Solar calculators by state
Pick your state to estimate system size, cost, payback and 25-year savings with 2026 prices and your utility's real solar export rules. Every number is sourced; anything we could not verify is shown as "Not counted".
14 state calculators
Figures on each card: average home electricity price (EIA, Aug 2025–Jul 2026), typical quoted installed cost before incentives (EnergySage, Sep 2026) and expected yearly output per kW (NREL PVWatts, one city per state).
Arizona solar calculator
15.4¢/kWh average · $2.27/W quoted · 1,788 kWh per kW a year
State tax credit 25% (max $1,000)
APS: exports paid 5.554¢/kWh
California solar calculator
33.0¢/kWh average · $2.52/W quoted · 1,705 kWh per kW a year
No state tax credit
PG&E: export rate varies
Colorado solar calculator
16.6¢/kWh average · $2.64/W quoted · 1,647 kWh per kW a year
No state tax credit
Xcel Energy: retail net metering
Florida solar calculator
15.4¢/kWh average · $2.12/W quoted · 1,554 kWh per kW a year
No state tax credit
FPL: retail net metering
Georgia solar calculator
15.1¢/kWh average · $2.50/W quoted · 1,439 kWh per kW a year
No state tax credit
Georgia Power: exports paid 7.2188¢/kWh
Hawaii solar calculator
43.5¢/kWh average · $3.43/W quoted · 1,594 kWh per kW a year
State tax credit 35% (max $5,000)
Hawaiian Electric (Oahu): exports paid 13.5¢/kWh
Illinois solar calculator
18.8¢/kWh average · $2.96/W quoted · 1,342 kWh per kW a year
Illinois Shines (REC payments)
ComEd: exports credited ~10.103¢
Massachusetts solar calculator
30.4¢/kWh average · $2.90/W quoted · 1,343 kWh per kW a year
State tax credit 15% (max $1,000)
Eversource: retail net metering
Nevada solar calculator
13.4¢/kWh average · $2.37/W quoted · 1,797 kWh per kW a year
No state tax credit
NV Energy (Southern Nevada): retail net metering
New Jersey solar calculator
23.8¢/kWh average · $2.59/W quoted · 1,341 kWh per kW a year
SuSI ADI (SREC-II): 7.7¢/kWh for 15 yrs
PSE&G: retail net metering
New York solar calculator
28.4¢/kWh average · $2.75/W quoted · 1,260 kWh per kW a year
State tax credit 25% (max $5,000)
National Grid (Upstate): retail net metering
North Carolina solar calculator
14.8¢/kWh average · $2.44/W quoted · 1,443 kWh per kW a year
No state tax credit
Duke Energy Carolinas: retail net metering
Pennsylvania solar calculator
20.7¢/kWh average · $2.59/W quoted · 1,393 kWh per kW a year
No state tax credit
PECO: retail net metering
Texas solar calculator
16.0¢/kWh average · $2.25/W quoted · 1,485 kWh per kW a year
No state tax credit · Austin Energy solar rebate
Oncor area (retail provider): export rate varies
The 30% federal credit for buying ended after 2025
Homeowner-owned solar and batteries installed after December 31, 2025 get no federal tax credit, so our calculators show $0 for it. Lease and PPA companies may still claim a business credit; whether you see any of it depends on the contract.
Frequently asked questions
How accurate are these calculators?
They use the state's average electricity price (EIA), typical quoted installation cost (EnergySage), expected output for one city per state (NREL PVWatts) and the solar export rules of your utility that we could verify. They are planning estimates; a real quote for your roof decides.
Is the 30% federal tax credit included?
No. The homeowner credit (Section 25D) ended for solar and batteries installed after December 31, 2025, so every calculator shows $0 for it. Lease and PPA companies may still claim a business credit; compare that in the lease vs buy calculator.
My state is not listed. What can I use?
Use the lease vs buy calculator with your own electricity rate, and the incentives guide for the federal rules. We add a state only after checking its programs against official sources.
Why do some results say "Not counted"?
Programs whose current value or funding we could not confirm from an official source are listed but not added to your savings, so the estimate is never inflated by a guess.