Rooftop Solar Quotation Format: What to Include and How to Price It
A rooftop solar quotation should state the system size (kW) and type (on-grid, off-grid or hybrid), panel and inverter make and wattage, structure, cabling and protection, installation and DISCOM net-metering work, warranty periods, the price split into supply and installation with GST, subsidy assistance, a payment schedule (for example 25% advance, 70% before dispatch, 5% on commissioning), validity and terms.
Sections a solar quote needs
- System summary – size in kW, type, expected generation per year.
- Supply – modules (make, wattage, type), inverter, mounting structure, DC/AC cables, ACDB/DCDB, earthing and lightning arrestor.
- Installation – site survey, installation, testing and commissioning, net-meter application and DISCOM coordination.
- Optional add-ons – monitoring, cleaning kit, extended AMC, battery backup.
- Warranties – module performance, product and inverter warranty periods as per the manufacturer.
- Subsidy – what assistance you provide with the government rooftop subsidy, and who receives it.
- Payment schedule.
- Validity – short (7–15 days), because module prices move.
Pricing and GST
Many installers quote residential customers a tax-inclusive price and show supply and installation as separate sections so the GST on each is clear. Confirm the applicable rates for your contract structure with your tax adviser.
A schedule that protects cash flow
| Stage | Share |
|---|---|
| Advance with purchase order | 25% |
| Before dispatch of material | 70% |
| On installation & commissioning | 5% |
Use the solar template
Invoice24's solar quotation template starts with these sections, tax-inclusive prices and the 25/70/5 schedule – and creates one invoice per stage when the customer pays.
Frequently asked questions
Should a solar quotation include subsidy?
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Mention the scheme and what help you provide, but show your price before subsidy – the subsidy is usually credited to the customer directly.
How long should a solar quotation be valid?
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7 to 15 days is typical because module and inverter prices change often.
GST invoices, quotations with client approval and branded letterheads – private, offline-ready and free.