If you are considering rooftop solar in Rajasthan, the two questions that matter most are: what will it cost, and how much will the government subsidy reduce that? This guide breaks down solar cost, the PM Surya Ghar subsidy, and the payback maths — so you can estimate your own numbers with confidence.
What drives solar cost
Rooftop solar is usually priced per kilowatt (kW) of capacity installed. A turnkey residential system in Rajasthan typically lands in the region of ₹50,000–₹60,000 per kW before subsidy, depending on:
- Panel and inverter brand and quality
- Mounting structure and roof type
- Cable runs, earthing and protection
- On-grid vs hybrid (battery adds cost)
Bigger systems cost less per kW; battery-backed hybrid systems cost more.
The PM Surya Ghar subsidy
PM Surya Ghar: Muft Bijli Yojana is the central government's rooftop solar subsidy for residential consumers. The slabs are:
- Up to 2 kW: ₹30,000 per kW
- 3rd kW (2–3 kW): ₹18,000 per kW
- 3 kW and above: capped at ₹78,000
So a 3 kW system attracts the maximum ₹78,000 subsidy. Any home with a valid electricity connection and suitable, shadow-free roof space is generally eligible.
How to size your system
A rough rule: you need about 80–100 sq ft of shadow-free roof per kW. To offset your bill, size the system to your consumption. In Rajasthan, one kW generates roughly 4.5 units (kWh) per day, or about 135 units a month.
If your home uses ~400 units a month, a system of roughly 3 kW covers most of it — which also happens to hit the maximum subsidy slab.
A worked example
Consider a 3 kW residential system:
- Gross cost (at ~₹55,000/kW): about ₹1,65,000
- PM Surya Ghar subsidy: ₹78,000
- Net cost: about ₹87,000
- Generation: ~4.5 units/kW/day → ~405 units/month
- At ₹8/unit, monthly savings: roughly ₹3,200
- Payback: around 2.5–3 years
After payback, the system keeps producing for 20+ more years — that is two decades of largely free power, plus a hedge against rising tariffs.
Don't forget net-metering
For on-grid systems, net-metering credits your excess generation against your bill. A good installer completes the net-metering application, feasibility and DISCOM approvals for you — this is part of the value, not an extra you should chase yourself.
Estimate your own numbers
Rather than rely on a salesperson's figure, run your own estimate. Our solar savings calculator takes your monthly bill or units and your district, then shows recommended system size, cost after subsidy, monthly savings, payback and 25-year lifetime savings. It uses editable, realistic rates for Rajasthan.
Choosing who installs it
The subsidy and payback only hold if the system is installed well and the paperwork is done right. Shree Kalyan Projects & Solutions handles design, supply, installation, the full PM Surya Ghar subsidy process, net-metering and DISCOM approvals — backed by 16 years of electrical engineering experience.
The bottom line
Rooftop solar in Rajasthan is one of the most attractive investments available to homeowners, thanks to strong sunlight and a generous central subsidy. Understand the slabs, size the system to your usage, and pick an installer who handles the whole process.
Shree Kalyan Projects & Solutions is a ‘B’ Class licensed electrical contractor (Licence No. 14090) with 16 years serving cement, power, chemical & solar plants across Rajasthan.
