US residential solar · 2026 data

Solar Cost for a 1,100 sq ft Home

Q: "How much do solar panels save per month on a 1,100 sq ft home?"

"A 5 kW system on a 1,100 sq ft home typically offsets 80–100% of electricity use in a moderately sunny climate, saving $80–$180 per month depending on local rates. Homeowners in high-rate states like California, Massachusetts, or Hawaii often see monthly savings above $150 once net metering credits fully apply in the first full year of operation."

Q: "Are solar panels worth it if I plan to move within 5 years?"

"Possibly, but the timeline is tight. At a 7-year payback period you would exit before breaking even — however, studies by Lawrence Berkeley National Laboratory show solar adds $4–$6 per installed watt to resale value, meaning a 5 kW system typically increases home sale price by $20,000–$30,000. That offsets most or all of the net cost if the buyer values an unencumbered owned system over a leased one."

Q: "Which is cheaper over time — a solar lease or a solar loan?"

"A solar loan almost always wins over a lease on a 25-year horizon. With a loan you keep 100% of the ITC value and own the system outright after the loan term. Leases transfer the ITC to the installer, lock you into escalating payments, and can complicate home sales. A lease makes sense only if your federal tax liability is too low to use the ITC in any year."

Q: "How long until solar panels pay for themselves on a 1,100 sq ft home?"

"On a 5 kW system after the 30% ITC, most 1,100 sq ft homeowners reach payback in 7–10 years in average-sun, average-rate states. High-rate states (over $0.18/kWh) can reach break-even in 6–7 years. Low-rate states may take 11–14 years. After payback, the remaining system life of 25-plus years produces electricity at effectively zero marginal cost."

Q: "Does solar work well if my roof doesn't face south?"

"East- or west-facing installations produce 15–20% less annual output than a true south-facing roof, extending payback by roughly 1–2 years but rarely making solar uneconomical in high-rate states. A west-facing array can actually be advantageous under time-of-use (TOU) utility rates, since it generates peak power in late afternoon when TOU rates are highest — sometimes matching or exceeding the value of a south-facing array under flat-rate pricing. Before contacting any installer, use our [solar ROI calculator](/calculators/solar-roi/) to calculate your exact figures — including 25-year net benefit, break-even year, and the impact of your specific state's incentive stack. *Data sources: SEIA U.S. Solar Market Insight 2025; NREL U.S. Solar Photovoltaic System and Energy Storage Cost Benchmarks 2025; EIA Electric Power Monthly April 2026; IRS Form 5695 Instructions (2025 tax year); DSIRE Database, NC State University, accessed May 2026; Lawrence Berkeley National Laboratory Tracking the Sun 2024.*"

SAVE

$0+

Over 25 Years

$8,800 Cost after ITC

11.0 yrs Payback

4.2 kW System size

Most homeowners need:

9–14 panels
4.2 kW system
$8,800 after tax credits
11.0 year payback

✓ Updated monthly ✓ NREL data ✓ Reviewed by solar experts ✓ IRS tax credit included

Updated June 9, 2026 · 7 min read ·By Mark Sullivan ·Reviewed by Green Energy Calculators Editorial Team

Calculate My System Size View State Data

Without solar vs with solar

25-year cost comparison for a $300/month US electric bill.

Without solar

25-year utility cost

$33,700

Rates rise ~3% per year (EIA avg.)

With solar

Net system cost

$8,800

After 30% federal ITC

Your savings

Difference

+$24,800

Estimated lifetime advantage

Author Mark Sullivan

Reviewed by Green Energy Calculators Editorial Team

Last updated Jun 9, 2026

Sizing formula kW = Annual kWh ÷ (Peak Sun Hours × 365 × 0.82)

Installing solar on a 1,100 sq ft home typically costs $10,500–$21,000 before incentives — or $7,400–$14,800 after the 30% federal Investment Tax Credit (ITC). That wide range exists because three variables move the number more than anything else: how much electricity your home actually uses, the peak sun hours at your location, and the price-per-watt your installer charges. Get those three right and the rest of the calculation becomes straightforward.

A 1,100 sq ft home is smaller than the US median (~2,300 sq ft), which works in your favor. Lower square footage usually means lower electricity consumption, a smaller system, and a faster payback period — often 7–10 years in high-sun states. Here is what you need to know before you request a single quote.

How Much Does a Solar System Cost for a 1,100 sq ft Home?

For most 1,100 sq ft homes, a 4 kW to 6 kW system covers the electricity load. According to SEIA’s 2025 U.S. Solar Market Insight report, the average residential solar installation price sits at roughly $3.00–$3.50 per watt installed nationwide in 2026. That puts a 5 kW system — a reasonable midpoint for this home size — at $15,000–$17,500 gross, dropping to $10,500–$12,250 after the 30% ITC.

