3 kW solar system for Kerala homes.
The most popular size for Kerala homes, and the smallest system that gets the full ₹78,000 subsidy. These figures come from our standard 3 kW proposal.
At a glance
Our 3 kW system in numbers.
| System | 3 kWp, single phase, grid-connected |
|---|---|
| Panels | 6 × 550 Wp Mono PERC or bifacial DCR panels (Adani, Waaree or Vikram) |
| Inverter | 3 kW on-grid inverter with online monitoring (Solis, Growatt or Polycab) |
| Roof area | About 300 sq.ft, flat or sloped, panels tilted 10 to 12° facing south |
| Generation, clear day | 12 to 15 units a day |
| Generation, year-round average | About 11 to 12 units a day, around 350 units a month |
| Indicative price | ₹2,05,000 for design, supply, installation and commissioning |
| PM Surya Ghar subsidy | ₹78,000 back to your bank, so about ₹1,27,000 after subsidy |
| Timeline | Materials within 7 days of the advance, installation within 7 to 15 days of delivery, and commissioning within 10 days of installation and KSEB approval |
Clear-day figures are from our proposals and depend on the site. The year-round average uses the same Kerala assumptions as our solar calculator and includes the monsoon months. Your roof's direction, tilt and shade change the real numbers, which we measure on the free site visit.
Components
What goes into a 3 kW system.
| Component | Specification | Make | Qty |
|---|---|---|---|
| Solar panels | 550 Wp Mono PERC / bifacial, DCR | Adani / Waaree / Vikram | 6 |
| Inverter | Single or three-phase on-grid inverter with online monitoring | Solis / Growatt / Polycab | 1 |
| DC distribution box | PV fuses at input, DC isolator, Type-2 DC surge protection, IP65 enclosure | ABB / Eaton / Mersen | 1 |
| AC distribution box | MCB and Type-2 AC surge protection, IP54 enclosure | ABB / Eaton / Mersen / Citel | 1 |
| DC cables | UV-rated solar copper cable, cross-linked sheath and insulation | Apar / Seichem | As needed |
| AC cables | PVC/XLPE aluminium or copper, sized to load | Apar / Polycab | As needed |
| Earthing | Maintenance-free chemical earthing, copper-bonded rod (14 mm, 1.2 m) | Excel Earthing | 2 sets |
| Lightning protection | Single-spike air termination rod, insulated base, chemical earth kit | Excel Earthing | 1 set |
| Solar energy meter | Watt-hour meter for generation monitoring | L&T | 1 |
| Mounting structure | Hot-dip galvanised / epoxy-coated GP tubes for flat or sloped roofs | Apollo | 1 set |
Costs and terms
What you pay, and to whom.
| System price | ₹2,05,000 (indicative; final price depends on roof type and site) |
|---|---|
| KSEB application fee | About ₹1,000 |
| KSEB registration fee | About ₹3,540 per kW; part of it is refunded by KSEB after commissioning |
| Net meter | About ₹5,000 if KSEB does not supply it |
| Extra work | Load enhancement or three-phase conversion, if needed, is quoted separately |
| Payment | 70% with the order, 20% when materials are delivered and installed, 10% on commissioning |
| Warranty | 5-year system warranty; panels 25-year performance warranty (at least 90% output at 10 years, 80% at 25 years); inverter 5 to 10 years by model |
KSEB charges are paid to KSEB and can change. We list the current amounts in your quote.
What is included
From design to net meter.
KSEB paperwork
Feasibility certificate from your KSEB section office, registration, testing and the net-meter change, all handled by us.
Online monitoring
See generation on your phone through the inverter app. You provide Wi-Fi near the inverter.
Warranty support
Free inspection visits during the 5-year system warranty, and training on safe operation.
Questions we hear
Frequently asked questions.
Still unsure? Call +91 9061626868 and talk to an engineer directly.
What is the price of a 3 kW solar system in Kerala?
Our indicative price is ₹2,05,000 for design, supply, installation and commissioning, before the ₹78,000 PM Surya Ghar subsidy. KSEB fees are extra. The final price depends on your roof type and site.
How many units does a 3 kW solar system produce?
12 to 15 units on a clear day, and about 11 to 12 units a day averaged across the year including the monsoon, which is around 350 units a month.
How much roof space does a 3 kW system need?
About 300 sq.ft of shade-free roof for 6 panels. Flat and sloped roofs both work, and the mounting is designed for your roof.
How much subsidy do I get for 3 kW?
₹78,000 under PM Surya Ghar, the maximum for a home, because the system uses DCR panels. It is paid into your bank account after KSEB fits the net meter. See how the subsidy works.
What warranty do I get?
A 5-year system warranty from us, a 25-year performance warranty on the panels (at least 90% output at 10 years and 80% at 25 years), and the inverter maker's warranty, usually 5 to 10 years.
Keep reading
Plan your rooftop solar step by step.
Solar calculatorSize your system from your KSEB bill
3 kW solar systemFor homes using 300 to 400 units a monthYou're here
5 kW solar systemFor bigger bills and AC homes
8 kW solar systemThree-phase, for large homes and offices
On-grid vs hybridDo you need a battery?
Solar in the monsoonWhat happens in June to September
PM Surya Ghar subsidyHow the ₹78,000 subsidy works
KSEB feasibility checkCheck your transformer before you buy