Solar electricity stored in battery and can be utilized during night.

 DC power generated from SPV panel is converted to AC power using power conditioning unit and is fed to grid either of 33kV/11kV three phase lines or of 440/220V three/single phase line depending on capacity.

Power generated during day time utilized by powering captive loads and feed excess power to the grid.

Where solar power is not sufficient due to cloud cover etc, the captive loads are served by drawing power from the grid.

 There is a provision of Central Financial Assistance of 15% of the total cost or Rs. 12/watt or Rs. 1.20 crore/MWp under the Grid Connected Rooftop and Small Solar Plants Program of the Ministry. CFA has been reduced from 30% to 15%.

Other benefits, in terms of accelerated tax depreciation is 80% on total cost of project up to September 2016 then after it will be reduce to 40%.

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

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 BOI, Syndicate Bank, SBI, Dena Bank, Central Bank of India, PNB, Allahabad Bank, Indian Bank and Indian Overseas Bank have been given instructions to extend loan for Grid Interactive Rooftop Solar PV plants as home loan/home improvement loan.

 From 1kWp up to 500kWp or in combination can be set up on the roofs.

About 10sq.m area is required to set up 1kWp grid connected rooftop solar system.

• Electricity generation at the consumption center and hence saving in transmission and distribution losses
• Low gestation/development time.
• No requirement of additional land
• Improvement of tail-end grid voltage and reduction in system congestion with higher self-consumption of solar electricity
• Generation of local employment.

According to a study conducted by TERI, a potential of 124GWp SPV Rooftop plants has been estimated in the country.

For Grid connected rooftop system beneficiary pays the utility bill on net meter reading basis. Alternatively, individual meter can be installed to measure the export and import of power separately. The mechanism based on gross metering at mutually agreed tariff can also be adopted

When Government offers a tariff for purchase of the solar power generated from such plants, it is called Feed-In-Tariff.

 Net metering mechanism is more popular among states.

1. State should have conductive solar policy to allow the grid connectivity.
2. State Regulators have issued tariff order for appropriate tariff, net metering/feed-in tariff and grid connectivity

iii. The distribution companies agree to allow grid connectivity and purchase the electricity on feed-in-tariff or through net metering arrangement

3 to 4 years.

Sunlight on photovoltaic modules produces direct current (DC) electricity which is converted to alternating current (AC) by a device called an inverter, which is then wired into your main service panel where it feeds your internal power grid

10 year product warranty

25 year linear power output warranty

(Max. digression in performance of 0.7% p.a.)

See warranty conditions for further details.

It is always depending on per month electricity consumption in terms of units, Usually 1 kwp solar power plant generates avg. 4 units / day and 120 units / month. So far to calculate the appropriate plant size we should divide   Monthly Units Consumption / 120 Units = …………….Kwp

Unlike the early days of solar power when systems had to be sized for peak loads, a grid-connected PV system seamlessly switches to draw from the utility grid when needed. As such, Sunlight Electric uses an annual production target, averaging out sunnier days with cloudy days. Generation would be minimum.

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