Find out what size solar system (in kilowatts) is needed for your home, along with the costs and the complete application process..

Rooftop solar systems are rapidly becoming a preferred choice for people troubled by rising electricity bills. The government is also offering subsidies for installing solar panels under the 'PM Surya Ghar Muft Bijli Yojana'. However, the biggest question is which system—1kW, 2kW, or 3kW—is right for your home. Choosing the wrong capacity can result in either unmet needs or unnecessary extra expenditure. Therefore, it is crucial to understand your electricity consumption and household load before installing a solar system.

**Understanding On-Grid vs. Off-Grid Solar**
An on-grid solar system is directly connected to the electricity grid. It does not require a battery, and excess electricity is fed back into the grid via net metering. Government subsidies are also available for this type of system.

In contrast, an off-grid solar system includes battery backup. It is useful in areas prone to power outages, but it comes at a higher cost and does not qualify for subsidies.

**Who is the 1kW Solar System Suitable For?**
A 1kW system is a good option if your monthly electricity bill ranges between ₹1,000 and ₹1,500. It can power 3–4 LED bulbs, 2–3 fans, a TV, a laptop, and a small refrigerator. It generates approximately 4 to 5 units of electricity daily. A subsidy of up to ₹30,000 is available for this capacity.

**Why is the 2kW System the Most Popular?**
The 2kW solar system is the most preferred choice for middle-class families. It is considered ideal for households with monthly electricity bills ranging from ₹1,500 to ₹3,000. It can power appliances such as air coolers, water pumps, washing machines, and even a 1-ton inverter AC (with limited load). It generates 8 to 10 units of electricity daily. A subsidy of up to ₹60,000 is available for this system. Who should opt for a 3kW system?

A 3kW system is an ideal choice if your household regularly uses heavy appliances such as air conditioners, geysers, large refrigerators, and water pumps. It can generate between 12 and 15 units of electricity daily. A subsidy of up to ₹78,000 is available for systems with a capacity of 3kW or higher.

Simple application process

First, register on the PM Surya Ghar Yojana portal. Next, apply for the rooftop solar installation. Once approval is received from the DISCOM, the installation can be carried out by an authorized vendor. After the net meter is installed and the process is complete, the subsidy amount is credited directly to your bank account.

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