About
When assessing solar potential for properties in Kolkata, understanding the roof's physical characteristics is a necessary first step. Expertise in conducting site surveys allows for a detailed evaluation of the available mounting area. The process includes thorough shading analysis to determine optimal panel placement and maximum energy yield. This technical assessment helps establish the realistic kilowatt capacity that a specific rooftop can reliably support, ensuring the system design matches the structure's actual potential.
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Rooftop solar in Kolkata, West Bengal
A standard residential rooftop solar system in Kolkata sizes between 1 kW and 5 kW depending on monthly consumption. Most Kolkata homeowners pick a 3 kW system — it covers 300–400 units a month and captures the full ₹78,000 PM-Surya Ghar central subsidy.
Installed cost for a 3 kW system runs ₹1.8 lakh to ₹2.4 lakh; after the central subsidy your net outlay is ₹1.0 lakh to ₹1.6 lakh. Payback typically lands between 3.5 and 5 years — and the panels carry a 25-year warranty. Solartron can quote your specific roof; use the Get Quote form above or call 062907 94417.
The installer handles the PM-Surya Ghar registration, DISCOM net-metering application, system installation, and commissioning. Confirm AMC terms, panel warranty (look for Tier-1 manufacturer + 25-year linear-power guarantee), and inverter warranty (10 years minimum) before signing.
What to check before booking
- Site visit and shading analysis — this determines the realistic kW your roof can support
- PM-Surya Ghar registration done on your behalf, with the ₹78,000 subsidy credited directly to your bank
- DISCOM net-metering application and commissioning — installer should handle this end-to-end
- Tier-1 panels with 25-year linear-power warranty (degradation ≤0.55% per year)
- Inverter warranty (10 years minimum) and on-site replacement policy
- AMC contract for at least 5 years (panel cleaning, performance check, inverter health)
Frequently asked questions
How much PM-Surya Ghar subsidy can I get in Kolkata?
PM-Surya Ghar: Muft Bijli Yojana offers up to ₹78,000 for a residential rooftop solar system (₹30,000 per kW for the first 2 kW, ₹18,000 for the 3rd kW). Most households choose a 3 kW system to capture the full subsidy. West Bengal residents apply through the national pmsuryaghar.gov.in portal — your DISCOM and the installer handle the rest.
What's the typical cost of a 3 kW system in Kolkata?
A 3 kW grid-connected residential rooftop system costs ₹1.8 lakh to ₹2.4 lakh installed (₹60,000 – ₹80,000 per kW). After the ₹78,000 PM-Surya Ghar subsidy, your net cost is ₹1.0 lakh to ₹1.6 lakh. Payback for a typical household in West Bengal is 3.5 – 5 years; the panels carry a 25-year warranty.
Does Solartron handle net-metering paperwork?
Reputable solar installers handle the net-metering and DISCOM application end-to-end — site survey, design, DISCOM application, installation, commissioning, and meter installation. Confirm with Solartron when you call (062907 94417) or fill the Get Quote form above.
What panels and inverters does Solartron typically install?
For PM-Surya Ghar eligibility, panels must be from approved manufacturers — typically Tier-1 brands such as Adani, Vikram, Waaree, Tata Power Solar, Premier Energies, or Loom Solar. Inverters are usually Growatt, Solis, Microtek, Polycab, or Luminous. Ask for the specific model and the 25-year linear-power warranty document.
How long does installation take?
Typical timeline: 3 days for site survey + design, 10–20 days for DISCOM approval, 1–2 days for installation, 7–15 days for net-meter installation and commissioning. End-to-end is 4–8 weeks for most residential installations in Kolkata.
Location
21, Hemanta Basu Sarani, beside Raj Bhawan, Lal Dighi, B.B.D. Bagh, Kolkata, West Bengal 700062, India
View on Google Maps →Opening hours
| Sunday | Closed |
|---|---|
| Monday | 10:00 – 18:00 |
| Tuesday | 10:00 – 18:00 |
| Wednesday | 10:00 – 18:00 |
| Thursday | 10:00 – 18:00 |
| Friday | 10:00 – 18:00 |
| Saturday | 10:00 – 14:30 |