FAQ :-


If I invest in a Solar Rooftop Setup, in how much time will I get my money back?

Usually in a Solar Rooftop System, the major investment is its installation cost. Depending upon its type i.e. either it is a residential plant or has been installed at commercial premises. The solar power plant has an amazing value proposition for the costumers in monetary terms as well as space utilization. The solar rooftop system has a minimal maintenance cost and no fuel cost. For example A 5 KW Solar PV System has an average pay back period of approximately 3 to 4 years. With the life span of a PV System as high as 25 to 30 years 70% to 75% power produced by it may be considered as the free electricity.

Is it required by consumer to change the electrical meter already installed in his premises?

yes in case beneficiary goes for a net metered Solar system, Bidirectional meter will have to be installed .This appropriate meter shall be procured, installed and maintained by the Distribution Company at the cost of the consumer.

How the consumer will be compensated for excess electricity injected in Grid by the Rooftop solar PV system installed?

In case electricity injected in the Grid exceeds the electricity consumed by the consumer in the billing period (monthly or bi monthly electricity bill ), excess injected units shall be remunerated monetarily directly into the consumer’s bank account. For this an APCC rate has been fixed by the nodal agency which in Gujarat is Rs. 3.25 per unit.

What is Net metering Mechanism?

The grid connected rooftop system can work on net metering basis wherein the beneficiary pays to
the utility on net meter reading basis only. Two meters shall be installed to measure the export and
import of power separately.

What is subsidy available on installation of Grid connected Solar Rooftop Power Plants?

provision of Central Financial Assistance of 30% of the total cost of Solar Rooftop Power Plant. This
CFA is available only for following categories

1. All types of residential buildings

2. Institutional: School health institutions including medical colleges & hospitals, universities, educational institutions etc.[including those registered under the Societies Registration Act 1860 and the Indian Trust Act 1882].

3. Social Sector Community centres, Welfare homes, old age homes, orphanages, common service centres, common workshops for artisans or craftsman, facilities for use of community. Trusts/ NGO voluntary organization /training institutions, any other establishments for common public use etc. [including those registered under the Societies Registration Act under the societies Registration act 1860 and the Indian Trust Act 1882.1

NO CFA is available for any commercial or industrial establishment

For this category Accelerated Depreciation is available as per I.T. Act. Companies can use this to substantially reduce tax burden in the first few years of the project, up to 100% of the project cost (80% accelerated depreciation and 20% additional depreciation) and can eventually reduce the ROI period.

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

About 100sq.Ft area is required to set up 1 KWp grid connected rooftop solar system.

What is the size of grid connected rooftop solar system?

The rooftop solar systems from 1 kWp up to 1000 kWp or in combination can be set up. However as per the Rooftop Solar PV Regulations 2015, the maximum peak capacity of the grid connected rooftop Solar PV system to be installed shall not exceed 100 % of the sanctioned load/contracted Demand of the consumer. Also the capacity of Solar Rooftop shall not exceed 25 % of capacity of the distribution Transformer or any other Transformer from which power is fed to the consumer.

What is the average cost of grid connected rooftop solar systems?

The cost of Grid connected rooftop solar PV systems is Rs. 69000 per KW.

If I install a Solar PV System at my place, how much working Life Span can I expect from it?

Solar PV System is a static system i.e. it does not consists of any rotating or moving parts. So it is not prone to any kind of damage caused due to the friction between the moving parts or any other mechanical phenomenon that causes damage to a generator or a motor. A Solar PV System can easily last from 25 to 30 years and can even work for a longer period if maintained properly.

How many types of Rooftop Solar PV systems are there?

There are two types of Rooftop Power Plants:
(i) Off-Grid Systems with storage facility using battery.
(ii)Grid Connected Solar Rooftop PV System (On-Grid System).

What is a Solar Rooftop System?

In a solar rooftop system, the solar panels are installed on the roof of any building like residential, commercial, institutional and industrial buildings.