Question 1

How to calculate solar panel size for my home?

Accepted Answer

Divide your monthly electricity consumption (in units) by the average solar yield per kW in your region. In North India, 1 kW generates about 117 units/month (1,400/year). So if you consume 600 units/month, you need approximately a 5 kW system. Our calculator above does this automatically based on your bill and city.

Question 2

What is the cost of a 5kW solar system in Delhi 2026?

Accepted Answer

A 5 kW rooftop solar system (1-phase, string inverter, GST-incl.) costs ₹3,43,035 before subsidies. After the PM Surya Ghar central subsidy of ₹78,000 and Delhi's ₹30,000 state subsidy, you pay ₹2,35,035. Delhi residents also earn ₹3/unit (≤3 kW) or ₹2/unit (3–10 kW) under the Generation-Based Incentive for 5 years.

Question 3

How much electricity does a 10kW solar system produce?

Accepted Answer

A 10 kW system produces approximately 1,167 units per month (14,000 units/year) in North India. This is enough to offset bills of ₹8,000-10,000 per month for residential consumers, or around ₹10,000/month for commercial properties at ₹8.50/unit tariff.

Question 4

What is the Delhi Generation-Based Incentive (GBI) for solar?

Accepted Answer

The Delhi government pays solar owners per unit of electricity generated for 5 years from commissioning. Residential consumers with ≤3 kW systems get ₹3/unit, 3-10 kW systems get ₹2/unit. RWAs get ₹2/unit for plants up to 500 kW. Commercial consumers get ₹1/unit. This is on top of net metering savings and subsidies.

Question 5

What subsidies are available for rooftop solar in India?

Accepted Answer

Under PM Surya Ghar Yojana 2026, all residential consumers get a flat ₹78,000 central subsidy. Some states offer additional subsidies — Delhi and UP provide ₹30,000 extra. Commercial installations don't get subsidies but qualify for 40% accelerated depreciation (approx. 22% tax benefit). Bridgeway Power handles all paperwork.

Question 6

How long does rooftop solar take to pay for itself?

Accepted Answer

With current subsidies, most residential systems pay back in 3-5 years. After payback, you get essentially free electricity for 20+ years (panel warranty period). Higher bills mean faster payback — a ₹10,000/month bill typically sees payback in under 4 years.

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