Solar Quote Comparison Tool
Comparing solar quotes? Enter up to four offers to see price per watt, warranties, and what each one leaves out, side by side. Your numbers stay in your browser. We compare facts only, and we never rank installers or pick a winner.
Nothing you enter here is sent anywhere or saved after you leave this page.
Side by side
Price per watt differs by 3% across these quotes. All listed items are included.
| Item | Quote A | Quote B |
|---|---|---|
| Total price | $12,500 | $14,200 |
| System size | 5 kW | 5.5 kW |
| Price per watt | $2.50 | $2.58 |
| Panel warranty | 25 years | 25 years |
| Inverter warranty | 10 years | 12 years |
| Workmanship warranty | 5 years | 10 years |
| Missing items | None | None |
Questions to ask
Ask each installer who honours the warranties, and for references from recent jobs.
How this is calculated
Price per watt
Systems differ in size, so total price is misleading. We divide each price by its size in watts, which puts every quote on the same scale.
Price per watt = quote price ÷ (kW × 1,000)
Warranties
We list panel, inverter, and workmanship warranties together. Short terms prompt a question to ask, because a warranty is only useful if the company stands behind it.
Missing items
Quotes often differ in what they include. We flag missing permits, monitoring, and access costs, and turn each gap into a question for that installer.
Worked example: two quotes that look different
Quote A is $12,500 for 5 kW, or $2.50 per watt. Quote B is $14,200 for 5.5 kW, or $2.58 per watt.
The higher total buys a larger system and longer warranties here, so per-watt price and scope tell you more than the headline figure.
How accurate is this?
The sums are exact for what you enter. The tool cannot judge equipment quality, installer reputation, or whether a company will still be trading in ten years, so check licences, reviews, and references yourself.
Common mistakes
- Choosing on total price without checking system size
- Ignoring who honours the warranty if the installer closes
- Comparing different panel output figures without checking the rating
- Assuming exclusions such as electrical upgrades are minor
Limits of this tool
- It compares only what you type in
- It does not check installer licences or equipment certification
- Your data stays on this device and is not saved after you leave
What to do next
- Check whether the prices look reasonable with the installation cost calculator
- Test each quote in the payback calculator
Frequently asked questions
How do I compare solar quotes?
Compare price per watt, equipment, warranties, and exactly what is included. Then ask each installer about anything missing.
How many solar quotes should I get?
Getting at least three gives you a useful view of local prices and shows which items vary.
Is the cheapest solar quote the best?
Not always. A low price can leave out permits, access, or warranty cover, so compare the full scope.
Do you recommend an installer?
No. This tool compares the facts you enter and never ranks companies. If we ever add commercial links, we will disclose them.