Scenario: a 1,200 sq ft home. Assumes 3%/yr rate increases, 0.5%/yr panel degradation and no federal tax credit (the 30% §25D credit ended for systems installed after Dec 31, 2025). How we calculate
Data approachEIA rates · NREL sun hours · 2026 federal policy · methodology
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A typical 3 kW solar system for a mobile home costs about $7,800–$10,500 in 2026 before incentives, or roughly $2.60–$3.50 per watt. Smaller 2 kW systems start near $5,200, and 6 kW systems for larger homes run up to about $21,000. The 30% federal homeowner tax credit (Section 25D) ended on December 31, 2025, so most cash and loan purchases now receive no federal credit. Three factors decide whether solar pays off: your local electricity rate, your roof’s condition and load capacity, and any state incentives.
⚡ System Size
How Much Do Solar Panels Cost for a Mobile Home in 2026?
According to the U.S. Energy Information Administration’s 2020 Residential Energy Consumption Survey, mobile homes use about 61 million Btu of total energy per year, roughly 20% less than the 77 million Btu average for all U.S. homes. Their electricity use works out to roughly 12,000 kWh per year (about 1,000 kWh per month), though your own bill can vary widely with climate, heating fuel and air conditioning. Check a recent bill before choosing a system size.
Installed residential solar averaged about $2.58 per watt on the EnergySage marketplace in early 2026, while the Lawrence Berkeley National Laboratory’s Tracking the Sun report put the 2024 median cash price near $3.50 per watt. Small systems usually cost more per watt, so this guide uses $2.60–$3.50 per watt as its range.
Mobile Home Solar Panel Cost by System Size (2026, Before Incentives)
System Size
Estimated Cost
Estimated Output*
Share of ~12,000 kWh/yr
Best For
2 kW
$5,200–$7,000
~2,600 kWh/yr
~22%
Small single-wide, low usage
3 kW
$7,800–$10,500
~3,900 kWh/yr
~33%
Average single-wide
4 kW
$10,400–$14,000
~5,200 kWh/yr
~43%
Large single-wide / small double-wide
6 kW
$15,600–$21,000
~7,800 kWh/yr
~65%
Double-wide with central AC
*Output assumes about 1,300 kWh per kW per year, a mid-range figure. Real output ranges from roughly 1,000 kWh/kW in cloudy regions to 1,800 kWh/kW in the Southwest. Use NREL’s PVWatts calculator for your address.
Data visualization
Mobile Home Solar Cost Before Incentives (2026). A 3 kW system costs $7,800–$10,500 at $2.60–$3.50 per watt. Source: EnergySage marketplace and Lawrence Berkeley National Laboratory pricing data.
Chart summary: Cost scales almost linearly with system size. A 3 kW system, the usual choice for a single-wide, costs $7,800–$10,500, while a 6 kW system for a double-wide with central air costs roughly double that. The spread between the low and high bars comes from price per watt, so comparing quotes in dollars per watt matters more than comparing totals.
Is There a Federal Tax Credit for Mobile Home Solar in 2026?
Not for homeowner-purchased systems placed in service after December 31, 2025. The One Big Beautiful Bill Act, signed July 4, 2025, ended the Residential Clean Energy Credit (Section 25D) earlier than the 2032 date the Inflation Reduction Act had set. Three details still matter:
Installed by December 31, 2025: you claim the 30% credit on your 2025 return (IRS Form 5695), and any unused amount carries forward. See the IRS Residential Clean Energy Credit page.
Leases and power purchase agreements: third-party owners may still use the commercial Section 48E credit, but for solar it now has tight construction and placed-in-service deadlines, so ask any provider how its pricing is built.
State credits: New York offers 25% up to $5,000 and Arizona offers 25% up to $1,000. The DSIRE database lists current state and utility incentives.
Mobile Home Solar Installation Costs: What’s Different From a Standard Roof
Installing solar on a manufactured or mobile home can add line items that a standard site-built house does not. Ask for these to be itemized in every quote so nothing appears later as a change order.
Roof load capacity. Many manufactured home roofs are lightly framed and were not designed to carry panel weight, so installers often require a structural review before mounting. Skipping it creates safety and warranty risk.
Roof material. Mobile homes commonly have metal, rubber membrane (TPO or EPDM) or shingle roofs. Each needs different mounting hardware, and specialty mounts can raise the installed cost per watt.
