Last updated: 21 June 2026
1kW Solar Subsidy in India
Estimate the subsidy and household economics for a 1 kW rooftop solar system using editable cost, tariff and state solar-yield assumptions.
Independent calculator — not a government website.
Central subsidy slabs
For eligible residential households under PM Surya Ghar.
Up to 1 kW
₹30,000
Up to 2 kW
₹60,000
3 kW or higher
₹78,000
maximum
No extra central subsidy beyond 3 kW.
Central subsidy estimate for 1 kW
For an eligible residential household, the default central subsidy estimate for 1 kW is ₹30,000. The calculator shows zero for commercial premises and always flags that final eligibility must be verified.
Typical planning figures for 1 kW
At the default India yield of 4.2 units per kW per day, a 1 kW system estimates about 126 units a month. At ₹60,000 per kW, gross cost starts at ₹60,000 before site-specific items.
- Approximate roof area: 100 sq ft
- Indicative monthly generation: 126 units
- Actual bill savings depend on self-use, tariff and metering rules
Who may consider a 1 kW system
A 1 kW system can be a starting point when annual electricity use, available roof area and budget align. Use the calculator with a 12-month consumption average, then confirm the proposed capacity during a technical survey and DISCOM process.
Frequently asked questions
Clear answers, with the important caveats left in.
How much subsidy is estimated for 1 kW?
The default central estimate is ₹30,000 for an eligible residential household. Verify the current rule and your eligibility before applying.
How much roof area does 1 kW need?
The calculator uses about 100 sq ft, based on a conservative planning assumption of 100 sq ft per kW.
How many units can 1 kW generate?
At 4.2 units per kW per day, the estimate is roughly 126 units per month. Actual output varies by location and site.
How accurate is this calculator?
It is a planning estimate based on the values you enter, a state-level solar-yield assumption and the published central subsidy slabs. Shade, roof direction, equipment performance, local tariff design and approval rules can materially change the real outcome.
Is this website official?
No. This is an independent calculator and is not affiliated with the Government of India, MNRE, PM Surya Ghar or any DISCOM. Verify eligibility and subsidy amounts on the official portal and with your DISCOM.
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