Mississippi solar calculator
Size a Mississippi home solar system from your electric bill — kW, panel count, roof area, true cost with no federal credit for 2026 installs, and payback.
Quick answer: At $0.149/kWh and 4.6 peak sun hours, a $200/month bill needs about 12.71 kW — 31 × 410 W panels covering ~62 m². Gross cost is ~$29,106 with no federal credit for systems installed after 2025, offsetting $2,400 a year for a ~12.1 year payback.
Your details
Ballpark, not gospel. Ballpark, not gospel. Sized at 78% real-world output with the Mississippi sun-hour average — confirm shading, roof angle and your utility's current export credit with a local installer before buying. The calculator values all generation at your retail rate; exports earn far less, so real savings track self-consumption and batteries.
The 30% credit ended — what changed
The residential clean energy credit (26 U.S.C. § 25D) gave homeowners a 30% credit on solar installed from 2022 through 2025. The July 2025 tax law ended it: no credit is available for property placed in service after December 31, 2025. That is why every figure on this page is ~30% higher than pre-2026 guides show. If your system went live by the end of 2025, tick the box above to see the credit applied; leased systems may still benefit because the leasing company claims the commercial credit. Source: IRS — Residential Clean Energy Credit.
Typical Mississippi system sizes by monthly bill
| Monthly bill | System size | Panels (410 W) | Net cost (no 2026 federal credit) | Payback |
|---|---|---|---|---|
| $100 | 6.56 kW | 16 | $15,022 | 12.5 years |
| $200 | 12.71 kW | 31 | $29,106 | 12.1 years |
| $300 | 18.86 kW | 46 | $43,189 | 12.0 years |
Computed at $0.149/kWh, 4.6 peak sun hours and $2.29/W installed, with no federal credit for 2026 installs. Run your exact bill above.
Solar in Mississippi: the details
Solar cost in Mississippi
Solar is cheap to install in Mississippi. The EnergySage marketplace averaged about $2.29 per watt installed in 2026, with market quotes typically landing $1.95–$2.63/W — below the $2.50–$3.50/W national band. A typical ~13 kW Mississippi system grosses around $30,000 before any local utility incentive, with no federal credit for 2026 homeowner installs.
What moves the number: roof complexity, panel tier, and how competitive the quote market is in your metro. Get at least three quotes — spreads of $0.50/W between installers are common.
Export rules: getting paid for surplus power
Mississippi has no retail-rate net metering. Under the Net Renewable Generation Rules, exported kWh are credited at the utility's avoided cost plus a 2.5¢ adder — about 6.1¢/kWh for Entergy Mississippi from February 2026, well under the ~15¢ retail rate.
Credit values differ by utility, and the rules are in flux: the PSC is reviewing them in Docket 2025-AD-61, and the utilities have challenged the $3,500 residential rebate (rehearing granted).
Practical takeaway: verify the current export credit with your utility before quoting savings — and size for self-consumption, since exports earn less than half of retail.
Mississippi solar incentives
Mississippi's incentive is utility-mandated rather than a tax break:
$3,500 one-time rebate — Entergy Mississippi and Mississippi Power must pay qualifying residential self-generation buyers a one-time $3,500 rebate, plus an extra 2¢/kWh export credit for households at or below 250% of the poverty line.
Caveat: the utilities have challenged the rebate and the PSC granted a rehearing — the rules are in flux, so confirm eligibility before counting on it.
Is solar worth it in Mississippi?
Verdict: borderline — the exports decide it. A $200/month bill sits at a ~12.1-year payback: cheap installs (~$2.29/W) and 4.6 sun hours pull one way, avoided-cost exports (~6¢/kWh against ~15¢ retail) pull the other. Maximize self-consumption, and confirm the export credit and rebate status — the rules are under PSC review.
Questions people actually ask
Straight answers, no fluff. Then run your own numbers above.
How many solar panels do I need in Mississippi?
It follows your bill. At the Mississippi average of $0.149/kWh and 4.6 peak sun hours, a $200/month bill needs about a 12.71 kW system — roughly 31 × 410 W panels covering ~62 m² of roof.
What is the average cost of solar panels in Mississippi in 2026?
The EnergySage marketplace averaged about $2.29 per watt installed in 2026, with market quotes typically $1.95–$2.63/W — below the $2.50–$3.50/W national band. A typical ~13 kW system grosses around $30,000, with no federal credit for 2026 homeowner installs.
Does Mississippi have net metering?
No. Mississippi has no retail-rate net metering: under the Net Renewable Generation Rules, exported kWh are credited at the utility's avoided cost plus a 2.5¢ adder — about 6.1¢/kWh for Entergy Mississippi from February 2026, well under the ~15¢ retail rate. Credit values differ by utility, and the PSC is reviewing the rule in Docket 2025-AD-61, so verify current export rates before quoting savings.
Does Mississippi offer any solar tax credit or rebate?
A modest one, from the utilities. Mississippi requires Entergy Mississippi and Mississippi Power to pay qualifying residential self-generation buyers a one-time $3,500 rebate, plus an extra 2¢/kWh export credit for households at or below 250% of the poverty line. Caveat: the utilities have challenged the rebate and the PSC granted a rehearing — the rules are in flux, so confirm before you count on it.
Is the 30% federal solar tax credit still available?
Not for homeowner purchases anymore. The residential clean energy credit (26 U.S.C. § 25D) is not available for property placed in service after December 31, 2025, under the July 2025 tax law (Public Law 119-21). Systems installed by the end of 2025 can still claim 30%, and leased systems may still benefit because the leasing company claims the commercial credit instead. (Source: IRS — Residential Clean Energy Credit.)
Is solar worth it in Mississippi?
The calculator puts a $200/month bill at a ~12.1-year payback with no federal credit — borderline. The ingredients are good: cheap installs (~$2.29/W) and 4.6 peak sun hours. The drag is the export regime: surplus earns about 6¢/kWh against a ~15¢ retail rate, so real savings track self-consumption — and the rebate rules are under PSC review.
Figures last checked October 2026. Sources: EIA Electric Power Monthly (July 2026: 14.88¢/kWh), NREL PVWatts/NSRDB (~4.6 peak sun hours), DSIRE, Mississippi Public Service Commission; IRS — Residential Clean Energy Credit.
More US solar calculators
Compare other states: Texas, Florida, California, Arizona, North Carolina, Michigan, Minnesota, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey. And the national US solar calculator for country averages.
Comparing quotes? The solar cost calculator breaks down cost per watt and the solar ROI calculator maps your payback year by year. Going deeper: installation cost guide, how net metering works, how much you can save with solar and the solar batteries guide.