Solar Panel Cost Calculator (2026)

Estimate the cost of a residential solar PV system. Pick system size in kW, panel tier, inverter, and optional battery storage. 2026 data; not a contractor bid.

By Martin Lashgari, Ph.D., P.E., PMP · Last reviewed September 2026

Residential solar PV array installed on an asphalt-shingle roof with microinverters under each panel, plus a wall-mounted inverter and battery in the garage

Enter your solar project

Pro installed DIY (off-grid only)

Includes equipment, install labor, permits, and contractor markup. The federal Section 25D residential clean energy credit applied for property placed in service on or before December 31, 2025. Projects placed in service in 2026 generally do not qualify under current IRS guidance — verify on IRS Form 5695 and the IRS Residential Clean Energy Credit page before relying on it.

Common projects

System size

System size (kW DC)

Avg US home 7-9 kW. Sun-rich zones (AZ/CA/TX) need less; cloudy (WA/NY) need more.

State

ZIP / planning zone (optional)

Uses the first 3 digits as a planning zone (not exact local pricing). Overrides state average when matched.

Panel tier

Standard: mono-PERC panels of about 400-440 W. Premium: high-efficiency panels.

Inverter

Microinverters cost more but maximize per-panel production with shading.

Battery storage (kWh)

0 = grid-tie only. 13 kWh ~ 1 Tesla Powerwall. Off-grid typically 20+ kWh.

Site & permit

Roof reinforcement

200A panel upgrade

Critter guard

Permit

Permit allowance only. Standard: building, electrical and utility permits. Major: a larger allowance where HOA approval, a structural plan review or a utility study is needed. Roof reinforcement work is the separate Roof reinforcement choice.

Your solar estimate

Estimated installed range

Calculating…

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Equipment

Labor

Per kW

Cost breakdown

Solar Panels cost breakdown: quantity and estimated range for each line item
Item	Quantity	Estimated range

Planning estimate, not a bid. 2026 rates on this page cite U.S. Department of Energy (6 rows), SolarReviews (3), EnergySage (2), BLS wage data (1) and HomeGuide (1). 5 rate rows are internal estimates with no public source yet. Compare written bids on an identical scope for accurate local pricing.

What's not included: SREC income (PJM states), state-specific rebates (NY-Sun, Mass SMART, TECH Clean CA), net metering valuation, time-of-use rate impact, EV charger install, ground-mount or pole-mount systems, generator interlock, tree trimming.

Bid check

Got a solar installer quote? Compare it to the planning range.

Quote ($)

Quote includes

Not sure and Whole estimate compare with the whole estimate. Materials + equipment uses those lines alone, without labor lines or markup; items priced as installed work are left out and the result names them.

Quote per kW

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Range check

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Scope risk

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Add a quote amount to compare it against the current estimate.

Methodology & sources

What this is: a planning-range residential solar calculator. Its rates cite U.S. Department of Energy, SolarReviews, EnergySage, BLS wage data and HomeGuide, and 5 rows are internal estimates. The note under the estimate counts the rows from each source.

Equipment is per-watt for panels/inverters/racking/BOS. Battery storage per Wh. At the default 8 kW job the installed price works out to $2,130-$3,720 per kW.

Labor is priced from per-unit installed rates, not by the hour. For reference, the rate file also lists a loaded crew rate ($82-$140 per crew-hour) built on BLS OEWS 47-2231 (Solar PV Installers).

Federal Section 25D credit: expired December 31, 2025 — systems placed in service in 2026 generally do not qualify. Details on IRS Residential Clean Energy Credit page before relying on it.

Last updated: November 2026. Full methodology →

Helpful materials & tools for this project

Home solar is a permitted, pro-installed system, but a few add-ons are homeowner-bought:

Home battery — Stores solar for outages and evening use.
Energy monitor — Tracks production and consumption in real time.
Panel cleaning kit — Keeps output up in dusty or pollen-heavy areas.

Suggested materials to help you plan — not an endorsement, and never a contractor referral.

Cost simulator

Monte Carlo simulation

See the full range of likely costs — with the odds

For a typical 6 kW off-grid (cabin), the installed planning band runs $29,283 to $51,329 nationally before regional adjustment.

What this project costs in different metros

Regional labor and material markets move the installed price. These bands come from the same engine as the calculator above, run at each metro's planning multipliers — enter your ZIP in the calculator for a figure tuned to your area. National reference: $29,300–$51,350.

Solar Panels typical installed cost by metro area, compared with the national reference
Metro	Typical installed range	vs. national
San Francisco, CA	$34,200–$60,000	+17%
New York, NY	$34,550–$60,600	+18%
Boston, MA	$32,050–$56,200	+10%
Chicago, IL	$32,500–$56,950	+11%
Atlanta, GA	$32,800–$57,450	+12%
Houston, TX	$30,700–$53,850	+5%
Miami, FL	$28,950–$50,700	-1%
Phoenix, AZ	$30,000–$52,600	+2%

Planning ranges, not contractor quotes. Multipliers are rounded regional planning indices (see methodology), not a reproduction of any proprietary cost table.

What moves this price the most

Vary one input across its full range while holding everything else at the typical scenario, and this is how far each choice can move the installed estimate — measured by running the calculator's own engine. The widest bars are where your decisions matter most; the figures show the cheapest-to-priciest span each input creates on its own.

