Quick answer
To compare solar quotes, collect at least three written quotes for a similar system size. Divide each total price by the system size in watts to get cost per watt. Then compare equipment, warranties, exclusions, and finance terms. The overpriced quote is the one far above its peers, vague about equipment, or pushing you to sign today.
Two solar quotes can carry the same price and describe very different systems. This guide shows how to put quotes side by side, what a fair price looks like in the US, UK and Gulf in 2026, and which red flags separate a careful installer from an expensive one.
Key takeaways
- Get at least three itemised, written quotes for the same job. EnergySage suggests comparing two to five.
- Compare cost per watt before incentives, not the total price.
- Check what each quote leaves out: approvals, meter, structural work, cleaning access.
- In the US and UK, ask for the cash price before you look at finance. Loan "dealer fees" can hide a markup.
- In the Gulf, your installer must be registered with the local utility, and heat and dust change how much power you actually get.
What does a complete solar quote include?
A quote with a total price and the words "premium system" can't be compared with anything. A usable one shows:
- System size in kW (DC), number of panels, and the panel brand and model
- Inverter brand, model and type (string, microinverter or hybrid)
- Mounting hardware and any roof or structural work
- Estimated yearly output in kWh, with the software and assumptions behind it
- An itemised price: equipment, labour, permits, grid connection and meter
- Warranty terms in years, and who stands behind each one
- The cash price, plus any loan or lease terms
- A timeline for approval, installation and grid connection
Production estimates deserve a second look. NRG Clean Power notes that reliable installers calculate projections with design software such as Aurora or PVsyst, based on your location and sunlight data. A number with no method behind it is a sales claim.
Step 1: Get at least three quotes for the same job
Give every installer the same inputs: twelve months of electricity bills, roof photos, any shading, and your goal (say, cover most of your bill, with or without a battery). If one installer quotes a battery and another doesn't, ask both to re-quote on the same basis.
EnergySage says it's common, and not wrong, for quotes to propose different system sizes, so ask each installer why they chose their design. A UK buyer's guide adds that figures such as estimated annual generation and the share of solar power you use at home should match across quotes. If they don't, ask which assumption is different and why.
Step 2: Convert every quote to cost per watt
Cost per watt = total installed price ÷ system size in watts (cash price, before incentives). NerdWallet calls it the main number to compare, because installers propose slightly different sizes and financing.
Here is a hypothetical villa example. The figures are illustrative, not real quotes. Currency conversion uses the AED peg of 3.6725 per USD.
| Quote | Size | Price | Left out | Adjusted price | Cost per watt |
|---|---|---|---|---|---|
| A | 8 kW | AED 36,000 ($9,803) | Nothing | AED 36,000 | AED 4.50 ($1.23) |
| B | 10 kW | AED 39,000 ($10,619) | Approvals and meter, about AED 4,000 | AED 43,000 ($11,708) | AED 4.30 ($1.17) |
| C | 8 kW | AED 48,000 ($13,070) | Nothing, but equipment described as "premium" | AED 48,000 | AED 6.00 ($1.63) |
Quote B looks cheapest at AED 3.90 per watt (about $1.06) until you add back the approvals and meter. After adjustment, A and B sit within about 5% of each other. Quote C costs 33% more per watt than A (6.00 ÷ 4.50) for the same size, and it names no equipment. That's the one to question.
Price per watt usually falls as systems get bigger, since most installers charge less per watt for larger systems. Compare similar sizes, as B (10 kW) is not a clean match for A and C.
What overpaying does to payback. Assume, for illustration, that an 8 kW system saves AED 6,000 a year. Simple payback is price ÷ annual savings. Quote A: 36,000 ÷ 6,000 = 6.0 years. Quote C: 48,000 ÷ 6,000 = 8.0 years. Same output, two extra years of waiting, unless C's equipment or warranty is better in ways you can verify. Your own savings depend on your tariff and consumption, so replace the AED 6,000 with a figure from your bill.
What is a fair price per watt in 2026?
There is no single "right" price, but published benchmarks give you a sanity check. All figures below are before incentives and carry their source date.
| Market | Benchmark | Source and date |
|---|---|---|
| United States (USD) | About $2.60 per watt on average; a typical 12 kW system averages $31,135 | EnergySage Marketplace quotes, data updated Oct 2026. EnergySage also cites a Lawrence Berkeley National Laboratory median of $3.50 per watt for cash purchases in 2024, so real-world prices run higher than marketplace averages. |
| United Kingdom (GBP) | About £7,600 for a roughly 4.5 kWp system, or about £1,690 per kWp (7,600 ÷ 4.5) | Energy Saving Trust figure, based on July 2026 fuel prices, as reported by Whito in Sep 2026. Solar installs are 0% VAT until at least March 2027. |
| UAE (AED and USD) | AED 20,000 to 35,000 for a 5 kW villa system, or AED 4 to 7 per watt ($1.09 to $1.91) | 2026 guides from Property Finder and VoltFlow. Guides disagree widely, and one Property Finder article cites typical spend of AED 45,000 to 100,000 without a per-kW breakdown. |
I couldn't find a reliable published per-kW benchmark for Saudi Arabia, Qatar, Kuwait, Oman or Bahrain, so I'm not giving one. In those markets, your three quotes are the benchmark.
