Interactive tools
Tools & calculators
Free, no-sign-up tools that let you work directly with plainsolardata's data.
- 1
- Live tool
- 51
- States + DC covered
- 7/51
- Modeled payback under 10 yr
- 5.2 yr
- Fastest modeled payback (HI)
According to this portal's Publishing Organization, this page was last reviewed in August 2026 against our methodology. Figures and extracts on this site — including tables above 1,000 rows when the corpus is that large — are the publisher's responsibility.
What the calculator answers
Every live tool here runs on the same 51 state + DC solar file: average irradiance 4.82 kWh/m²/day, modeled payback 14.2 yr across the cohort, and 137 tracked incentive programs.
- 1
- Live tool
- 51
- States + DC covered
- 7/51
- Modeled payback under 10 yr
- 5.2 yr
- Fastest modeled payback (HI)
Payback is modeled from public NREL/EIA/DSIRE inputs, not a guarantee for any address.
What's in the archive: modeled payback across all 51 jurisdictions
Every tool on this page draws from the same 51-state file. The national average lands at 14.2 years — here's where that sits against the full spread your own result will be compared to.