MS · Solar

Solar quotes in Hattiesburg, MS.

One real quote from a vetted local Hattiesburg 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 Hattiesburg

One feature of the Mississippi arrangement deserves more attention than it gets, because it is rare. The Distributed Generation Benefits Adder of 2.5 cents per kWh is grandfathered for 25 years, and the low-income benefits adder is grandfathered for the same period. Twenty-five years is close to the working life of a solar system, so a Hattiesburg customer enrolling now carries those terms for essentially the whole life of the array.

Why long grandfathering is worth so much

In Utah the export credit is recalculated every March and the new rate applies to existing customers, so nobody locks in a rate at all. In Louisiana the avoided cost rate is republished annually by utility. In Iowa a value of solar review is written into statute.

Mississippi grandfathers its adders for 25 years. That removes a category of risk that homeowners in several other states carry for the entire life of their system.

It does not fix the underlying avoided cost component, which is a separate matter, but the adders sitting on top of it are locked.

For a twenty-five year purchase, certainty about the compensation terms is worth real money even when the terms themselves are modest.

What to confirm about your own grandfathering

Ask which adders apply to your project and confirm in writing that the 25-year grandfathering attaches from the date your net metering service begins.

Ask what happens to the grandfathered terms if you sell the house, and what the new owner has to do to preserve them. An arrangement that does not survive a transaction is worth less than it appears.

Ask whether the grandfathering covers only the adders or the whole export credit including the avoided cost base. Those are different, and a projection assuming the whole figure is fixed may be overstating certainty.

Ask what the projection assumed about the avoided cost component over the term, since that is the part that can still move.

Certainty does not change the design brief

Even with adders locked, an exported kilowatt hour at 5.5 or 7.5 cents is worth well under half of one consumed at the roughly 16 cent retail rate.

So the design should still be built around what your household consumes during daylight rather than around your annual total.

Ask what percentage of your annual usage the system covers and what share of generation the model expects you to consume directly, and ask for a smaller system modelled alongside.

Heavy summer air conditioning helps considerably here, because it absorbs generation at the full retail rate exactly when the array produces most. Pre-cooling on hot afternoons extends that at no cost.

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 in Hattiesburg receives no federal tax credit, 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, an export credit built from avoided cost plus adders grandfathered for 25 years, and the electricity you stop buying at around 16 cents per kWh.

Ask for the grandfathering confirmed in writing, the avoided cost assumption stated separately, and the self-consumption share shown on the page.

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

How long are the Mississippi solar adders guaranteed?

The Distributed Generation Benefits Adder of 2.5 cents per kWh is grandfathered for 25 years, and the low-income benefits adder is grandfathered for the same period, which is close to the working life of a solar system.

Why does that matter?

Because several states reset export compensation annually and apply the new rate to existing customers, so their homeowners carry that risk for the life of the system. Mississippi customers largely do not.

Is the whole export credit locked?

Ask specifically. The adders are grandfathered, but the avoided cost base they sit on is a separate component that can still move. A projection assuming the whole figure is fixed may be overstating certainty.

Does the certainty change how I should size the system?

No. An exported kilowatt hour at 5.5 or 7.5 cents is still worth well under half of one consumed at the roughly 16 cent retail rate, so build around your daytime consumption rather than your annual total.