW threshold, so certified payroll and apprenticeship tracking should be assumed on all of them. On top of the federal requirement, Missouri has its own state prevailing wage law under Chapter 290 of the Revised Statutes of Missouri, administered by the Missouri Department of Labor and Industrial Relations, Division of Labor Standards, which issues annual wage orders by county and occupational title. The state law reaches public works construction for a public body, so privately owned developer solar is generally outside it, but work for a municipal utility, a public power district, or any publicly owned or publicly funded portion of a project can trigger state prevailing wage and state certified payroll on top of the federal obligation. For projects claiming the full ITC or PTC, Backwell produces Davis-Bacon certified payroll, pays the applicable wage determination, and supports apprenticeship labor-hour compliance.
All Missouri solar civil work or the national utility solar civil page.
Send plans, a scope of work, and the schedule through the form below or call (315) 400-2654. We review the civil package, walk the site if it is at that stage, and return a scoped proposal with a schedule of values, stated fill allowances, and unit rates for overages. A one-page capability statement is available for prequalification files.
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