Electrical panel and wiring. Older homes, especially those built before the 1976 HUD Code, may have undersized electrical panels or aluminum branch wiring. A panel upgrade or electrical inspection is usually quoted separately. For more on this topic, see our guide to Solar Panel Cost for a Split-Level Home.
Park and lot rules. If your home sits in a mobile home park or leased lot, read your lease before requesting quotes. Many parks restrict roof modifications or require written approval. A ground-mounted array is the usual alternative when the roof is not an option, though it needs space and its own permits. Homeowners in Florida and Texas, two states with large manufactured home populations, should check county rules early.
Permits. Most jurisdictions require building and electrical permits, and your installer should pull them. Unpermitted systems can cause problems with insurance, utility interconnection and resale.
How Long Until Solar Panels Pay Off on a Mobile Home?
Without a federal credit, a 3 kW mobile home system costing about $9,000 pays for itself in roughly 13 years at the 2026 U.S. average residential rate of about 18¢ per kWh, according to the EIA’s Short-Term Energy Outlook. The system produces about 3,900 kWh in its first year, which saves roughly $700 at that rate. Payback depends on three numbers: your electricity rate, your sun hours, and how much of the output you use or are credited for.
Data visualization
Payback by Electricity Rate (3 kW, $9,000). Simple payback is about 12.8 years at 18¢/kWh with 0% rate escalation and no incentives. Source: EIA 2026 residential price outlook; 1,300 kWh/kW/yr assumption.
Chart summary: Electricity price is the biggest lever. The same $9,000 system takes about 19 years to pay back at 12¢ per kWh but about 10 years at 24¢ and under 8 years at 30¢. Owners in high-rate states or on rates that keep rising see the fastest returns, while low-rate states are the hardest case without incentives.
Data visualization
25-Year Cumulative Cash Flow (3 kW, $9,000). Savings reach about $7,500 net by Year 25 at 18¢/kWh with 0% rate escalation, 0.5% yearly degradation and no federal credit. Source: NREL degradation median; EIA 2026 rate.
Chart summary: In the base case, cumulative savings cross zero in year 14 (about 13.2 years once degradation is counted) and reach roughly $16,500 in bill savings by year 25, a net gain of about $7,500 after the $9,000 cost. A string inverter replacement during that period would reduce the gain, while utility rate increases or a state tax credit would raise it.
The 0.5% yearly degradation figure matches NREL’s median for crystalline silicon modules, leaving about 88% of Year 1 output at Year 25.
Net metering matters. If your utility credits exported power at the full retail rate, payback is shorter than if it pays a lower export rate. California is a well-known example where newer rules pay less for exported power than the retail price. Check your utility’s current rules in the DSIRE database. Households home during the day use more solar directly and depend less on export credits.
Off-Grid vs. Grid-Tied Solar for a Mobile Home: Which Costs Less?
Grid-tied solar costs less upfront because it needs no battery bank. Off-grid solar can make sense when utility service is unavailable or very expensive to extend.
Grid-tied system (3 kW): about $7,800–$10,500 before incentives. It needs a utility connection and works best with favorable net metering. It shuts down during a grid outage unless you add batteries.
Off-grid system: needs a battery bank, an off-grid inverter, a charge controller and often a backup generator for long cloudy stretches. The battery bank is usually the largest added cost, so get written quotes for your load. Lithium iron phosphate (LFP) batteries are typically rated for 80% or more usable capacity, versus about 50% for lead-acid.
Hybrid system: grid-tied with battery backup. It adds outage protection on top of bill savings and costs more than grid-tied alone. It suits areas with frequent storm outages, such as parts of Louisiana and North Carolina.
For owners who want a DIY path, pre-built solar kits from Shop Solar Kits† bundle panels, an inverter, a charge controller and wiring, and you can use code WAYSENG101 at checkout for a discount. Compare a kit’s price per watt against installed quotes, and remember that kit prices exclude installation labor, permits and inspection, and that a self-installed system may not meet your utility’s interconnection requirements.
Which is cheaper? Grid-tied wins on upfront cost. Off-grid can make financial sense mainly where grid access is unavailable or costly to extend.
💰 System Cost
How to Get the Best Solar Price for a Manufactured Home
Quotes for the same system can differ noticeably between installers, so how you shop matters as much as what you buy.
Get at least three quotes. Make sure each states the same system size in kW and panel wattage so you compare like with like. Marketplaces such as EnergySage let you compare several installers side by side.
Benchmark on price per watt. A fair all-in price in 2026 is roughly $2.60–$3.50 per watt before incentives. A quote well above that range deserves a competing bid or a line-item explanation, especially if it includes roof reinforcement or an electrical upgrade.
