MS · Solar

Solar quotes in Biloxi, MS.

One real quote from a vetted local Biloxi installer, sized to your roof, your bill, and every federal + state rebate you qualify for.

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7.5 kW
Average system size: $2.80/W
Average cost (USD): 13 yrs
Average payback: 35+
Local installers

Why solar in Biloxi

On the Mississippi coast, a battery is a resilience purchase first and a savings device second, and both parts are real. Hurricanes take the power down here for days at a time, and solar panels alone do nothing about that. Meanwhile the gap between the roughly 16 cent retail rate and a 5.5 cent export credit means storage that shifts generation into evening use is doing genuine arbitrage rather than only buying peace of mind.

What solar alone does in an outage

Nothing. A standard grid-tied inverter disconnects when the grid goes down, so that the array does not energise lines utility crews believe are dead.

After a storm, a house with panels on the roof and no battery is as dark as one without. That surprises more homeowners than any other fact about solar and it is worth stating plainly.

Backup requires a battery plus an inverter and switching arrangement designed for it. It should appear in a quote as specified equipment rather than as an assurance.

Ask precisely which circuits would be backed up and for how long under a realistic load, and say explicitly whether air conditioning needs to be on that list. On the Gulf Coast in summer that is not a small question.

Sizing for a multi-day outage

A battery sized for an evening and one sized to ride out several days without grid power are different products at different prices.

The favourable factor after a hurricane is that the days following are often sunny, so a battery paired with solar can recharge each day rather than draining once and stopping.

The unfavourable factor is load. Air conditioning in a Gulf Coast summer is a heavy continuous draw, and a battery that comfortably runs a fridge, lights and fans may not run cooling for long.

Ask for the backup scenario modelled explicitly: which loads, for how many days, with what daily solar recharge assumed. That converts a promise into a specification you can check.

And what it does the rest of the time

Exported electricity earns 5.5 cents per kWh under the current Entergy Mississippi figure, or 7.5 with the income adder, against a retail rate around 16 cents.

A battery captures midday generation that would otherwise be exported at that rate and releases it in the evening, upgrading each of those kilowatt hours to the retail rate you would otherwise pay.

That gap makes the everyday arbitrage genuine here, unlike in a retail-rate net metering state where an exported and a consumed kilowatt hour are worth the same.

Ask for the system priced and modelled with and without storage so the incremental cost and value both appear, and ask how the configuration balances everyday cycling against holding charge in reserve for storm season.

What the arithmetic actually rests on

The 30 percent federal Residential Clean Energy Credit under Section 25D expired for property placed in service after December 31, 2025, so a cash or loan purchase receives no federal tax credit on the panels or the battery, and Mississippi has no state solar tax credit.

Section 48E survives at 30 percent for third-party owners under leases and power purchase agreements, so ask what a provider claims and what reaches you in the rate.

What exists is retail value for self-consumed generation, the layered export credit for what you send to the grid, and 25-year grandfathering on the adders.

Ask for the backup scenario specified as circuits and days, the battery arbitrage shown separately from the resilience benefit, and coastal hardware specifications confirmed.

Incentives & rebates

Net metering: Avoided cost plus adders, grandfathered 25 years

Mississippi does not offer retail-rate net metering. Exported electricity is credited at the utility avoided cost rate plus a Distributed Generation Benefits Adder of 2.5 cents per kWh, and a Public Service Commission order in January 2025 updated the Entergy Mississippi tariff to 5.5 cents per kWh for customers not eligible for the low-to-moderate income adder and 7.5 cents for those who are. Against a Mississippi residential rate around 16 cents per kWh on recent EIA figures, an exported kilowatt hour is worth roughly a third of one consumed as it is generated, or a little under half with the income adder applied. Two features make this arrangement better than a bare avoided-cost regime. First, the adders are grandfathered for 25 years, which is close to the working life of a system, so a customer enrolling now is not exposed to annual revision the way Utah or Louisiana customers are. Second, the low-to-moderate income adder is genuinely accessible: eligibility has been expanded to households with annual income up to 250 percent of the federal poverty level, which in Mississippi reaches a large share of households, though the additional 2 cents per kWh is limited to the first 1,000 qualifying customers to install and runs 15 years from the start of net metering service. The design conclusion is the familiar one for an avoided-cost state: build around what your household consumes during daylight, shift flexible loads into the generating window, and treat storage as doing real arbitrage rather than only providing backup.

Related Mississippi resources

Mississippi solar incentives & rebates Full breakdown of federal, provincial, and utility programs.

How payback works in Mississippi

System cost: $21,000
Estimated net cost: $21,000
Estimated payback: ~13.0 years
25-year net savings: ~$19,500

These figures are illustrative; your actual quote reflects your roof, sun exposure, and local utility rates.

Frequently asked questions

Will my solar keep the lights on after a hurricane?

Not on its own. A grid-tied inverter disconnects when the grid goes down so it cannot energise lines crews believe are dead. Backup requires a battery plus an inverter and switching arrangement designed for it.

How long can a battery run my house?

It depends on which loads and how much daily solar recharge. Ask for the backup scenario modelled explicitly: which circuits, for how many days, with what recharge assumed, and whether air conditioning is on the backed-up list.

Does a battery pay for itself in Mississippi?

It does real work. Exports earn 5.5 cents per kWh, or 7.5 with the income adder, against a retail rate around 16 cents, so a battery moving midday generation into evening use upgrades those kilowatt hours substantially.

Can it do backup and savings at once?

Partly, and they pull against each other, since capacity held in reserve for a storm is capacity not being cycled for savings. Ask how the configuration balances the two and whether you can set the reserve level.