How to Compare Solar Quotes (2026)
Published 2026-02-20 · Updated 2026-07-07 · MySunROI Research Team
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Get 3–5 quotes and compare cost per watt ($/W), estimated production (kWh/year), equipment brands, and warranties — not just total price. Use our calculator to benchmark offers.
Cost per watt — the #1 metric
Divide total cash price by system size in watts. US average ~$2.75–$3.50/W in 2026. A $19,800 quote for 6 kW = $3.30/W. Lower $/W usually means better value if equipment quality is comparable.
Always compare pre-incentive $/W first, then calculate net cost after the <a href="/guides/solar-tax-credit-2026/" class="text-brand-600 underline">30% ITC</a>.
Quote comparison checklist
- System size (kW) and panel count
- Estimated annual production (kWh) — verify with PVWatts or installer model
- Panel and inverter brands + warranty lengths
- Total cost before/after ITC (itemized)
- Financing APR and dealer fees if loan
- Roof work, permits, and monitoring included?
- Cost per watt explained
Red flags in solar quotes
Pressure to sign same day, unclear production guarantees, or lease/PPA pitched when you wanted to buy are warning signs. Walk away from quotes that omit inverter brand or use "custom" panels with no spec sheet.
- Escalating lease payment clauses
- Production guarantee below 90% of reasonable estimate
- No mention of utility interconnection timeline
- Lease vs buy guide
After you pick a quote
Verify contractor license and insurance, read the interconnection agreement, and confirm ITC eligibility in writing before signing. Use our <a href="/get-solar-quotes/" class="text-brand-600 underline">quote comparison page</a> to start.
Solar costs by state
Frequently Asked Questions
How many quotes should I get?
At least 3 from reputable local installers with verified reviews.
What is a good cost per watt in 2026?
Under $3.20/W cash price is competitive in most US markets before incentives.
Should I negotiate?
Yes — installers expect comparison shopping. Mention competing quotes.