01.
What is the price of a 3 kW solar power plant in Kerala?
An Emerald 3 kW on-grid rooftop plant costs about ₹2,00,000 before subsidy and about ₹1,22,000 after the ₹78,000 PM Surya Ghar subsidy. The final price is confirmed after a free site survey, based on roof type, structure height and cable runs.
03.
What is the payback period of a 3 kW solar system?
At ₹7 a unit, a 3 kW plant saves about ₹29,484 a year. With an investment of ₹1,22,000 after subsidy, it pays for itself in about 4.1 years, a simple annual return of around 24%.
05.
How many panels are in a 3 kW solar system?
Six panels of 540–555 Wp each, needing about 300 sq ft of shadow-free roof.
07.
How much subsidy is available for rooftop solar under PM Surya Ghar?
For residential grid-connected rooftop solar, the PM Surya Ghar: Muft Bijli Yojana gives ₹30,000 per kW for the first 2 kW and ₹18,000 for the third kW, capped at ₹78,000. So 1 kW gets ₹30,000, 2 kW gets ₹60,000 and 3 kW or more gets ₹78,000. The subsidy is credited to your bank account after commissioning and inspection, as per prevailing government norms.
09.
How many units does 1 kW of solar generate in Kerala?
About 3.9–4 units a day on average, or roughly 117–120 units a month and 1,400 units a year. Generation is highest from January to May and lower during the monsoon; the annual average already accounts for cloudy and rainy days.
11.
What is the payback period of rooftop solar?
At ₹7 a unit, residential plants pay back in about 4.1 years (3 kW), 4.8 years (5 kW) and 5.3 years (7 kW), equal to a simple annual return of 19–24%. Panels carry a 25–30-year performance warranty, so you enjoy 20 or more years of near-free power after payback. Commercial plants typically pay back in 3–5 years with accelerated depreciation.
02.
How many units does a 3 kW solar plant generate per day?
About 11.7 units a day on average in Kerala, which adds up to roughly 351 units a month and 4,200 units a year.
04.
Can a 3 kW solar plant run an AC and an EV?
One 1.5 ton 3-star AC used 8 hours a day takes about 38% of a 3 kW plant's output, and an electric scooter riding 1,000 km a month takes about 7%. Adding a car that drives 1,500 km a month (about 250 units) on top of a full home load needs a 5 kW plant.
06.
How much does a rooftop solar power plant cost in Kerala?
Indicative Emerald prices for residential on-grid plants after the ₹78,000 PM Surya Ghar subsidy are about ₹1,22,000 for 3 kW, ₹2,37,000 for 5 kW and ₹3,62,000 for 7 kW. Prices include panels, inverter, galvanised structure, earthing, lightning arrester, ACDB/DCDB, cabling, net-meter liaison and commissioning. Hybrid and off-grid systems cost more because of the battery. The final price is confirmed after a free site survey.
08.
What size solar power plant do I need for my home?
Check the units on your last few KSEB bills and divide the monthly average by about 117 (what 1 kW generates in a month in Kerala). A home using 350 units a month needs about 3 kW; 585 units needs 5 kW. Add about 2 kW if you plan to buy an electric car. Use the calculator on this page or book a free site survey for an exact size.
10.
Which is better: on-grid, off-grid or hybrid solar?
On-grid is the cheapest, pays back fastest and gets the subsidy, but it switches off during power cuts. Off-grid runs entirely on batteries and suits sites without a reliable grid. Hybrid combines net metering with a battery, so it saves money and keeps your home running through outages. Most Kerala homes with a stable supply choose on-grid; homes with frequent outages or an EV choose hybrid.