Stack state and utility incentives.New York offers a 25% credit up to $5,000, and Arizona offers 25% up to $1,000. Some utilities also offer rebates, so check the DSIRE database by ZIP code.
Confirm manufactured-home experience. Ask how many mobile or manufactured home systems the installer has completed in the past year, and whether they handle HUD-code roof structures and older electrical panels.
Be cautious with long leases if you may relocate. A lease or power purchase agreement tied to your home can complicate a sale or move. A loan or cash purchase keeps the asset yours, though it no longer brings a federal credit. Compare total 25-year cost, not just the monthly payment.
Use our solar savings calculator to check that a quoted system size fits your usage and that the payback an installer promises is realistic.
Sources and Methodology
Cost and savings figures in this guide are estimates, not quotes. Cost uses $2.60–$3.50 per watt, drawn from EnergySage marketplace pricing (early 2026) and Lawrence Berkeley National Laboratory’s Tracking the Sun cash-price median (2024). Savings use 1,300 kWh per kW per year, 0.5% annual panel degradation and an 18¢ per kWh rate, in line with the EIA’s 2026 residential price forecast. Usage data comes from the EIA Residential Energy Consumption Survey 2020. Federal credit status reflects the One Big Beautiful Bill Act (Public Law 119-21). Verify your own numbers with PVWatts and a licensed local installer. This guide is general information, not tax advice.
Related calculators
Free tools for US homeowners — instant results, all 50 states.
Direct answers for US homeowners — sized for a 1,200 sq ft home.
A typical 3 kW mobile home system costs about $7,800–$10,500 in 2026 before incentives, based on $2.60–$3.50 per watt. Smaller 2 kW systems start near $5,200, while 6 kW systems for larger homes with heavy air-conditioning use run about $15,600–$21,000. Your final price depends on roof type, electrical upgrades, permits and your installer.
No federal credit applies to homeowner-purchased systems placed in service after December 31, 2025. The One Big Beautiful Bill Act ended the 30% Residential Clean Energy Credit (Section 25D) early. Systems finished by that date can still be claimed on a 2025 return, and some states, including New York and Arizona, still offer their own credits.
Sometimes, but not always. Many manufactured home roofs are lightly framed and were not designed for extra panel weight, so installers often require a structural review before mounting. Metal, rubber and shingle roofs each need different hardware. If the roof cannot carry the load, a ground-mounted array is the usual alternative, subject to local permits and park rules.
For a 3 kW system costing about $9,000, simple payback is roughly 13 years at the 2026 U.S. average of about 18¢ per kWh. At 12¢ it stretches to about 19 years, and at 24¢ it shortens to about 10 years. Rising utility rates, state incentives and higher self-consumption can shorten payback; inverter replacement can lengthen it.
Usually not if you expect to move within about 10 years, because payback typically takes longer than that without a federal credit. Rooftop panels also may not transfer with a relocated home, and many parks restrict roof changes. A portable or ground-mounted kit, or a plan to stay long term, makes the economics more realistic.
Same usage, bill-based guide
Your Mobile Home target maps to roughly a $75/month electric bill nationally.
18.19¢/kWh — US average residential price. Source: EIA Electric Power Monthly, Table 5.6.B (year-to-date through July 2026), residential average retail price (July 2026) (EIA)
Solar production
4.5 peak sun hours/day × 0.82 system derate. Approximate state-average daily solar resource (peak sun hours) based on NREL solar resource data (NSRDB); not location-specific — use NREL PVWatts for an address-level estimate. (NREL PVWatts)
Installed price
$3.00 per watt before incentives. Blended 2026 US residential installed price used by this site; EnergySage marketplace reported about $2.60/W (mid-2026); full-market medians are higher.
Federal tax credit
$0 for homeowner-owned systems installed in 2026 — the 30% §25D credit ended Dec 31, 2025 (IRS)
Net metering
National blend — solar assumed to offset 75% of the bill (87% in full-retail net-metering states, 55–70% elsewhere).
Square footage
Used only as a rough usage proxy: 1,200 sq ft × 0.4495 kWh/sq ft/month. EIA: average US residential customer used about 899 kWh/month (2022). Site assumption: that usage corresponds to a ~2,000 sq ft home (0.45 kWh per sq ft per month). Square footage is only a rough proxy — size from your actual kWh.
Estimates only — not tax, legal or financial advice. Get at least three installer quotes and confirm incentives with your utility and a tax professional.