Frequently Asked Questions for Grid Connected Solar Rooftop Systems

What is a Solar Rooftop System?

In a solar rooftop system, the solar panels are installed in the roof of any residential, commercial, institutional and industrial buildings. This can be of two types (i) Solar Rooftop System with storage facility using battery, and (ii) Grid Connected Solar Rooftop System.

What is a Solar Rooftop System with Storage facility?

Such rooftop system has battery as storage facility. The solar electricity is stored in the battery and can be utilized during night also when the sun is not available.

What is a Grid Connected Solar Rooftop System?

In grid connected rooftop or small SPV system, the DC power generated from SPV panel is converted to AC power using power conditioning unit and is fed to the grid either of 33 kV/11 kV three phase lines or of 440/220 Volt three/single phase line depending on the capacity of the system installed at institution/commercial establishment or residential complex and the regulatory framework specified for respective States. These systems generate power during the day time which is utilized fully by powering captive loads and feed excess power to the grid as long as grid is available. In case, where solar power is not sufficient due to cloud cover etc., the captive loads are served by drawing power from the grid.

Where such plants can be installed?

Such rooftop systems can be installed at the roofs of residential and commercial complex, housing societies, community centers, government organizations, private institutions etc.

What is the Subsidy provided by the Government?

There is a provision of 30% central subsidy/incentive of the total cost under the Grid Connected Rooftop which is applicable for Residential, Institutional, Social, Government/PSU sectors.

What are the other fiscal incentives are available for Solar Rooftop Systems?

There are provisions of concessional import duty/excise duty exemption, accelerated depreciation and tax holiday for setting up of grid connected rooftop power plants.

What efforts Government is making to providing loans for solar rooftop systems?

Department of Financial services has instructed to all Public Sector Banks to encourage home loan/ home improvement loan seekers to install rooftop solar PV plants and include cost of system in their home loan proposals. So far, nine PSBs namely Bank of India, Syndicate Bank, State Bank of India, Dena Bank , Central Bank of India, Punjab National Bank, Allahabad Bank, Indian Bank and Indian Overseas Bank have given instructions to extend loan for Grid Interactive Rooftop Solar PV Plants as home loan/ home improvement loan.

What is the size of grid connected rooftop solar system?

The rooftop solar systems from 1 kWp upto 500 kWp or in combination can be set up on the roofs.

How much roof area is required to set up the grid connected rooftop solar system?

About 9 sq. m (90 sq. feet) area is required to set up 1 kWp grid connected rooftop solar system.

What are the advantages of Grid-Connected Rooftop Solar System?

  • Electricity generation at the consumption center and hence Savings in transmission and distribution losses
  • Low gestation time
  • No requirement of additional land
  • Improvement of tail-end grid voltages and reduction in system congestion with higher self-consumption of solar electricity

When should we opt for off-grid system?

If there is no electricity connection & we are sure that atleast for the next 5 years there shall no electricity connection given by government.

Why Electra Solar?

  • We provide tailor made solutions for the customer.
  • Believe in long term associations not only with our customers but also our vendors & our in house team.
  • Believe in long term associations not only with our customers but also our vendors & our in house team.
  • On customized requirements we believe in going an extra mile to comfort the customer like providing loaning options, customized 3-D design options to name a few.