As a rule of thumb (mine, not an industry standard), ask for a written explanation from any installer whose price per watt is more than about 20% above the median of your other quotes. Expensive isn't automatically a rip-off. A hard roof, a better inverter or a longer warranty can justify it. But the installer should be able to say which.
US buyers should also know the federal homeowner credit is gone. The 25D credit ended on December 31, 2025 for homeowner-owned systems, so a pitch that subtracts a "30% federal credit" from a 2026 purchase price is wrong. Leases and PPAs are treated differently, which is one more reason to ask for the cash price.
Step 3: Compare the equipment, not the sales talk
Ask for the datasheet of the exact panel and inverter model in each quote. Then check four things:
- Panel model and rated power. "Premium" or "Tier 1" on its own means nothing. You want a manufacturer and a model number.
- Temperature coefficient of power. Hot roofs lose output. A smaller loss per degree is better, and it matters more in the Gulf than in London.
- Inverter type. NerdWallet lists four main types. If your roof has partial shade, ask how each design handles it.
- Mounting and wiring. A UK guide warns that poor installers use the cheapest roof hooks they can find. A quote that skips this detail is hiding a place where corners get cut.
Don't judge a quote by panel price alone. According to EnergySage, panels are only about 12% of the total installed cost. Labour, inverter, permits and overhead make up the rest, and that's where an overpriced quote usually hides.
Step 4: Read the warranties line by line
A solar system carries separate warranties, and SolarQuotes notes there are three that are easy to confuse. In practice you'll see warranties for the panels, the inverter, and the installation work. Write down the years for each and ask:
- Who does the work, and who pays the labour, if a panel or inverter fails?
- Will the company you're paying do the work itself, or hire a subcontractor? SolarQuotes warns that some retailers pass installation to whoever is available that week.
- What happens to the workmanship warranty if the installer closes?
Step 5: Check finance for hidden markups
This step matters most in the US, and it applies wherever installers sell loans. The US Consumer Financial Protection Bureau warns that sellers may add "dealer fees" to a solar loan, so you borrow more than the real system price. A law-firm summary of the CFPB's findings says these fees typically run 10% to 30% of the cash price and aren't included in the APR.
Australia's SolarQuotes makes a similar point about "0% interest" deals: they aren't free, because the cost is built in somewhere. The fix is the same everywhere. Ask for the cash price in writing, then compare it with the financed total. If the financed price is higher for the same equipment, you're paying for the finance in a way the APR doesn't show.
Gulf checks before you trust a quote
Is the installer allowed to connect you to the grid?
Rules differ by country, and in some places by emirate. The table summarises what I could verify. Several sources conflict or are secondary, so confirm with your utility before signing.
| Country | What to check |
|---|---|
| UAE (Dubai) | Under DEWA's Shams Dubai programme, consultants and contractors must be enrolled with DEWA and hold a valid trade licence. Property Finder adds that DEWA publishes an approved list of panels and inverters. Ask whether the quoted models are on it. |
| UAE (other emirates) | Each utility sets its own approvals and export terms. Ask the installer to name the approval body and show the application steps in writing. |
| Saudi Arabia | The regulator published small-scale solar PV rules with net metering for systems from 1 kW. Procedures run through the Saudi Electricity Company, so confirm current requirements with SEC. |
| Qatar | Kahramaa manages contractor and consultant approvals. Its BeSolar route is described by some sources as net metering while others say no net metering exists, so ask Kahramaa directly about export credit. |
| Oman | Rooftop solar runs through the Sahim initiative, which the Middle East Institute describes as using minimum technical requirements for rooftop systems. Confirm how exports are paid. |
| Bahrain | A 2026 market monitor summarising official EWA information says household net metering applies up to 100 kW, with net billing for larger or non-residential systems. Confirm with EWA. |
| Kuwait | One 2026 compliance guide reports no retail net metering programme. Don't accept export-credit savings in a quote until the Ministry of Electricity, Water and Renewable Energy confirms them. |
Heat and dust: does the yield estimate include them?
Researchers at Hamad Bin Khalifa University describe dust accumulation and temperature-driven power loss as the two major environmental factors hurting panels in the Gulf. A Qatar University study (2012) estimated that 100 days of dust cut efficiency by about 10% on mono-crystalline panels. That's one old study on one panel type, not a rule for every roof, but it shows why cleaning isn't a footnote.
Put three questions to every Gulf installer:
- Does your yield estimate include heat and dust losses, or does it use lab ratings?