Battery storage (kWh)$16,850–$83,000
System size (kW DC)$29,150–$91,900
200A panel upgrade$40,300–$43,650
Roof reinforcement$40,300–$42,700
Panel tier$40,300–$42,600

A tornado view: each row varies a single input; a real project moves several at once, so totals aren't additive.

How much does residential solar cost in 2026?

On this calculator a typical 8 kW system with standard panels and microinverters runs $2,130 to $3,720 per kW installed in 2026; the cost per kW falls as the system grows, because permits, interconnection and setup do not. The federal Section 25D credit applied to systems placed in service on or before December 31, 2025; 2026 installs generally do not qualify under current IRS guidance — verify on IRS Form 5695.

System size	Gross installed	Production (avg)
5 kW	$11,600-$20,300	~6,000-8,000 kWh/yr
8 kW (avg US home)	$17,000-$29,800	~9,600-12,800 kWh/yr
10 kW	$20,600-$36,000	~12,000-16,000 kWh/yr
15 kW (EV / electric heat)	$29,400-$51,500	~18,000-24,000 kWh/yr
10 kW + 13 kWh battery	$31,100-$54,500	backup-ready

Each row is the calculator’s default equipment at that size: standard panels, microinverters, a critter guard and a standard permit, at national average pricing. Premium panels, roof reinforcement or a main-panel upgrade add to these; the all-electric 15 kW preset includes all three.

Frequently asked questions

How much do solar panels cost in 2026?

On this calculator, with standard panels and microinverters, a 5 kW system runs $11,600-$20,300 installed and an 8 kW system, about the size an average US home needs, runs $17,000-$29,800, or $2,130-$3,720 per kW. The federal Section 25D residential clean energy credit applied for property placed in service on or before December 31, 2025. Projects placed in service in 2026 generally do not qualify under current IRS guidance — verify on IRS Form 5695 and the IRS Residential Clean Energy Credit page before relying on it.

What's the federal solar tax credit?

The federal Section 25D residential clean energy credit applied for property placed in service on or before December 31, 2025. Projects placed in service in 2026 generally do not qualify under current IRS guidance — verify on IRS Form 5695 and the IRS Residential Clean Energy Credit page before relying on it. The percentage and expiration changed under recent legislation (Inflation Reduction Act, then the 2025 OBBB). Verify the current rate and your eligibility on IRS Form 5695 before factoring it into project planning.

What size solar system do I need?

Take your annual kWh usage (from utility bills) and divide by 1,200-1,500 (depends on your sun-hours zone). A typical US home uses ~10,800 kWh/yr and needs 7-9 kW. Sun-rich zones (AZ, CA, TX) get more production per kW than cloudy zones (WA, NY).

Is battery storage worth it?

Battery is the right call if (a) you have time-of-use rates (CA NEM 3.0), (b) you want backup power, or (c) net metering pays poorly. Battery is ~30-50% of the system cost; the federal Section 25D residential clean energy credit applied for property placed in service on or before December 31, 2025. Projects placed in service in 2026 generally do not qualify under current IRS guidance — verify on IRS Form 5695 and the IRS Residential Clean Energy Credit page before relying on it.

How long do solar panels last?

Panels are warrantied 25-30 years (typically retain 80-87% production at year 25). Inverters: string 10-15 yr, microinverters 25 yr. Batteries 10-15 yr.

Can I install solar myself?

Off-grid systems on cabins, RVs, sheds — yes. Grid-tie systems require licensed electrician + utility approval + permitting; DIY voids most warranties, rebates, and tax credits.

Why does the calculator show a price range?

Brand tier, roof complexity (multi-plane, steep), electrical service condition, battery, and regional installer competition all move the total. The calculator adds up the low and high ends separately, from each line item’s low and high rate, so the range carries that spread instead of a single guess.

Common mistakes & questions

Oversizing for net metering — utilities cap how much you can install; check NEM rules first.
Skip the roof inspection — never put panels on a roof with less than 10 yr of life left.
Wrong inverter for shading — string inverters underperform on shaded roofs; microinverters or DC optimizers are required.
Underestimate the panel-upgrade trigger — adding solar+battery often forces 200A service.
Skip the production estimate — get a real PVWatts production number, not just kW capacity.
Lease vs buy — with a lease, the leasing company (not you) claims any federal credit. The Section 25D credit applied to systems placed in service on or before December 31, 2025; 2026 installs generally do not qualify under current IRS guidance — verify on IRS Form 5695.
Ask your installer: production guarantee, monitoring access, panel + inverter warranties, NABCEP certification, escalator-clause language.

When this estimate is wrong

Roof complexity (multi-plane, steep, tile) adds 10-25%.
Trip charge minimums on small systems (<5 kW) push $/W higher.
Rapid-shutdown equipment (NEC 690.12) is required wherever the 2014 or later NEC is in force, and fire setbacks or a structural review can add permit steps; this estimate prices a standard residential permit.
HOA review can add weeks to schedule.
Seasonality — winter/early spring quotes are 5-15% lower than peak summer.
Supplier minimums on small orders.
Permit + utility interconnect timeline — 6-12 weeks typical.