Solar panels: are they actually worth it for your home? Here's the math
The 30% federal tax credit just expired — which makes it more important than ever to run the numbers honestly.
There has never been a worse time to coast on outdated solar advice. The decision looked straightforward for years: install panels, claim a 30% federal tax credit, break even in 6-8 years, collect free electricity for the next two decades. That calculation changed on July 4, 2025, when President Trump signed the One Big Beautiful Bill Act into law, eliminating the residential solar tax credit (Section 25D) seven years ahead of its original schedule. For new installations in 2026, homeowners buying their own systems get no federal credit. None.
That’s a significant shift, and any solar company still leading with the old 30% pitch is, charitably speaking, working from an outdated script. The honest version is more nuanced. Solar can still make very good financial sense for a lot of homeowners. It just requires running the actual numbers for your house, not the numbers from a brochure written in 2023.
Here’s the math, the honest caveats, and the framework to decide for yourself.
What a solar system actually costs in 2026 ☀️💰🏠
Before tax credits and incentives, a typical residential solar installation runs between $20,000 and $30,000. According to Lawrence Berkeley National Laboratory’s 2024 data on one of the largest US solar datasets, the median price of solar was $3.50 per watt for cash purchases. A 7-kilowatt system, which covers the average US household’s electricity needs, lands around $24,500 at that rate before any incentives.
Without the federal credit, that’s the full number most buyers are looking at now. The credit previously knocked off $6,000-$9,000 from that bill; it’s gone for direct purchases in 2026. That makes state and local incentives more important than they’ve ever been.
What’s still available depends heavily on where you live:
Solar tax credits remain in Arizona, Hawaii, Massachusetts, New Mexico, New York, and South Carolina
Net metering programs let you sell excess solar energy back to the grid; states with full retail-rate net metering dramatically shorten payback times
Utility rebates vary widely; check your specific provider, not just your state
Solar leases and PPAs (power purchase agreements): under these structures, a solar company owns the system, claims the surviving commercial tax credit (Section 48E, active through 2027), and typically passes that discount to you as a lower monthly payment or reduced upfront cost
The lease/PPA route gets complicated when you sell your home, because buyers inherit the contract. More on that in a moment. But for homeowners who want lower upfront costs and no maintenance headaches, it’s worth understanding.
How the payback math actually works 📊⚡🔢
The payback period is the single most important number in this whole conversation. It tells you how many years of electricity savings cover the cost of the system, after which every unit of solar energy is effectively free.
The formula, which the US Department of Energy uses in its own savings guide, is simple: take the total system cost after any incentives, then divide by your estimated annual electricity savings. That’s your payback period in years. If the answer is shorter than the panel warranty, which is typically 25-30 years, you come out ahead.
What the formula depends on:
Your current electricity rate: the higher your rate, the more each unit of solar energy is worth. The EnergySage solar cost database shows that homeowners in states like California, Massachusetts, and New York save $3,000-$4,000+ per year, while homeowners in low-rate Midwestern states save $1,200-$1,800
Local electricity rate trends: US electricity rates have risen an average of 2.8% per year over the past 25 years, according to SolarReviews. California has seen up to 10% per year recently. Every time your utility raises rates, your solar system becomes worth more
How much sun your roof gets: a south-facing roof at 30-40 degrees in Arizona gets dramatically more production than an east-facing roof in Seattle
Net metering policy in your state: selling excess power back at retail rates versus wholesale rates can double or halve your effective savings
Without the federal credit, the average US payback period stretches to somewhere between 9 and 14 years for a cash purchase, depending on your state. In high-rate states like California and New York, it’s still often under 10 years. In states with low electricity prices and no state incentives, the math may not work at all. Have you checked your state’s current solar incentives? Running this as a genuinely personal calculation, rather than accepting someone else’s average, is the only version of this decision worth making.
The home value argument: real, but only if you own ♻️🏡📈
One of the better arguments for solar, and one that often gets undersold, is its impact on your home’s resale price. A 2025 SolarReviews study that compared over 400 recently sold homes across 36 states found that homes with solar panels sold for an average of 6.9% more than comparable homes without. With the median US home value at roughly $416,900 in 2025, that’s an extra $28,000 in sale price.
