Honest numbers · McDonough, GA
How much do solar panels cost in McDonough, GA?
The short answer · as of August 2026
Solar in the McDonough area costs about $2.59 per watt installed before incentives as of August 2026. A system near our ~9.5 kW average runs roughly $24,605 gross and about $24,605 once $no Georgia state tax credit is fully claimed. Payback depends on your Snapping Shoals EMC rate and on how much production you use on site, so we model it from your own bill rather than publishing a market average.
Local pricing reality
What drives price in McDonough
McDonough is the market where the honest cost conversation starts with whether to build at all. Snapping Shoals EMC is reported to credit exported power well below retail under net billing rather than net metering, and on terms like that a system sized to your annual consumption is simply the wrong system. Capacity you cannot consume is capacity you are close to giving away.
That inverts the usual sales logic. Bigger is not better here, and a quote that sizes to your roof or your annual bill rather than to your daytime load has not been built against Henry County. What we price instead is the array your household can actually absorb, plus, where it earns its place, the storage that lets the evening run on the afternoon.
The rest is ordinary. Permitting splits between the City of McDonough and Henry County depending on the address, the newer subdivisions carry HOA guidelines we prepare for, and the roof stock across those subdivisions is modern enough that structural work is light.
Written for McDonough specifically. Your own roof, bill and meter still decide the answer, which is what the free assessment settles.
The numbers
What a system costs in McDonough, by size
Priced at the local $2.59 per watt benchmark (August 2026) and shown before and after $no Georgia state tax credit. These are worked examples to set expectations, not a quote, and not a promise of savings.
| System size | Cost before incentives | State credit | Net after credit |
|---|---|---|---|
| 6 kW | $15,540 | No state credit available | $15,540 |
| 9.5 kW Closest to our ~9.5 kW average system | $24,605 | No state credit available | $24,605 |
| 12 kW | $31,080 | No state credit available | $31,080 |
| 15 kW | $38,850 | No state credit available | $38,850 |
Note the third column carefully. The credit is 25% of system cost but capped at $3,500 per tax year, so a larger system is claimed across several returns rather than all at once. Most pages quoting "25% off" skip this, and it is the most common reason homeowners feel misled later. See exactly how the credit is claimed.
Sizing
Why the calculators overstate your system and your savings
National cost calculators model a 14.48 kW system for the McDonough market. Across our combined install experience, the average is about 9.5 kW. That gap is not a rounding difference. It is roughly a third of the system, and it distorts every downstream figure those calculators show you.
An oversized system costs more up front, and because Snapping Shoals EMC credits exported power at set by the cooperative rider, confirmed per account rather than at retail, the extra production it generates is worth far less than the panels cost. Sizing past your own consumption is the fastest way to make a payback period worse.
So we size to your actual bill, not to our margin. That usually means a smaller system than you were quoted elsewhere, a lower price, and a shorter payback. It also means the savings estimate we give you is one we can defend line by line.
Every system carries our lifetime full-system and roof-penetration warranty, on top of the 25-year manufacturer warranty and 10-year workmanship coverage.
The part competitors leave out
Your utility sets your payback more than your panels do
Most McDonough homes are served by Snapping Shoals EMC , though Georgia Power and Central Georgia EMC serve parts of Henry County. Under its cooperative export-credit rider programme, the older one-for-one net metering ended for new residential systems on December 31, 2025. What replaced it changes the entire economics of a rooftop system, and it is why a single national payback figure for McDonough is meaningless.
About these rates in McDonough
Snapping Shoals EMC is reported to use net billing rather than traditional net metering, crediting exported energy at a rate well below retail with credits applied monthly and no annual true-up. We have NOT read that figure off the cooperative’s own current schedule, and we recently had to retract a different Georgia cooperative rate taken from a third-party summary, so we treat it as reported rather than established and confirm it in writing before modelling. What is not in doubt is the direction: on a credit that far below retail, exporting power is close to giving it away, and the only designs that work here are ones sized to what you use as you make it.
The mechanic is simple. Power you consume the moment you generate it offsets electricity you would have bought at set by the cooperative board, confirmed against your own bill. Power you export earns only set by the cooperative rider, confirmed per account, and So a home that runs its air conditioning, pool pump and laundry during daylight gets a materially better return than an identical home that uses most of its power after dark.
2026 incentives
What reduces this price this year
The net column above already applies $no Georgia state tax credit. Two things worth knowing about it: the $3,500 annual cap means larger systems are claimed across more than one tax return, and the credit is non-refundable, so it is limited by your state tax liability.
The 30% federal credit expired for systems placed in service on or after 1 January 2026. If a quote you are comparing still applies it, that quote is wrong by thousands.
Snapping Shoals EMC runs no upfront residential rebate, so there is nothing to stack on top of the state credit in McDonough. We would rather say that plainly than let you find out after signing.
Incentives specific to McDonough · statewide mechanics and worked examples · financing
Line items
The eight things that move a McDonough quote
Two houses on the same street can differ by several thousand dollars for reasons that have nothing to do with panel brand. These are the drivers, in roughly the order they matter here.
- 01
Roof condition and remaining life
The single biggest swing factor in McDonough. Panels last decades, so putting them on a roof with five years left means paying to remove and reset them later. If a replacement makes sense first, we say so and can coordinate it as one project.
