Is a 3 kW solar system right for your home?
A 3 kW system can suit many Indian homes, but capacity should be based on annual electricity consumption, daytime usage, tariff, sanctioned load, shadow-free roof area and local net-metering rules. Selecting 3 kW only because it is a popular package can produce surplus generation or leave a large part of the bill untouched.
Use the calculator with your actual monthly bill and PIN code, then validate the recommendation through a site survey.
PM Surya Ghar subsidy for a 3 kW system
The official PM Surya Ghar portal states central assistance of ₹30,000 per kW for the first 2 kW and ₹18,000 for the additional 1 kW, making the central subsidy ₹78,000 for an eligible 3 kW residential installation. The subsidy is capped at ₹78,000 for systems larger than 3 kW.
Final eligibility depends on current scheme rules, residential connection status, approved workflow, DCR-compliant equipment, DISCOM inspection and successful commissioning.
Roof area, generation and savings
Required roof area depends on module dimensions, layout, setbacks, access paths, shading and mounting method. Generation varies with location, orientation, tilt, temperature, losses and maintenance. Savings also depend on tariff and how imported and exported electricity are settled.
The calculator keeps these assumptions visible and editable so the result can be tested instead of accepted blindly.
Installation checklist before you approve a proposal
- Roof condition and shadow analysis completed.
- Sanctioned load and DISCOM feasibility checked.
- Module, inverter and structure specifications documented.
- Earthing, lightning and electrical protection included.
- Portal, net-metering, testing and subsidy responsibilities stated.
- Monitoring, warranties and service process explained.