Commercial Solar Cost: What You Will Pay in 2026
Written by HyreSolar Research Desk Price compilation from published, dated sources
The short answer
Commercial Solar Cost depends mainly on system size, equipment and roof, and this page gives the installed range from dated, sourced quotes. Across 16 published, dated sources retrieved October 22, 2026, commercial systems run $1.53/W–$2.35/W installed, before incentives.
Commercial solar is priced per watt because systems vary from tens of kilowatts to megawatts. A 100 kW system at $2.00/W would be $200,000 (worked arithmetic, not a price).
The homeowner credit, Section 25D, has ended; a business-owned system falls under Section 48E instead, with its own construction and placed-in-service deadlines, so confirm eligibility with a tax adviser before relying on it.
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Keep learningInstalled price range (16 quotes, dated)
Commercial solar, installed price per watt: $1.53/W–$2.35/W, the median low to the median high across the 16 comparable published figures below. The full spread runs from $1.00/W to $3.60/W.
| Source | Published figure | Basis | Source date | Retrieved |
|---|---|---|---|---|
| GreenLancer | $1.77/W | SEIA/Wood Mackenzie Q2 2026 national average, $/Wdc | Sep 24 (year not shown; cites Q3 2026 report) | 2026-10-22 |
| Paradise Solar Energy | $1.00/W to $2.50/W | installed, most commercial installations | 2026-08-04 | 2026-10-22 |
| SunHub | $1.40/W to $2.20/W | commercial and industrial installed | 2026-06-04 | 2026-10-22 |
| Keen Energy | $2.20/W to $3.20/W | installed, before incentives, Southern California | 2026-04-15 | 2026-10-22 |
| Solarports | $2.40/W to $3.60/W | systems over 100 kW, market baseline | 2026-06-02 | 2026-10-22 |
| Pretapower | $1.80/W to $2.60/W | commercial average (market not stated) | 2026-07-01 | 2026-10-22 |
| Cenet Capital | $1.77/W | installed benchmark 2026 | 2026-10-06 | 2026-10-22 |
| Joinsun | $2.50/W to $3.50/W | before incentives (page FAQ also gives $1.40-$1.80) | 2026-02-25 | 2026-10-22 |
| mgrid | $1.77/W | SEIA/Wood Mackenzie Q2 2026, reported | 2026-09-25 | 2026-10-22 |
| SurgePV | $1.44/W to $1.72/W | commercial average | 2026-07-19 | 2026-10-22 |
| Ameco Solar | $1.46/W | average | not stated | 2026-10-22 |
| Current Energy | $1.40/W to $2.00/W | California, 50-500 kW, before incentives (10-50 kW: $1.80-$3.50) | 2026-08-21 | 2026-10-22 |
| SolarReviews | $1.46/W | average commercial installation | not stated (shows 'Updated 1 year ago') | 2026-10-22 |
| Portlandia Electric Supply | $1.60/W to $2.80/W | US commercial installed, 2025 | 2025-07-28 | 2026-10-22 |
| SolarTech Online | $1.30/W to $2.50/W | installed | 2026-04-26 | 2026-10-22 |
| NuWatt Energy | $1.10/W to $2.55/W | installed, before incentives | 2026 (title) | 2026-10-22 |
Each row is a figure as the source states it, gross of incentives, not adjusted by us. The headline range is a HyreSolar calculation over these rows. No 30% federal credit is subtracted: Section 25D ended for expenditures after December 31, 2025.
Compare quotes from vetted solar installers Proposal analyzer
What moves the price of commercial solar
System size moves the per-watt price most. Engineering, permitting, interconnection studies and mobilisation are close to fixed, so a 30 kW rooftop on a small office prices well above a 500 kW warehouse roof per watt.
The sources we read agree on the direction even where they disagree on the figures, and the low end of the range describes large systems.
Hardware is a smaller share than it used to be. Module prices fell through 2025 and 2026, yet the SEIA and Wood Mackenzie benchmark for commercial systems rose year over year in Q2 2026, as mgrid reported, because freight and Section 232 tariffs on steel, aluminum and copper raised racking and wiring costs.
Expect balance-of-system and labor to drive the differences between bids.
Site and utility conditions finish it. A ballasted flat roof, a carport structure or a ground array each price differently; carports carry the heaviest steel.
Interconnection is the wildcard: a utility study that requires transformer or switchgear upgrades can add a line that dwarfs the panels, and prevailing-wage or local labor rules raise costs in some states.
California sources in our set sit at the top of the range for these reasons.
Price by system size and type
The sourced range above spans small business rooftops to large commercial systems.
| If your project is | Expect | Why it differs |
|---|---|---|
| Small rooftop, under about 100 kW | The upper part of the range | Fixed soft costs spread over fewer watts. |
| Mid-size roof, 100 to 500 kW | Near the middle of the range | The size most national benchmarks describe. |
| Large roof or ground array, above 500 kW | The lower part of the range | Economies of scale on design, labor and equipment. |
| Solar carport | Above a rooftop of the same size | Structural steel and foundations. |
| Commercial with storage | A second line, priced per kWh | See battery cost for how storage is quoted. |
How to check a quote
- 1Put every bid on gross dollars per watt DC
Before incentives and depreciation. The proposal analyzer does the division.
- 2Ask what the interconnection study found
Utility-required upgrades can be the largest variable; get them priced or explicitly excluded.
- 3Separate structural work from generation
Roof reinforcement, carport steel and reroofing belong on their own lines.
- 4Get the 48E assumptions in writing
Which construction start date, placed-in-service date and domestic-content or wage requirements the projected credit depends on.
- 5Compare the O&M and production guarantee
Commercial contracts often include monitoring and maintenance terms worth pricing over the system life.
Questions
How much does commercial solar cost per watt?
Why is commercial solar cheaper per watt than residential?
Can a business still claim a federal solar credit?
Does commercial solar need a battery?
HyreSolar does not install or finance solar systems. The figures above are other publishers’ published prices, dated and linked; none is a quote for your property. Prices vary with location, roof, equipment, electrical work and financing.