Solar Panel Calculator for Tulsa, OK
Estimate the cost, savings and payback of solar panels in Tulsa, OK, using local NREL sunshine data, Oklahoma prices and electricity rates.
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Tulsa gets about 5.23 peak sun hours a day on a south-facing roof, so each kW of panels makes about 1,470 kWh a year. That ranks #48 of the 111 cities on this site. Output peaks in Jun and is lowest in Dec.
Sunshine in Tulsa by month
What an 8 kW system makes in Tulsa
| Month | Sun hours a day | Output | Bill savings |
|---|---|---|---|
| Jan | 3.88 | 808 kWh | $112 |
| Feb | 4.33 | 800 kWh | $110 |
| Mar | 5.05 | 984 kWh | $136 |
| Apr | 5.90 | 1,096 kWh | $151 |
| May | 5.89 | 1,104 kWh | $152 |
| Jun | 6.89 | 1,224 kWh | $169 |
| Jul | 6.66 | 1,200 kWh | $166 |
| Aug | 6.41 | 1,152 kWh | $159 |
| Sep | 5.63 | 1,000 kWh | $138 |
| Oct | 4.79 | 936 kWh | $129 |
| Nov | 3.94 | 768 kWh | $106 |
| Dec | 3.37 | 696 kWh | $96 |
| Year | 5.23 | 11,760 kWh | $1,624 |
Savings at 13.81¢ per kWh (Oklahoma average), with every kWh credited at that price.
Cost and payback by system size
At $2.57 per watt, the Oklahoma average, before incentives.
| System | Cost | Year 1 savings | Payback | 25-yr gain |
|---|---|---|---|---|
| 4 kW | $10,280 | $812 | 13.0 yrs | $8,848 |
| 6 kW | $15,420 | $1,218 | 13.0 yrs | $13,272 |
| 8 kW | $20,560 | $1,624 | 13.0 yrs | $17,696 |
| 10 kW | $25,700 | $2,030 | 13.0 yrs | $22,120 |
| 12 kW | $30,840 | $2,436 | 13.0 yrs | $26,544 |
How many panels you need in Tulsa
| Monthly use | System | 400 W panels |
|---|---|---|
| 500 kWh | 4.08 kW | 11 |
| 750 kWh | 6.12 kW | 16 |
| 1,000 kWh | 8.16 kW | 21 |
| 1,500 kWh | 12.24 kW | 31 |
| 2,000 kWh | 16.33 kW | 41 |
Covering 100% of a year's use at 1,470 kWh per kW.
Common questions
Is solar worth it in Tulsa?
At local averages an 8 kW system costs about $20,560 before incentives, saves about $1,624 in its first year and pays back in about 13.0 years.
How many peak sun hours does Tulsa get?
About 5.23 a day over the year on a south-facing roof at 20°, from 3.4 in Dec to 6.9 in Jun, according to NREL's PVWatts model.
How much does a 1 kW solar system produce in Tulsa?
About 1,470 kWh a year, or 122 kWh a month on average.
Is there a federal solar tax credit?
Not for homeowners who buy their system. The 30% Residential Clean Energy Credit ended for systems installed after December 31, 2025.
Sources
- NREL PVWatts V8 API (south-facing, 20° tilt, 14% losses, typical-year weather): https://developer.nlr.gov/docs/solar/pvwatts/v8/
- EnergySage, Solar panel cost by state (updated November 6, 2026): https://www.energysage.com/local-data/solar-panel-cost/
- U.S. EIA, Electric Power Monthly, Table 5.6.B (residential price, Jan–Aug 2026): https://www.eia.gov/electricity/monthly/epm_table_grapher.php?t=epmt_5_6_b