Solar PV systems involve high-voltage DC and substantial fault currents. Improper installation can cause fire, injury, or death. Consult a licensed electrician and your local Authority Having Jurisdiction (AHJ) before any installation work, and verify every value against the current NEC edition and current product datasheets. Numbers and recommendations on this page are educational starting points, not a substitute for professional design and inspection.
Ohio solar guide
DIY solar in Ohio: incentives, sizing, and the off-grid angle
Ohio is quietly one of the best Midwest states for DIY solar. Sales tax exemption on PV equipment (R.C. 5739.02(B)(42)) saves 5.75% off equipment cost. Property tax exclusion (R.C. 5709.53) is automatic statewide. All four investor-owned utilities — AEP Ohio, DP&L, Duke Energy Ohio, and FirstEnergy — are required to offer net metering for residential systems.
The PJM SREC market is open to Ohio systems but prices are low ($5–$20/SREC) — don't bank on SREC income as a meaningful economic driver. The federal 26% credit stacks on top.
Incentive snapshot
As of mid-2026. Verify on your state's energy website before relying on the dollar figures.
- Federal Residential Clean Energy Credit
- 26%
- State tax credit
- —
- Sales tax exemption on solar equipment
- Yes
- Property tax exemption
- Yes
- Net metering
- Full retail (1:1)
- SREC market
- Active
- Average peak sun hours
- 4.2 hrs/day
- DIY-permit friendly
- Yes
Phases down: 30% through 2025 → 26% in 2026 → 22% in 2027 → 0% under current law. Dwellings only — vehicle/RV systems don't qualify.
Your panels, batteries, and controllers ship sales-tax-free.
Adding solar doesn't bump your assessed value.
Ohio PUC requires net metering for all investor-owned utilities. AEP Ohio, DP&L, Duke Energy Ohio, and FirstEnergy all compliant.
You can sell Solar Renewable Energy Credits — meaningful additional income.
Used to size your array — more sun hours = fewer panels needed for the same output.
One of the better Midwest DIY states. Sales tax exemption on equipment (R.C. 5739.02(B)(42)) and property tax exclusion (R.C. 5709.53) both automatic. PJM SREC market exists but prices are low ($5–$20/SREC) — don't bank on SREC income.
DIY install angle in Ohio
Ohio is broadly homeowner-friendly for DIY solar permits. Most counties accept homeowner-pulled electrical permits for own- occupancy installs. Columbus, Cleveland, and Cincinnati metros follow the state Residential Code of Ohio (RCO), which adopts NEC and standard electrical inspection practices — homeowner DIY is allowed but inspection is real.
The sales tax savings stack: on a $15,000 panel + controller + inverter purchase, Ohio's 5.75% exemption saves ~$863 — meaningfully more than most states. Make sure your vendor knows to apply the exemption at purchase (form ST EX); many will quote you the tax-inclusive price by default.
Rural Ohio off-grid: southern and southeastern Ohio (Appalachian Ohio — Athens, Hocking, Vinton, Meigs counties) has significant off-grid hobby-solar activity. County-level permitting is light to nonexistent for outbuildings and seasonal cabins. Off-grid wins easily on cost-per-kWh for properties where extending grid service would cost $5K+.
Sizing for Ohio sun
Ohio averages 4.2 peak sun hours/day — solid Midwest values. The northwestern corner (Toledo, Sandusky) gets the highest; lake-effect cloud cover near Cleveland costs about 0.2 hours/day on average.
December reality: Ohio December sun-hours fall to about 2.1/day. Grid-tied builders are unaffected. Off-grid builders should size for January and plan generator backup or a larger battery bank for the worst two weeks of the year.
Tilt for Ohio winters: ground-mount arrays should run 35–45° to shed snow under their own weight after snowfall ends. Roof-mount arrays at shallower residential pitches will accumulate and require manual clearing during heavy snow weeks. Plan accordingly.
Try the SolarControllerFinder builder
Enter your panels, battery bank, and load profile. We run the wiring math (NEC 690.7 cold- weather Voc derating, 690.8 ampacity) and recommend charge controllers that actually work together — ranked by price-to-trust, not by who paid us.
Open the builder →