3kW Solar System Price in India 2026: Cost + Subsidy

What does a 3 kW solar system cost in India in 2026?

A 3 kW grid-connected home solar system in India works out to about ₹1.45 lakh at the MNRE benchmark cost used for the PM Surya Ghar subsidy (₹50,000/kW for the first 2 kW plus ₹45,000 for the third kW), while real installed quotes typically land near ₹1.56–1.80 lakh including GST, depending on the city, roof structure and module choice. After the ₹78,000 central subsidy, a 3 kW system costs roughly ₹78,000–1.02 lakh out of pocket.

TL;DR: Benchmark ₹1.45 lakh, market quotes ~₹1.56–1.8 lakh incl GST, central subsidy ₹78,000 fixed for 3 kW, several states add more (UP takes it to ₹1.08 lakh, Delhi to ₹1.56 lakh), generation ~360–430 units a month in North India, payback typically 4–5 years for high-consumption homes. The scheme runs until 31 March 2027.

Last verified: 6 November 2026

Where the ₹1.45 lakh benchmark comes from

The PM Surya Ghar subsidy is not paid on your invoice — it is computed from a benchmark cost fixed by MNRE when the scheme launched, effective 13 February 2024:

Source: MNRE's PM Surya Ghar guidelines; MNRE restated the benchmark history — down from ₹75,000/kWp in 2016 to ₹50,000/kWp in 2024 — in a Lok Sabha answer in August 2026. In special-category states (J&K, Himachal, Uttarakhand and others) the benchmark is higher — ₹55,000 and ₹49,500 — which is why their CFA rates are ₹33,000/₹19,800.

Important: the benchmark is a notional figure for the subsidy formula, not a quote you can demand from a vendor. Actual prices depend on module technology, mounting height, structure work, cabling length and city logistics.

What you will actually be quoted

A useful reality check is CREST's published cost-benefit example for a 3 kWp plant in Chandigarh: total installed cost ₹1.8 lakh including GST, generating ~321 units a month (Times of India, February 2026). Haryana's energy minister put a typical 1 kW residential plant at about ₹55,000 (Times of India, June 2026), which scales to about ₹1.65 lakh at 3 kW. Banks financing these systems commonly assume around ₹70,000/kW (Central Bank of India scheme page).

On GST: solar modules and devices carry 5% GST since 22 September 2025, and a turnkey residential EPC contract works out to roughly 8.9% effective GST under the 70:30 component split — electricity itself stays exempt. Ask vendors for the module vs EPC-services split in writing so you can see what you are paying GST on.

For context on how price scales with size, our home solar price guide for 2026 covers 1–10 kW, and commercial-sized plants follow a different economics entirely — see the 100 kW system cost guide.

Subsidy on a 3 kW system: ₹78,000 plus state top-ups

The central CFA for 3 kW is a flat ₹78,000, credited by DBT after commissioning. Several governments add their own money on top:

Every amount, with its government source and payment mechanics, is in our PM Surya Ghar state top-up guide. Eligibility, documents and the step-by-step claim process are in the application guide.

What a 3 kW system generates and saves

A 3 kW plant in North India typically generates about 360–430 units a month averaged over the year — our units-per-kW guide for North Indian cities shows the city-wise spread. CREST's Chandigarh example used ~321 units/month, a conservative number.

Worked example, with the assumptions stated: a home consuming about 700 units/month on a slab tariff, 3 kW plant generating ~390 units/month (North India average), surplus fully consumed by daytime load or credited under net metering. At CREST's tariff value of about ₹5.4/unit for offset units, monthly bill savings come to roughly ₹2,000–2,100 on a ₹1,02,000 net investment — about a 4.9-year payback, matching CREST's published figure, with 25-year plant life leaving 19–20 years of essentially free generation.

Roof area needed: about 18–22 sq m for 3 kWp in CREST's example; our roof area guide per kW covers the general rule of thumb.

Deadline: 31 March 2027

PM Surya Ghar is approved for implementation until 31 March 2027 (MNRE guidelines). Applications filed after the window closes would not carry the CFA, so the installation date — not just registration — needs to fit inside the scheme period. Over 33 lakh rooftop systems were installed under the scheme and its predecessor between 2021-22 and 2025-26, with average CFA release around 15 days after the redemption request (MNRE, Lok Sabha, August 2026).

Frequently Asked Questions

How much does a 3 kW solar system cost after subsidy?

Roughly ₹78,000–1.02 lakh after the ₹78,000 central CFA, assuming a gross price between the ₹1.45 lakh MNRE benchmark and typical market quotes near ₹1.8 lakh including GST. State top-ups reduce it further — to about ₹1.02 lakh gross net cost in Delhi, which pays its own ₹78,000 on top.

Is the ₹1.45 lakh benchmark cost the actual price?

No. It is the notional figure MNRE uses to calculate the 60/40 subsidy. Your actual quote depends on the vendor, module brand, structure height and city.

How many solar panels are in a 3 kW system?

About 6–7 panels of 540–575 Wp each, needing roughly 18–22 sq m of shadow-free roof area.

What is the subsidy for 3 kW under PM Surya Ghar?

₹78,000 — ₹30,000/kW for the first 2 kW plus ₹18,000 for the third kW, capped at that amount for all systems of 3 kW and above.

How much electricity does a 3 kW system produce per day?

About 12–14 units a day on annual average in North India (360–430 units/month), more in summer, less in monsoon and winter.

Is 3 kW enough for my home?

For homes consuming 300–400 units/month it usually offsets most of the bill; homes using 600+ units benefit from 5 kW, though the subsidy stops growing beyond 3 kW. Size to your consumption — surplus exports are settled at modest rates at year-end.

Does the subsidy apply to commercial installations?

No — PM Surya Ghar CFA is only for residential homes, and housing societies/RWAs for common facilities. Commercial and industrial buyers use CAPEX/RESCO structures instead.