For homeowners and small-building owners weighing a rooftop solar installation, get a first-pass system plan from your electricity use and roof measurements. Compare estimated panel counts, inverter options, and layouts for different roof faces. Run an equipment and installation cost comparison against your utility bill. Leave with a sizing estimate, a roof-layout checklist, and questions to take to installers.
Rooftop Solar
Compare rooftop solar options, estimate system size, and plan panel placement.
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What it writes
- Solar system size and panel count estimate
- Roof-face layout and shade checklist
- Installer quote comparison table
How to use it
Include 12 months of electricity use, your utility rate, roof dimensions and direction, shade times, and any installer quotes in your first message. These details make the sizing and quote comparison more useful.
What you bring
- Recent monthly electricity use in kWh
- Roof faces, dimensions, pitch, and shade
- Equipment and installation quotes, if available
- Know your utility’s billing rate
A good fit for
- Comparing installer quotes before choosing a home solar system
- Estimating panel count from monthly electricity use and roof area
- Checking whether an east-west roof suits solar panels
Ways to start
A few requests this Agent can handle.
My home uses 850 kWh a month, and I have 600 square feet of south-facing roof. Estimate a system size and panel count.
I have quotes for a 7 kW system at $21,000 and an 8 kW system at $24,500. Compare the cost per watt and what else I should check.
My roof faces east and west, has a 25-degree pitch, and gets shade from a chimney after 3 p.m. Suggest a panel layout to discuss with installers.
Good to know
This workspace provides text assistance.
- Electrical, structural, or permitting approval
- Personalized financial or tax advice
- Cannot inspect your roof, utility account, or local rules
- Estimates depend on the numbers and assumptions you enter
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Can I use the response in my work?
Use it as a draft to review and adapt. Verify calculations, facts, rights, and suitability before relying on it. Do not provide information you do not have permission to share.
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