New Mexico vs South Carolina Solar Comparison
New Mexico gets more sun (6.2 hrs/day) while New Mexico has the faster payback (7.5 years).New Mexico offers higher 20-year savings at $36,800.
New Mexico
6.2 hrs
7.5yr payback
$36,800
20yr savings
South Carolina
4.8 hrs
9yr payback
$33,200
20yr savings
Side-by-Side Comparison
| Metric | New Mexico | South Carolina |
|---|---|---|
| Peak Sun Hours | 6.2 hrs | 4.8 hrs |
| Cost per Watt | $2.80 | $2.85 |
| 6kW System Cost | $16,800 | $17,100 |
| Federal Tax Credit | 30% | 30% |
| State Tax Credit | 10% | 25% |
| State Rebate | None | None |
| Net Metering | Full Net Metering | Full Net Metering |
| Electricity Rate | 15.34¢/kWh | 14.43¢/kWh |
| Payback Period | 7.5 years | 9 years |
| 20-Year Savings | $36,800 | $33,200 |
Verdict
New Mexico is the better state for solar ROI with $36,800 in 20-year savings and a 7.5-year payback period. New Mexico has more sun exposure at 6.2 hrs/day, making it ideal for maximum energy production. Both states qualify for the 30% federal solar tax credit.
Frequently Asked Questions
Is solar better in New Mexico or South Carolina?
New Mexico gets more sun (6.2 peak hours/day vs 4.8). New Mexico has a faster payback (7.5 years) and New Mexico offers higher 20-year savings ($36,800).
How do solar costs compare between New Mexico and South Carolina?
A 6kW system costs $16,800 in New Mexico vs $17,100 in South Carolina before incentives. Both qualify for the 30% federal tax credit.
Explore More
Was this data helpful?
Data verified March 2026 · Source: NREL, DSIRE, EIA