- What is the panel's temperature coefficient of power?
- Who cleans the panels, how often, what does it cost, and is there safe roof access and water supply?
Electricity tariffs matter too. A 2026 research preprint notes that low electricity tariffs are one reason residential solar adoption stays low in Saudi Arabia. When your bill is small, payback is longer, so every extra dirham, riyal or dinar you overpay stretches it further.
Red flags of an overpriced or risky solar quote
| Red flag | Why it matters | What to do |
|---|---|---|
| One lump-sum price | You can't see what you're paying for or compare it | Ask for an itemised quote |
| "Sign today" discount | NRG says a good installer gives you time to compare and ask questions | Ask for the offer in writing and take a few days |
| No panel or inverter model numbers | "Premium" can mean anything | Request datasheets |
| Savings promised with no assumptions | The number may rest on an optimistic tariff or yield | Ask for the software, tariff and loss assumptions |
| Price far above your other quotes, no explanation | You may be paying for margin, not quality | Ask what justifies the gap |
| Price far below the others | Energy Matters (Australia) lists unrealistically cheap quotes as a warning sign, and exclusions are a common reason | Check what's missing, and check the licence |
| Monthly payment shown, cash price hidden | Dealer fees and finance costs can sit inside the number | Ask for the cash price in writing |
| No proof of registration | In the UK, MCS is the most widely accepted certification; in Dubai, DEWA enrolment is required | Verify with the scheme or utility yourself |
Frequently asked questions
How many solar quotes should I get?
Get at least three. EnergySage recommends two to five. Fewer than three leaves you without a reliable midpoint, and more than five rarely adds information.
What is a good cost per watt for solar panels?
It depends on your market and system size. In October 2026, EnergySage's US marketplace average was about $2.60 per watt before incentives. UK figures from the Energy Saving Trust work out to roughly £1,690 per kWp. UAE guides range from AED 4 to 7 per watt for a villa system. Use these as sanity checks and let your own quotes set the real benchmark.
Is the cheapest solar quote the best one?
Not by default. The cheapest quote often leaves out approvals, meter fees or structural work, and it may use weaker equipment or shorter warranties. Add back what's missing, convert to cost per watt, then compare.
Can comparing quotes really save money?
EnergySage claims comparing multiple quotes can save as much as 25% on system cost. That is the marketplace's own claim, and results vary, but competing quotes give you bargaining power and a way to spot outliers.
How do I check that a solar installer is licensed?
Check with the body that controls grid connection where you live. In Dubai that's DEWA's list of enrolled consultants and contractors. In the UK it's the MCS register. Elsewhere, ask your utility or energy regulator which installers are approved, and don't rely on a certificate the installer shows you alone.
Bottom line
Turn every quote into cost per watt, add back whatever it leaves out, and compare equipment and warranties on paper. Treat pressure, vagueness and hidden finance costs as part of the price. In the Gulf, add one more test: is the installer approved by your utility, and does the yield estimate admit that heat and dust exist?
Note on figures. Prices, incentives and net metering rules change often and differ by country. All numbers above are estimates from the published sources linked in this article, dated where available, and the villa example is hypothetical. They are not quotes or financial advice. Get written quotes from licensed installers and confirm rules with your utility before you sign. Last updated: October 21, 2026.
Sources
- EnergySage: Why compare solar quotes?
- EnergySage: Solar panel cost in 2026 (data updated October 2026)
- NerdWallet: How to compare solar panel quotes
- NRG Clean Power: How to compare solar panel quotes
- SolarQuotes (Australia): Installing solar panels, 13 common mistakes (updated July 2026)
- Energy Matters (Australia): Solar quote red flags
- Electric Car Home: Find the right solar panel installer (UK)
- US CFPB: Consumer advisory on solar energy loans
- Mayer Brown: Regulatory clouds on the horizon for solar financing programs (January 2025)
- Solar.com: The fate of the 30% solar tax credit
- Whito: Solar panel cost UK (September 2026, citing Energy Saving Trust)
- The Green Age: Solar panels in 2026 (UK)
- Which?: Solar panel costs
- DEWA: Shams Dubai initiative
- Property Finder: Solar panels for homes in UAE
- VoltFlow: Solar panels in Dubai 2026
- Enerdata: Saudi Arabia updates its net metering scheme
- Research Square preprint: Rooftop PV for new villa developments in Saudi Arabia
- Majalla: Qatar's rooftop solar opportunity
- Smart Gulf Solar: Qatar market guide
- Middle East Institute: Solar power in the Gulf
- Horizon Strategies: GCC energy and cleantech monitor (reviewed October 2026)
- SurgePV: Middle East solar compliance 2026
- Hamad Bin Khalifa University: Solar cells for harsh desert environments (2016)
- Qatar University: Effects of climatic factors on solar PV performance in Qatar (2012)