Keep in mind the ITC applies only if you owe federal income tax. The credit reduces your tax bill dollar-for-dollar; it is not a refund check. If your tax liability is smaller than the credit in the first year, you can carry the remainder forward to future tax years under current IRS rules.

Panel brand, inverter type (string vs. microinverter), and roof complexity all shift that per-watt price. A straightforward south-facing roof with no shading sits at the low end; a complex multi-pitch roof with shading obstacles pushes toward $3.80–$4.00/watt before incentives. Microinverters add $800–$1,500 to a 5 kW install but improve output in partial-shade conditions by up to 25%.

Use our solar system size calculator to find the exact kilowatt capacity your home needs before comparing quotes — knowing your target size prevents installers from oversizing (and overcharging).

Horizontal bar chart showing 5 kW solar system cost breakdown across five categories — **5 kW Solar Cost Breakdown for a 1,100 sq ft Home.** Panels and labor together account for roughly 70% of a typical $15,000 gross installation. Source: SEIA 2026.

Solar vs utility company · 25-year comparison

Total cost of staying on the grid vs owning solar for a $300/month bill (national average assumptions).

Total utility payments

$33,700

Total solar cost (after ITC)

$8,800

Net savings

+$24,800

Avg. monthly difference

+$67/mo

See my savings →

Solar Panel Cost by System Size in 2026

Not every 1,100 sq ft home has the same energy appetite. A house with an electric stove, EV charger, and older appliances can draw twice the kWh of an energy-efficient neighbor of the same size. The table below shows installed cost ranges by system size — after the 30% ITC — so you can find the tier that matches your actual electricity bill.

Residential Solar Cost by System Size — After 30% ITC (2026)

System Size	Gross Cost	After 30% ITC	Avg Annual Output	Best For
3 kW	$9,000–$10,500	$6,300–$7,350	3,600–4,500 kWh	Low-use homes, ~500 kWh/mo bill
4 kW	$12,000–$14,000	$8,400–$9,800	4,800–6,000 kWh	Typical 1,100 sq ft usage
5 kW	$15,000–$17,500	$10,500–$12,250	6,000–7,500 kWh	Higher use or partial EV charging
6 kW	$18,000–$21,000	$12,600–$14,700	7,200–9,000 kWh	Max offset, battery-ready

Output estimates assume 4.5–5 peak sun hours per day, which covers most of the US Sun Belt. If you live in Washington or Oregon, expect 20–25% lower annual output on the same hardware; if you are in Arizona or Nevada, output can run 15% higher due to greater solar irradiance.

Per-watt costs have fallen roughly 3% year-over-year according to NREL’s 2025 U.S. Solar Photovoltaic System and Energy Storage Cost Benchmarks, meaning waiting an extra year saves perhaps $400–$600 on a 5 kW install — but you also lose 12 months of electricity savings and risk missing the full 30% ITC window. In most cases, installing sooner wins financially over delaying.

Solar Panel Cost After the Federal Tax Credit and State Incentives

The 30% ITC runs through 2032 under the Inflation Reduction Act, then steps down to 26% in 2033 and 22% in 2034. Claim it on IRS Form 5695 in the tax year your system is activated — not when you sign the contract. On a $15,000 system, that is a $4,500 reduction in your federal tax bill, with no income cap required. For more on this topic, see our guide to Solar Panel Cost for a 5,000 sq ft Home in 2026.

State incentives layer on top and vary dramatically. New York offers a 25% state tax credit up to $5,000, plus NY-Sun rebates averaging $0.20/watt — one of the most generous stacks in the country. Massachusetts runs the SMART program, which pays a per-kWh export tariff on top of a 15% state income tax credit capped at $1,000. California homeowners with paired battery storage may qualify for the Self-Generation Incentive Program (SGIP). In Texas, there is no state income tax credit, but many utilities offer rebates of $2,500–$3,500 directly off the install price.

A commonly asked question is whether solar is worth pursuing without net metering. The short answer is yes, but the math changes: without retail-rate net metering credits, you need to size the system conservatively to maximize self-consumption rather than export, which often means a 3–4 kW system rather than 5–6 kW for a 1,100 sq ft home.

Use the DSIRE database at dsire.org — maintained by NC State University under a DOE grant — to pull the exact incentive stack for your utility and ZIP code. A full incentive search takes under five minutes and commonly reveals programs that reduce net cost by another 10–20% beyond the federal ITC.

