Solar Panels in Mississippi (MS)
Last updated: February 24, 2026
Everything you need to know about going solar in Mississippi (MS) — costs, savings, incentives, and the best equipment for your climate.
Federal Residential Solar Tax Credit Repealed
The 30% residential solar tax credit (Section 25D) was repealed in early 2026. Homeowners who installed solar before the repeal can still claim the credit. Commercial projects retain the 30% ITC under Section 48/48E. Solar can still pay for itself through electricity savings alone.
Sun Hours/Day
4.4 hrs
Good Solar Irradiance
8 kW System Cost
$25,200
$3.15/watt installed
Federal Residential ITC
Repealed
Section 25D (early 2026)
Annual Savings
$1,670
12,848 kWh/year
Payback Period
15.1 yrs
then free electricity for 15-20+ yrs
Solar Irradiance in Mississippi (2026)
Mississippi receives an average of 4.4 peak sun hours per day annually, equivalent to roughly 1606 kWh/m² per year of global horizontal irradiance (GHI). Summer peaks reach about 5.7 h/day, while winter lows drop to around 2.6 h/day.
This places Mississippi in the good solar irradiance band compared with other US states. At 4.4 kWh/m²/day, each 1 kW of rooftop solar in Mississippi generates approximately 1,253 kWh/year (assuming 78% system performance after inverter, soiling, and temperature losses), which makes an 8 kW system produce around 12,848 kWh per year.
Data source: NREL National Solar Radiation Database (NSRDB), 1998-2020 typical meteorological year averages. Mississippi (MS) values reflect the statewide average; coastal, mountain, and desert microclimates can vary by ±15% from this figure.
Mississippi Solar Incentives (2026)
Federal residential tax credit was repealed in early 2026. Mississippi continues to offer the following state and utility-level programs:
| Incentive | Value | Eligibility | Deadline | Source |
|---|---|---|---|---|
| Federal Section 25D ITC | 0% (Repealed Q1 2026) | N/A | Was 12/31/2025 | IRS |
| Net metering (limited utilities) | — | — | Verify with state agency | DSIRE |
| Solar Access Rights | — | — | Verify with state agency | DSIRE |
| PACE financing | — | — | Verify with state agency | DSIRE |
⚠ Always verify state incentive deadlines, caps, and eligibility before signing a solar contract — programs change annually and many have annual funding caps that exhaust mid-year.
Major utility companies in Mississippi
Check your utility's net metering policy, interconnection requirements, and rate structure before installing — rules vary significantly within Mississippi:
- • Entergy Mississippi
- • Mississippi Power (Southern Co.)
- • TVA service area co-ops
Each utility has different rate structures, net metering caps, and time-of-use schedules. Visit your utility's website for current solar interconnection requirements and queue times.
Net metering in Mississippi
Status: Net metering (Mississippi Power & Entergy; Distributed Generation rule)
Export rate: Avoided-cost + 2.5¢/kWh adder for low-income
System size cap: 20 kW residential
⚠ NEM rules can be amended by state public utility commissions and individual utilities — verify with your utility before committing. Caps and rates shown reflect the most common residential tariff as of 2026.
Solar Incentives in Mississippi
Federal Residential ITC (Section 25D) -- Repealed
The 30% federal residential solar tax credit (Section 25D) was repealed in early 2026. Homeowners who installed solar before the repeal may still claim the credit for that tax year. Commercial solar projects continue to receive the 30% ITC under Section 48/48E.
Top 3 Recommended Solar Panels for Mississippi
Mississippi's 4.4 peak sun hours/day provides solid solar potential. These panels deliver the best performance:
| Panel | Wattage | Efficiency | Temp Coeff | Warranty |
|---|---|---|---|---|
| LONGi Hi-MO 7 620W | 620W | 23% | -0.28%/°C | 12/30 yr |
| LONGi Hi-MO 7 590W | 590W | 22.8% | -0.28%/°C | 12/30 yr |
| Trina Solar Vertex N+ 600W | 600W | 22.8% | -0.28%/°C | 15/30 yr |
Top 3 Recommended Batteries for Mississippi
Pairing solar with battery storage provides backup power during outages and can optimize savings with time-of-use rates:
| Battery | Capacity | Power | Chemistry | Warranty |
|---|---|---|---|---|
| HomeGrid Stack'd Series 38.4kWh | 38.4 kWh | 34.4 kW | LFP (Lithium Iron Phosphate) | 10 yr |
| HomeGrid Stack'd Series 28.8kWh | 28.8 kWh | 25.8 kW | LFP (Lithium Iron Phosphate) | 10 yr |
| BYD Battery-Box Premium HVM 22.1 | 22.08 kWh | 22.08 kW | LFP (Lithium Iron Phosphate) | 10 yr |
Frequently Asked Questions
How much do solar panels cost in Mississippi in 2026?
The average cost of an 8 kW solar system in Mississippi is approximately $25,200 ($3.15/watt installed). Note: The federal residential solar tax credit (Section 25D) was repealed in early 2026, so the full system cost applies unless state incentives are available. Get 3-5 quotes from local installers for accurate pricing.
Is the federal solar tax credit available in Mississippi?
The federal residential solar tax credit (Section 25D) was repealed in early 2026. Homeowners who installed solar before the repeal can still claim the credit for that tax year. Commercial solar projects continue to receive the 30% ITC under Section 48/48E. While Mississippi does not have state-level solar tax credits, property tax exemptions and net metering may still provide savings. Consult a tax professional for the latest guidance.
Is solar a good investment in Mississippi?
With 4.4 peak sun hours/day, Mississippi has good solar potential. An 8 kW system costs approximately $25,200 and can pay for itself in about 15.1 years through electricity savings. After payback, you enjoy 15-20+ years of essentially free electricity.
How much can I save with solar in Mississippi?
An 8 kW solar system in Mississippi produces approximately 12,848 kWh/year, saving about $1,670 annually. The estimated payback period is 15.1 years. Over 25 years, total savings can reach $41,750.
Does Mississippi have net metering?
Net metering policies vary by utility in Mississippi. Most states offer some form of net metering or net billing that credits solar homeowners for excess electricity sent back to the grid. Contact your local utility or check the DSIRE database for current Mississippi net metering policies.
What is the best solar panel for Mississippi?
For Mississippi with 4.4 sun hours/day, high-efficiency panels are the best choice to maximize energy production. Look for panels with efficiency ratings above 21%.
What is the payback period for solar in Mississippi?
The estimated payback period for an 8 kW solar system in Mississippi is 15.1 years. This is calculated as: system cost ($25,200) divided by annual savings ($1,670/year). After payback, solar generates essentially free electricity for 15-20+ more years.
Do I need a battery for solar in Mississippi?
A battery is not required for grid-tied solar in Mississippi, but it provides backup power during outages and can increase savings with time-of-use rate optimization. Battery prices continue to decline, making storage increasingly cost-effective.
Does Mississippi have solar incentives?
Mississippi currently has limited state-level solar incentives, and the federal residential ITC (Section 25D) was repealed in early 2026. Solar can still pay for itself through electricity savings alone in 15.1 years.
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