Alabama vs Tennessee Solar Incentives: Which State Gets the Better Deal?
Side-by-side comparison of Alabama and Tennessee solar incentive programs in 2026: state tax credits, net metering rules, exemptions, payback period, and projected 25-year savings.
| Metric | AL · Alabama | TN · Tennessee |
|---|---|---|
| Avg Monthly Bill | $165 | $165 |
| Peak Sun Hours / Day | 4.8 | 4.8 |
| Avg $/Watt Installed | $3.1 | $2.85 ◆ |
| State Tax Credit | None | None |
| Net Metering | None | None |
| SREC Market | No | No |
| Property Tax Exempt | No | No |
| Sales Tax Exempt | No | No |
| Avg Payback (yrs) | 9.8 | 9.6 ◆ |
| Avg 25-Year Savings | $28,400 | $28,900 ◆ |
State Tax Credit Comparison
Alabama offers no state income tax credit. Tennessee offers no state income tax credit.
Net Metering Policies
Alabama: no statewide net metering mandate. Tennessee: no statewide net metering mandate.
Net metering is often the most economically significant solar policy because it determines how excess production is valued. Retail-rate states (where you receive full retail price for exported energy) have substantially better solar economics than avoided-cost or no-net-metering states.
Average 25-Year Savings
Alabama: $28,400 over 25 years (avg payback 9.8 yrs). Tennessee: $28,900 over 25 years (avg payback 9.6 yrs).
Verdict: Which State Wins on Solar?
Tennessee delivers stronger lifetime solar economics than Alabama due to more favorable net metering rules.
Note: state averages mask significant within-state variation. Your specific utility, roof orientation, and household electricity profile drive your actual numbers — use the calculator to model your home directly.