Solar Payback Period in Mississippi
Estimated payback, savings, and ROI for a residential solar system in Mississippi — updated for 2026
Urgent tax credit deadlines
- Section 30D EV credit (up to $7,500) — expires June 30, 2026 (12 days left).
- Section 48E solar ITC safe harbor — construction must start by July 4, 2026 (16 days left).
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Solar ROI Overview for Mississippi
Based on Mississippi's average of 5.4 peak sun hours per day and utility rates of $0.117/kWh, a typical 7kW residential solar system in Mississippi would:
- Cost approximately $18,200 before incentives
- Generate about 10,624 kWh/year
- Save you $1,243/year ($104/month)
- Pay for itself in 14.6 years
- Deliver a 71% ROI over 25 years
Mississippi has excellent solar potential with above-average sun hours, making it one of the better states for solar investment.
Payback by System Size in Mississippi
| System Size | Cost | Production | Annual Savings | Payback | 25yr ROI |
|---|---|---|---|---|---|
| 4 kW | $10,400 | 6,071 kWh | $710 | 14.6 yrs | 71% |
| 5 kW | $13,000 | 7,588 kWh | $888 | 14.6 yrs | 71% |
| 6 kW | $15,600 | 9,106 kWh | $1,065 | 14.6 yrs | 71% |
| 7 kW | $18,200 | 10,624 kWh | $1,243 | 14.6 yrs | 71% |
| 8 kW | $20,800 | 12,141 kWh | $1,420 | 14.6 yrs | 71% |
| 10 kW | $26,000 | 15,177 kWh | $1,776 | 14.6 yrs | 71% |
How Solar Payback Works in Mississippi
Solar payback period is the time it takes for your cumulative electricity savings to equal the total cost of your solar system. In Mississippi, the calculation depends on three key factors:
- System cost — $2.60/Watt average in Mississippi
- Electricity rate — $0.117/kWh average utility rate
- Solar production — 5.4 average peak sun hours/day
After the payback period of 14.6 years, your solar panels continue generating free electricity for 15-20+ more years. With utility rates historically increasing 2-4% annually, your actual savings will likely exceed these estimates.
Mississippi Solar Data Summary
- Average Cost/Watt
- $2.60
- Average Utility Rate
- $0.117/kWh
- Peak Sun Hours
- 5.4 hrs/day
- Data Coverage
- 3 ZIP codes
Related Tools for Mississippi
Compare with Fastest Payback States
| State | Payback | Annual Savings | 25yr ROI |
|---|---|---|---|
| Mississippi (you) | 14.6 yrs | $1,243 | 71% |
| Louisiana | 11.8 yrs | $1,537 | 111% |
| South Dakota | 13.5 yrs | $1,452 | 85% |
| West Virginia | 13.7 yrs | $1,433 | 83% |
| Minnesota | 13.8 yrs | $1,574 | 81% |
| Kentucky | 13.9 yrs | $1,359 | 80% |
📖 Complete Guide to Solar ROI
Want to understand every factor that affects your solar payback period? Read our comprehensive guide covering financing options, NEM policies, and how to maximize your returns.
Read: Complete Guide to Solar ROI in 2026 →