Complete civil packages for utility solar in Knox County, Indiana: 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 Knox County, Indiana. We contract the complete civil package under one agreement, with Backwell superintendents and lead operators on site.
Knox County is where Origis Energy completed Wheatland Solar, a 210 MWdc and 150 MWac project that reached commercial operation on February 27, 2026 under a twenty year power purchase agreement with CenterPoint Energy. That recent completion establishes the county as a proven host with a working permitting path and a utility offtaker actively contracting in southwest Indiana. Knox sits in the same Wabash valley coal and agricultural corridor as Sullivan, Pike, and Posey, so developers scouting interconnection tend to look at all four together. Ongoing CenterPoint procurement makes repeat activity in the county plausible through the 2026 to 2028 period.
Publicly reported utility-scale solar in and around Knox 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.
Knox County occupies the Wabash Lowland where the White River joins the Wabash, and the ground stacks in three levels. The lowest is active leveed floodplain with Haymond, Wakeland, Bonnie and Armiesburg on the better drained alluvium and Petrolia, Zipp, McGary and Karnak in the slackwater basins, where Karnak is a stiff, high plasticity clay. Above that are broad sandy Pleistocene terraces with dune caps around Oaktown, Decker and Bruceville carrying Princeton, Ayrshire and Bloomfield sands, the ground the local melon and vegetable farms are built on. The eastern uplands are loess mantled with Alford and Iva silt loams. Levee districts with gravity gates and pump stations control interior drainage, and interior ponding after rain is a bigger practical problem than river stage.
Site selection inside the county changes the job completely. On the sand terraces grading is fast, onsite fill is free, and trenching is quick, but the sand blows, will not hold a slope, and needs geogrid and stone under any road that sees loaded trucks. In the slackwater clays you get low bearing subgrade, rutting, pumping, sticky trench spoil that will not compact back around conduit, and a real case for lime or cement modification on haul routes. Loess uplands cut vertically dry and gully wet. Anything in the bottoms triggers floodplain permitting, levee district coordination, culvert and gate review, and pad elevations set by base flood, and access road fills over soft alluvium may need surcharge or geotextile separation. Erosion control should assume fine grained sediment that will not settle in a plain basin, so design for skimmers and, where needed, flocculant.
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. Indiana does not issue a statewide general contractor or commercial building contractor license. Contractor licensing and registration is handled at the city and county level, so requirements vary by jurisdiction. Larger cities including Indianapolis, Evansville, Fort Wayne, and South Bend run their own contractor licensing or registration programs, generally requiring a fee, a contractor bond, general liability coverage, and workers compensation, with some jurisdictions also requiring an exam. Many rural solar host counties have no general contractor license at all, but a civil contractor should still expect county road use and haul route agreements, road maintenance bonds, county drainage board coordination on regulated drains and tile, and local building or improvement location permits. Verify the specific city or county requirement before mobilizing rather than assuming a state credential exists.
Construction stormwater. Construction Stormwater General Permit, known as the CSGP, issued by the Indiana Department of Environmental Management, IDEM. It applies to construction activity disturbing one acre or more of total land area, and to smaller areas that are part of a larger common plan of development or sale. As of December 18, 2021 the CSGP replaced the prior program administered under 327 IAC 15-5, commonly called Rule 5. Coverage is obtained by filing a Notice of Intent, or NOI, with IDEM, supported by a stormwater pollution prevention plan. Local soil and water conservation districts and county or municipal MS4 programs typically review and inspect on IDEM's behalf, so a utility-scale solar site will usually deal with both IDEM and the county SWCD. Backwell carries the SWPPP scope, installs and maintains the controls, keeps the inspection log, and closes the permit out with final stabilization.
Prevailing wage. Indiana has no state prevailing wage law. The Indiana Common Construction Wage Act was repealed effective July 1, 2015, and the state has not replaced it, so there is no state level wage determination for public or private work. Federal Davis-Bacon prevailing wage still applies to federally funded work, and applies to utility-scale solar through the Inflation Reduction Act labor requirements: projects of 1 MW AC and larger must pay Davis-Bacon prevailing wages and meet registered apprenticeship ratios to claim the full value of the investment or production tax credit. In practice that means nearly every utility-scale solar project in Indiana is built on certified payroll with apprenticeship participation even though the state itself imposes nothing. Owners and EPCs will also often impose their own project labor agreements or workforce commitments on top of the federal requirement. 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 Indiana 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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