A rooftop solar quotation in India should carry twelve parts: your company details, the customer's details, a system summary, the components with make and quantity, the price with GST, the subsidy, the net cost, the expected generation and savings, the payment terms, the scope of work, the warranty and service terms, and the validity and acceptance. A customer compares quotations line by line, so a complete format wins trust before price is even discussed. Here is each part, what to put in it, and what to leave out.
1. Your company details
- Company name and logo, registered address, GSTIN, phone, email and website.
- Your registration or empanelment with the DISCOM or on the PM Surya Ghar portal, where it applies.
- A quotation number and date, so revisions can be told apart.
2. Customer details
- Name exactly as on the electricity bill, because DISCOM forms will be matched against it.
- Site address, mobile number and email.
- Consumer number, DISCOM, connection type, phase and sanctioned load.
3. System summary
One short block that a customer can read in ten seconds: system capacity in kW, type (on-grid, off-grid or hybrid), number and wattage of panels, inverter capacity, mounting type and roof type. If you designed the roof, add a picture of the layout. It answers the question every customer asks: where will the panels go?
4. Components
List the main components as separate lines with make, model or rating, and quantity:
- Solar modules, with technology (for example mono PERC or TOPCon) and whether they are DCR (domestic content) modules, which subsidised residential systems require.
- Inverter, with capacity and phase.
- Mounting structure, with material and finish.
- DC and AC cables, with size.
- DC and AC distribution boxes with protection devices.
- Earthing and lightning arrester.
- Net meter, if you supply it, or a note that the DISCOM supplies it.
5. Price and GST
Show either a rate per kW multiplied by capacity, or a line-item price list that adds up to the total. Then show GST clearly: CGST and SGST when your company and the site are in the same state, IGST when they are not.
Since September 2025, solar power devices such as modules and inverters carry 5 percent GST, and installation services carry 18 percent. For a complete supply and installation contract many installers apply the deemed 70:30 split between goods and services. Which treatment fits your contracts is for your accountant to confirm; our GST guide explains the options.
6. Subsidy
For residential customers under PM Surya Ghar: Muft Bijli Yojana, show the central subsidy as its own line: Rs 30,000 per kW for the first 2 kW, Rs 18,000 for the third kW, and a ceiling of Rs 78,000 for 3 kW and above. Add any state subsidy separately. Confirm the slabs on pmsuryaghar.gov.in and your state's notification before you send, because they are set by government and can change.
State plainly that the customer pays the full price and that the subsidy is credited to their bank account after installation, inspection and commissioning. Do not promise a date.
7. Net cost
Show the total with GST, minus the subsidy, as the effective cost to the customer. This is the number they will compare, so make it easy to find and impossible to misread.
8. Expected generation and savings
Show the expected units per day, month and year, and the savings at the customer's tariff. State the basis: the location, the tilt and direction, the shading considered and the losses assumed. A range is more honest than a single number, and a figure that comes from a design with real shading is more credible than a rule of thumb.
Payback is useful if it is calculated from the net cost and the yearly saving. Avoid promising returns.
9. Payment terms
- Stages, for example an advance on booking, a payment on material delivery and the balance on commissioning.
- Accepted payment methods and your bank details.
- Loan options if you work with banks, without promising approval.
10. Scope of work
Say what is included and what is not. Most disputes start here.
- Included: supply, installation, testing, commissioning, DISCOM paperwork, subsidy application support.
- Excluded or charged separately: civil work, elevated structures above a stated height, DISCOM fees, meter testing fees, cable runs beyond a stated length, roof waterproofing.
- Timeline from booking to installation, noting that approvals depend on the DISCOM.
11. Warranty and service
- Module product and performance warranty, as the manufacturer gives it.
- Inverter warranty, as the manufacturer gives it.
- Your workmanship warranty and what it covers.
- Free service visits included, and the AMC offered after that.
12. Validity and acceptance
Give a validity date, because module and metal prices move. End with a place for the customer's acceptance, or a link they can accept online. Keep every revision with its date, so the signed version can always be found.
What to leave out
- Claims you cannot back, such as guaranteed savings or a fixed subsidy date.
- Brand names you may substitute; say 'or equivalent' only if the customer agrees.
- Long legal text in small print. Put the terms that matter in plain words.
How RAYVO builds this quotation
In RAYVO the quotation starts from the lead or the 3D design. Capacity, panels and items come from the design's bill of materials, GST is split by place of supply, the PM Surya Ghar subsidy line follows the slabs in your settings, and the PDF carries your logo, layout picture, expected generation and savings. You can share it on WhatsApp, let the customer accept from a link, and turn it into a project and an invoice when they say yes. Companies that already have their own quotation design can upload it, and RAYVO fills it in the same font.
Frequently asked questions
Company and customer details, system summary, components with make and quantity, price with GST, subsidy, net cost, expected generation and savings, payment terms, scope of work, warranty, and a validity date.
Show the full price, then the subsidy as a separate line, then the net cost. The customer pays the full price and receives the subsidy in their bank account later.
Yes, many customers prefer it for comparison. A line-item quotation takes longer but shows what the customer pays for and makes changes easier.
Many installers use 7 to 30 days, because module and structure prices change. State the date clearly.
For residential systems claiming the PM Surya Ghar subsidy, yes. Domestic content modules are required for the subsidy, so state it on the module line.