A 3,500 square foot home in Mississippi typically uses about 1,691 kWh per month at the state average rate of 12.2¢/kWh (EIA). With 5.2 peak sun hours per day, most homeowners need a 13.0 kW solar system — roughly 33 panels at 400W. After the 30% federal ITC, net cost is about $27,400, with 12.7-year payback and $62,900+ in estimated 25-year savings.
Content roles: This page is your Mississippi-specific sizing decision for 3,500 sq ft. For national methodology and roof/orientation depth, see the 3,500 sq ft national guide. For bill-based sizing, see $300/month (~$206/mo equivalent in Mississippi). Policy depth: Mississippi solar data.
⚡ System Size
How Many Solar Panels for a 3,500 sq ft House in Mississippi?
Mississippi electricity rates and sun hours change panel count versus the US average:
System size (kW) = Annual kWh ÷ (Peak sun hours × 365 × 0.82)
For 3,500 sq ft in Mississippi:
Estimated monthly usage: ~1,691 kWh
Peak sun hours: 5.2 h/day
System size:13.0 kW (~33 × 400W panels)
Metric
Mississippi
US average
Rate
12.2¢/kWh
16.3¢/kWh
Sun hours
5.2 h/day
4.5 h/day
System size
13.0 kW
15.1 kW
Panels (400W)
33
38
Mississippi requires a smaller system than the national average for the same square footage. Use our solar system size calculator with your actual utility bills for a precise ZIP-level result.
Find your exact solar savings
Enter your ZIP code for a personalized estimate using your state's electricity rate and sun hours.
💰 System Cost
What Does Solar Cost for a 3,500 sq ft Home in Mississippi After the ITC?
At $3.00/W installed (SEIA 2026), a 13.0 kW system in Mississippi costs about $39,100 before incentives. The 30% ITC saves ~$11,730, for $27,400 net cost.
📈 Payback Period
How Long Is Solar Payback on a 3,500 sq ft Home in Mississippi?
A 13.0 kW system saving ~$2,154/year pays back in about 12.7 years after the ITC. At 3% rate escalation, 25-year utility spend totals ~$90,300 vs $27,400 net solar — $62,900+ lifetime advantage.
Solar vs utility company · 25-year comparison
Total cost of staying on the grid vs owning solar for a $300/month bill (national average assumptions).
Mississippi Solar Incentives for a 3,500 sq ft Home
Mississippi does not offer a state solar incentive. Mississippi Power and Entergy Mississippi offer net metering programs. Mississippi’s relatively low electricity rates reduce the financial urgency for solar, but the federal 30% ITC still provides substantial savings on any installation.
At Mississippi's average rate of 12.2¢/kWh and 5.2 peak sun hours, a 3,500 sq ft home (~1,691 kWh/month) typically needs a 13.0 kW system — about 33 panels at 400W. See the [national 3,500 sq ft guide](/guides/how-many-solar-panels-3500-sq-ft-house/) for methodology.
A 13.0 kW system in Mississippi costs roughly $39,100 installed before incentives. The 30% federal ITC reduces net cost to about $27,400. Mississippi does not offer a state solar incentive. Mississippi Power and Entergy Mississippi offer net metering programs. Mississippi's relatively low electricity rates reduce the financial urgency for solar, but the...
At $27,400 net cost and ~$2,154/year in bill savings, simple payback in Mississippi is about 12.7 years.
Most Mississippi homeowners in this size range see **$62,900+** estimated 25-year savings vs utility power. Equivalent monthly bill: **~$206** — compare the [$300/month bill guide](/guides/solar-panels-300-month-electric-bill/) for bill-based sizing.
The US average needs a 15.1 kW system at 11.0-year payback. Mississippi needs 13.0 kW with 12.7-year payback at 12.2¢/kWh and 5.2 sun hours.
$300/month electric bill by state
System size and payback vary by electricity rate and sun hours — see your state.