Rock Hill, SC
Solar Installers in Rock Hill, SC
The city’s licence rule, the paperwork its utility needs, and a checklist for comparing proposals. No rankings.
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What the Rock Hill installation market looks like
A company quoting in Rock Hill has to know that the city is its own electric utility, not Duke Energy.
A Rock Hill job needs two city approvals, the building permit from Planning & Development and the utility agreements with the Utilities Department, plus a City of Rock Hill business licence for every contractor on site.
There are roughly 33,556 housing units in the city (ACS 2023 5-year), a median build year of 1995 and a 53.5% owner-occupancy rate, so most proposals you see will be for a roof mount on a 25-to-35-year-old house.
Ask early whether the roof needs work; see the Rock Hill installation guide for what the city inspects.
Which licences Rock Hill requires for solar work
| Part of the job | Residential (city rule) | Commercial (city rule) |
|---|---|---|
| Panels and roof mounting | SC Residential Builder, a solar installer licence with a roofing specialty, or a Contractor’s Licensing Board licence | General contractor with General Roofing or Specialty Roofing (or building) classification |
| Added framing | Carpenter classification as well | General contractor with Structural Framing |
| Electrical work | Permitted separately; SC-licensed electrical contractor | Mechanical contractor with electrical classification |
| Ground mount | Covered by the residential rules above | General contractor with Structural Shapes |
| Every contractor | City of Rock Hill business licence | City of Rock Hill business licence |
City of Rock Hill Solar Panels Permit Application, last updated 10 March 2023, read 5 October 2026.
One rule catches people out: a solar installer may not subcontract the electrical work to an electrician, but a licensed Residential Builder may. Ask who will pull the electrical permit before you sign. Verify any licence yourself on the SC LLR licence lookup.
Types of solar company you will meet in Rock Hill
Three kinds of company usually quote: a local or regional installer with its own crews, a sales company that hands the build to subcontractors, and a general or roofing contractor that adds solar to a re-roof.
Rock Hill’s rule makes the second model harder than in some places, because the electrical side has to be either a Residential Builder’s own work or a separately permitted electrical contractor. Ask every company to name, in writing, who holds which licence on your job.
How a good installer should size a Rock Hill system
Sizing to 100% of annual use is the standard pitch, and in Rock Hill it is usually the wrong one. Because exports earn 2.168–3.874¢ against an average residential price of 12.55¢ (EIA-861, 2024), the extra panels that push you into surplus pay back slowly.
A careful installer asks for twelve months of city bills, estimates how much output you will use as it is produced, and shows you the self-use share as a number in the proposal.
PMPA’s on-peak windows help a little: 1–9 p.m. on summer weekdays and 6 a.m.–1 p.m. on weekdays from October to May. A west-leaning array exports more in the summer on-peak window. Ask whether the installer modelled that.
How Rock Hill installers price solar
Proposals here are priced per watt of panel capacity, with the city permit, plan review, electrical trade permit and any engineering added or folded in.
The city permit is small: $35 plus $5 per $1,000 of valuation above the first $1,000, with a 25% plan review.
Financing is where prices diverge most, because many solar loans add a dealer fee to the cash price.
We do not publish a Rock Hill price per watt until we hold twelve sourced local quotes. How to read a Rock Hill solar price.
Rock Hill solar quote comparison checklist
Put each proposal next to this list. A missing line is a question, not necessarily a deal-breaker.
Should be PMPA’s Schedule A rate (3.874¢ on-peak, 2.168¢ off-peak as of the 2020 schedule), or the current figure from the city, never retail.
The percentage of annual output the model assumes you consume on site.
The city wants cut sheets for each; you should see the same models on your contract.
Required by Rock Hill for every rooftop system, including a components-and-cladding wind check.
Standard Interconnection Agreement and Tri-Party Net Billing agreement, plus your liability insurance certificate.
Building permit, plan review and the separate electrical permit, with the fees named.
The gap shows any dealer fee.
Panel, inverter and workmanship terms, and who honours each.
PMPA and the city hold a first right of refusal on them. A contract that assigns them to the installer needs explaining.
Questions to put to a Rock Hill solar installer
How many systems have you connected to the City of Rock Hill’s electric system, and can you show me the paperwork you file? What export rate does your model use? Will a licensed electrical contractor do the wiring under its own permit?
Who will be on my roof, and are they your employees? What happens to my warranty if you stop trading? If the answers are vague on the city utility, the company has probably not done a job here.
Warranties, equipment and batteries in Rock Hill proposals
The city’s application asks for inverters with integrated arc-fault protection and rapid shutdown and lists UL 1741 and IEEE 1547 on the one-line diagram, so equipment in any compliant proposal will carry those listings.
Beyond that, compare the manufacturer warranties and, separately, the installer’s workmanship warranty, which covers roof leaks and wiring. A battery quote should explain what it does under net billing; see battery storage in Rock Hill.
Red flags in Rock Hill solar sales
Rock Hill uses net billing with avoided-cost credits.
The IRS says §25D is not available for property placed in service after 31 December 2025.
South Carolina lets you cancel a door-to-door sale until midnight of the third business day after signing, by written notice (SC Code §37-2-502).
Third-party power purchase agreements are not permitted in South Carolina.
Financing offers from Rock Hill installers
Ask for the cash price first, then the loan price, the APR, the term and any dealer fee. Keep ownership, because the 25% state credit (up to $3,500 a year) only goes to the owner. Financing solar in Rock Hill and the state guide to choosing a South Carolina installer.
Questions
What licence does a solar installer need in Rock Hill?
Can a solar company subcontract the wiring in Rock Hill?
How many solar quotes should I get in Rock Hill?
Does HyreSolar recommend Rock Hill installers?
Who files the utility paperwork for solar in Rock Hill?
Should a Rock Hill proposal include a structural engineer?
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