3kW On-Grid Solar System in Coimbatore

Why 3kW Solar System for Your Home in Coimbatore?

Most homeowners in Coimbatore plan a 3kW solar panel system for their home. Why do they choose 3kW? Here is a simple data analysis for an on-grid system to reduce your electricity bill.

Most families today are nuclear or individual families, with 4 to 5 members living together. For their home, they can run up to 2 air conditioners of maximum 1.5 ton capacity. In Coimbatore, the temperature allows ACs to run at an average of 20 to 22 degrees Celsius.

One AC running approximately 5 hours daily consumes an average of 4 units per day. Two ACs together consume 7 to 8 units per day. Kitchen and other home appliances — fridge, washing machine, TV, and other electrical appliances including an electric geyser — consume over 8 units per day.

From the above data, we can conclude that the average daily consumption is 15 units of electricity. A 3000W to 3200W solar module produces a yearly average of 12 to 15 units per day. If you need a smaller system, check our 2kW on-grid solar system. For larger homes, see the 5kW on-grid solar system. Unsure which size fits? Read our 4kW solar panel guide.

Panel Configuration

You can install 6 panels of 540W to 555W each, or 5 TOPCon modules of 610W to 630W each. All configurations produce more or less equal generation. We checked the last one year of different customer generation data — the variation is only 40 to 50 units plus or minus annually.

Inverter Options

String Inverter: The most affordable brands we provide are Growatt, Polycab, V-Guard, SunGrow, and Deye. We provide customer choice for panels also — Adani, Vikram, Waaree, V-Guard, and more.

Micro Inverter: The best quality micro inverter with our service support is Enphase. Other Chinese brands are available, but their service support is questionable.

SolarEdge Optimiser: SolarEdge holds the patent for optimiser technology. It is also a very good choice for maximising panel-level performance.

Installation Quality Standards

Mounting Structure: We use pre-galvanised JSW C-channel for MMS, from leg to purlin and rafter, with SS 304 grade fasteners only.

Earthing: We use a 250-micron copper bonded rod for long-lasting earthing. The length of the earth rod is 2 metres.

Cabling: AC cable is 4 sq mm branded cable. DC cable is 6 sq mm.

Protection: SPD and MCB components are Havells brand. We provide a proper polycarbonate enclosure box — it is a quality product.

We provide essential quality products and workmanship designed for 25 years of system durability. We have learnt the importance of quality from installing more than 500 on-grid solar systems in recent years.

3kW Solar System Price After Subsidy in Tamil Nadu

Approximate system cost for a 3kW solar system in Coimbatore (within 50 km radius, as per our quality standards — we never compromise on quality): Rs 2,05,000

• PM Surya Ghar central subsidy: Rs 78,000
• Tamil Nadu state cabinet subsidy: Rs 22,000
• Your capital investment: Rs 1,05,000

The whole system saves approximately Rs 2,500 monthly on your electricity bill.

Return on Investment = Capital Investment ÷ Monthly Savings = Rs 1,05,000 ÷ Rs 2,500 = 42 months (3½ years)

We can also arrange bank loans from nationalised banks at 6.5% rate of interest. Use our solar subsidy calculator for your exact savings.

Subsidy amounts as per PM Surya Ghar and TN State Government scheme. Subject to TANGEDCO and government approval.

Warranty Details

Panel Warranty: All panel companies now provide 30-year warranty — 12 years replacement warranty and 30 years performance warranty.

DCR Panels: Only DCR (Domestic Content Requirement) panels are used for subsidy eligibility. We provide DCR certificates verified from the central government official portal.

5-Year Comprehensive Maintenance: As per PM Surya Ghar agreement, we provide comprehensive maintenance for 5 years with no service charge. This is 100% guaranteed — the customer and RK Solar Solutions sign a Rs 100 stamp paper agreement, which is uploaded to the PM Surya Ghar portal.

Why Choose RK Solar Solutions in Coimbatore?

We already serve more than 500 customers with our best services. Check PM Surya Ghar portal — search RK Solar Solutions as vendor to see our rating and installations.

We are Top 7 in Coimbatore, Top 20 in Tamil Nadu, and Top 40 in India among PM Surya Ghar empanelled solar vendors.

Our Recent 3kW Installations in Coimbatore

Commercial rooftop installation, Gandhipuram area, Coimbatore

Residential rooftop installation, Maruthamalai area, Coimbatore

What Our Customers Say