- 02
Roof material and pitch
Asphalt shingle is the straightforward case. Standing-seam metal is often cheaper to mount because it clamps rather than penetrates. Tile, slate and very low-slope membrane roofs cost more in labour and flashing detail.
- 03
Shading
A mix of established wooded neighbourhoods and the newer open subdivisions that have driven Henry County growth. Heavy shade may push you toward microinverters or optimisers, which adds cost but recovers production.
- 04
Electrical panel and meter
An older or fully-loaded service panel may need an upgrade before a system can be interconnected. This is a real line item and one of the most common surprises on cheap quotes that skipped a site visit.
- 05
Mounting and structural review
Inland. No salt exposure and lower wind loading than the coast, with largely modern roof stock across the newer subdivisions. That work is what our lifetime roof-penetration warranty stands behind.
- 06
Architectural review and HOA rules
Permitting splits between the City of McDonough and Henry County depending on the address. Newer subdivisions commonly carry HOA architectural guidelines, which we prepare as part of the install. Where visibility is restricted, the compliant layout is sometimes not the cheapest one. We design for approval first, then optimise production within those limits.
- 07
Ground mount instead of roof
If the roof genuinely will not work, a ground-mounted array needs trenching, racking and a zoning review, so it typically costs more per watt than a straightforward roof install.
- 08
Battery storage
Optional, and it changes the maths rather than just adding to it. Under cooperative export-credit rider export credits, storing power to use later is worth more than exporting it.
Roof age is the one we raise most often, and the one homeowners least want to hear. See how we handle roof-first projects.
Paying for it
Cash, loan, and the Georgia trap
Cash gives the shortest payback and clean ownership. A loan spreads the cost and can sit near your current McDonough bill, but ask for the cash price and the financed price side by side: a low advertised rate is often bought with a dealer fee of several thousand dollars folded into the system price.
The Georgia-specific trap: there is no state credit here to arrive at all. Any loan structured around a large first-year tax payment is built on money that is not coming, and that is a question to put to the lender in writing before you sign.
The honest part
When solar is not worth it in McDonough
We would rather tell you now than after you have paid for a design
- Your household is out during daylight and you do not want storage. On a cooperative export credit this far below retail, that is the clearest no in our whole territory and we will say so.
- Mature canopy shades your best roof planes for much of the day.
- Your roof needs replacing within about five years.
- You were counting on a lease or power purchase agreement, which are generally not available to Georgia EMC members.
If two or more of these describe your home, we will say so during the assessment and we will not design a system to talk you past them. That is the whole point of a free, no-pressure assessment. If circumstances change, we will still be here.
Real systems
What we have actually built
Our team brings 30+ years of combined experience and roughly 450 combined experienced solar PV installs, averaging about 9.5 kW. You can see real photographs of those systems on the homepage gallery. Those photographs are South Carolina installations, and we label them that way rather than implying local history we have not yet built here.
We are not going to publish a banded price against a specific job and imply it is your price, because the drivers above make that misleading. What we will do at the assessment is walk you through comparable systems we have installed, with the actual figures.
Install photos on this site are real job photography without invented city captions or fabricated price bands. Named reviews appear only when customers give permission, see our reviews page for how we handle proof.
McDonough solar cost FAQ
Straight answers on what solar costs in McDonough
How much do solar panels cost in McDonough, GA?
As of August 2026, solar in the McDonough area runs about $2.59 per watt installed before incentives. A system close to our ~9.5 kW average works out to roughly $24,605 gross, or about $24,605 once no Georgia state tax credit is fully claimed. Your own number depends on your roof, your usage and your utility.
Is there still a 30% federal tax credit for solar in McDonough?
No. The federal residential clean energy credit (Section 25D) expired for systems placed in service on or after January 1, 2026. Many pages online still advertise it. Georgia has no state income tax credit for residential solar, and the federal residential credit expired for systems placed in service on or after 1 January 2026. The strongest remaining lever here is the export credit your utility pays.
What is the payback period on solar in McDonough?
We will not publish a payback figure for McDonough that we cannot stand behind, because Snapping Shoals EMC's residential rate needs confirming against your own bill. What is certain is that exported power credits at set by the cooperative rider, confirmed per account, well below retail, so the share of production you use on site drives your payback more than any equipment choice. At the assessment we model it against your actual rate.
Why is your average system smaller than the 14.48 kW the calculators show?
Because we size to your bill rather than to a sales quota. National cost calculators model 14.48 kW for this market, which inflates both the price and the projected savings for a typical home. Our combined install experience averages about 9.5 kW. A smaller correctly-sized system usually pays back faster than a larger one you were upsold.
Do you charge for a quote or a site assessment in McDonough?
No. The assessment is free and there is no obligation. We look at your roof, your actual usage history and your utility rate, then give you real figures for your address. If solar is a poor fit for your home, we will tell you that instead of designing a system anyway.
Does a solar system add to my property taxes in McDonough?
Georgia property-tax treatment of solar is genuinely unsettled: reputable sources describe a $25,000 exemption, a full exemption and no statewide exemption. Confirm with the Georgia Department of Revenue and your county assessor rather than relying on any figure printed online. Confirm your own situation with Henry County and a tax professional, since eligibility depends on your circumstances.
Free, no-pressure assessment
Get real numbers for your McDonough roof
We will confirm your utility, measure your roof, read your actual usage history, and give you honest figures, with no guaranteed-savings math and no pressure.
Mon–Sat, 10am–6:30pm ET · We typically follow up within the hour.