Lawrence Berkeley National Laboratory puts it differently: buyers are willing to pay approximately $4 per watt of installed solar capacity, and the Lab’s research also suggests that every $1 in annual electricity savings generates roughly $20 in added home value. A system saving you $2,000 per year adds $40,000 to your home’s market value. That’s a meaningful number, and it applies in addition to the electricity savings.
There’s a catch that deserves to be stated plainly. This home value premium only applies if you own the system outright, either through a cash purchase or a solar loan. Leased systems and PPAs do not consistently add home value, according to the same SolarReviews data. Some buyers actively avoid homes with third-party solar contracts because they don’t want to inherit the payment obligations. If home value is part of your financial case for going solar, a lease is the wrong structure.
The combination of electricity savings and home value appreciation is what makes owned solar a genuinely interesting investment compared to other home improvements. A kitchen renovation typically doesn’t pay for itself in any measurable way. A well-sited, owned solar system usually does.
When solar genuinely doesn’t make sense 🚫☁️🔍
This is the section most solar company websites skip, and it’s the one worth reading most carefully.
Solar doesn’t work well, and may not work economically at all, in these situations:
North-facing roof: north-facing panels receive almost no direct sunlight in the Northern Hemisphere. Earth911’s solar analysis puts it plainly: “We don’t recommend installing panels on the north side of your roof.” Production drops to 50-85% compared to south-facing panels even in the best cases, and payback periods extend dramatically
Heavily shaded roof: trees, chimneys, neighboring buildings, and dormers all cut production. A roof that doesn’t get at least 4-5 hours of direct sunlight daily is a poor candidate for rooftop solar
Roof that needs replacement: solar panels have 25-30 year warranties. If your roof needs replacement in 5-7 years, you’ll have to pay to remove and reinstall the panels on top of the roofing cost. Install solar after the new roof, not before
Low electricity rates: if your utility charges under 10-12 cents per kilowatt-hour, the savings per unit of solar energy are modest, and payback periods stretch out substantially. Parts of the Midwest and Southeast sit in this category
Moving within 5-7 years: even accounting for the home value premium, a cash purchase may not pay back before you sell, and transferring or buying out a solar lease at closing adds friction to the sale process
Renters are largely out of luck with rooftop solar, but community solar programs let you subscribe to a share of a local solar array and receive bill credits without owning or renting the roof. These programs are growing, and they’re worth investigating if you don’t own your home. Our guide to sustainable upgrades for apartment dwellers covers community solar alongside other options that don’t require owning a roof.
How to actually run this calculation for your home 🧮🌱💡
The good news is that this isn’t guesswork. The EPA’s household carbon footprint calculator gives you a sense of your home’s overall energy profile, but for solar specifically, EnergySage’s solar marketplace lets you get real quotes from certified installers and compare them against your actual electricity bills. Pull three quotes minimum, not one.
The specific steps that will give you a real answer:
Find 12 months of electricity bills and note your total annual kilowatt-hour usage and your cost per kilowatt-hour
Check your roof orientation using Google Maps satellite view; south-facing and unshaded is the baseline
Research your state’s current solar incentives at the Database of State Incentives for Renewables and Efficiency (DSIRE)
Ask each installer specifically about net metering policy with your utility, since it varies even within states
Get itemized quotes that break out equipment, labor, permitting, and any warranty costs separately
Calculate your own payback: (total cost after incentives) ÷ (annual electricity savings) = years to break even
In high-rate states with good sun, owned solar remains one of the better financial decisions a homeowner can make in 2026 — even without the federal credit. In low-rate states with challenging roofs, it may simply not add up. The honest answer depends on your specific numbers, not on anyone’s national average. If you’ve already been working on reducing home energy use before going solar, some of these energy efficiency moves for renters and homeowners shrink the system size you’d need, which shrinks your upfront cost and speeds up the payback.
The best time to install solar was probably last year, before the federal credit expired. The second-best time is right after you’ve run the actual math for your house and confirmed the numbers work. Have you looked up your state’s current incentives yet?