Our solar tax credit calculator shows your exact ITC value based on system cost and estimated tax liability, including carry-forward scenarios.

How Long Does Solar Payback Take for a 1,100 sq ft Home?

Payback period — the point where cumulative savings equal what you paid — ranges from 6 to 12 years for a typical 1,100 sq ft installation, according to NREL’s residential solar benchmarks. The single biggest variable is your local electricity rate, not your sun exposure.

A homeowner in Louisiana paying $0.095/kWh gets far less annual savings from the same system than someone in Connecticut paying $0.26/kWh. A 5 kW system generating 7,000 kWh/year saves $665/year in Louisiana but $1,820/year in Connecticut — a payback difference of roughly four years on an identical install.

Line chart showing 25-year solar cumulative cash flow for high and low electricity rate states — **25-Year Solar Payback: High vs. Low Electricity Rate States.** A 5 kW system in a $0.22/kWh state breaks even around year 7; a $0.11/kWh state takes ~14 years. Source: NREL 2026.

Three additional factors that shorten or lengthen payback are worth knowing. Full retail-rate net metering — still available in most states — can cut payback by 1–2 years versus avoided-cost-only buyback rates. Panel degradation runs at roughly 0.5% per year for tier-1 modules per NREL testing, meaning year-25 output is approximately 88% of year-1 output. And the EIA projects average retail electricity rates to rise ~2.5% annually through 2030, which improves solar ROI each year the system runs.

To run your specific numbers, try our solar payback calculator, which accounts for your local rate, net metering policy, and panel degradation curve.

How to Get the Best Solar Price for a Small Home

The single most effective move for a 1,100 sq ft homeowner is collecting at least three competing quotes. NREL research shows that homeowners who compare three or more quotes pay 10–15% less per watt than those who accept the first offer. On a $15,000 system, that gap is $1,500–$2,250 in savings before a single incentive is applied.

Timing and financing structure also move the price. Installers in northern states often discount October–February installs by $0.15–$0.25/watt due to lower seasonal demand. On financing, solar loan products typically carry 5.99–8.99% APR in 2026 and include a dealer fee of 2–4% that inflates the effective system price by $600–$1,200 on a 5 kW install — a cost that is rarely disclosed upfront. Paying cash or using a low-rate HELOC avoids that markup entirely.

Group purchasing programs in states like Virginia, Maryland, and Colorado can deliver additional savings of $0.10–$0.30/watt through bulk negotiation. These solar co-ops are organized by local nonprofits and governments and are free to join.

When reviewing quotes, always compare cost per watt after incentives, not monthly payment. A 20-year loan at 7.99% APR can make a $19,000 system appear cheaper per month than a cash purchase of a correctly-sized $13,000 system — but total interest paid over two decades erases the advantage. Verify that all quotes assume the same system size in kW before comparing dollar figures.

Use our solar savings calculator to model the full 25-year financial picture for any quote you receive, including loan vs. cash vs. lease comparisons, so you walk into every conversation knowing your exact numbers.

Frequently asked questions

Direct answers for US homeowners — sized for a 1,100 sq ft home.

How much do solar panels save per month on a 1,100 sq ft home?

A 5 kW system on a 1,100 sq ft home typically offsets 80–100% of electricity use in a moderately sunny climate, saving $80–$180 per month depending on local rates. Homeowners in high-rate states like California, Massachusetts, or Hawaii often see monthly savings above $150 once net metering credits fully apply in the first full year of operation.

Are solar panels worth it if I plan to move within 5 years?

Which is cheaper over time — a solar lease or a solar loan?

How long until solar panels pay for themselves on a 1,100 sq ft home?

Does solar work well if my roof doesn't face south?

Same usage, bill-based guide

Your 1,100 sq ft Home target maps to roughly a $75/month electric bill nationally.

$75 $75/month electric bill guide Panels · cost · payback · by state →

Popular utility companies

Solar rules and net metering vary by utility — not just by state.

PG&E California Duke Energy NC · FL · Midwest Florida Power & Light Florida Oncor Texas APS Arizona Georgia Power Georgia

Methodology & data sources

Calculation method: System size uses NREL PVWatts derate factor (0.82). Costs based on SEIA 2026 installed cost ($2.75–$3.20/W). Payback uses net cost after 30% federal ITC (IRC Section 25D). Savings assume full-retail net metering unless noted.

Official sources: EIA state electricity rates · NREL PVWatts · Energy.gov ITC guide · DSIRE incentives · SEIA market data · IRS Publication 5695.

All figures are estimates for educational purposes — not tax, legal, or investment advice. Consult a licensed installer and CPA for your situation.