FAQ 2017-08-29T19:43:54+00:00

Frequently Asked Questions

What is feed in tariff? 2017-08-29T19:21:51+00:00
Government offers to pay a tariff for purchase of the solar power generated by the solar plant
How much Rooftop area is required for Solar Rooftop? 2017-08-29T19:14:39+00:00
For Solar Rooftop, approximately 100Sqft of shade free area is needed for 1kVA Solar module
I already have a UPS based battery backup solution for my home. Can I use this along with solar? 2017-08-29T19:09:15+00:00
Yes, this back-up can run the household loads during a power-cut as usual. This system will work independently of the solar system.
What are the ideal cases when I should go for an on-grid system? 2017-08-29T19:05:19+00:00
On-grid systems without batteries can be considered for the following purposes:
  • To neutralize the electricity bill and generate free, clean energy for oneself.
  • To hedge against the increase in prices of electricity tariff
· To generate some income over a long period of time. Yes, the solar plant is an asset that generates revenue throughout its lifetime. On-grid system without batteries shouldn’t be considered at places where the power outages are quite high especially during day time. This system is not recommended for places where the reliability of power is the first choice
Is there a way that I can use the solar power during power-cuts? 2017-08-29T19:02:17+00:00
Solar power generated during power outages can be stored in batteries. These systems are called hybrid systems as they have battery storage facility as well as grid connection.
Why is that solar generation is stopped when there is a power cut, which is the time when solar is required more than ever? 2017-08-29T19:01:00+00:00
The reason behind this logic is that during a power cut, in case electricity personals are working on the grid lines, export of solar power can cause electric shock to the people working on it. So this is more of a safety issue that solar generation stops.
What is the disadvantage of the grid-connected system without batteries? 2017-08-29T18:55:01+00:00
The solar generation is stopped when there is a power-cut from the grid. The solar inverters have the inbuilt property called anti-islanding which makes sure that the moment there is a power outage at the grid, it will stop the solar generation.
How do I know that I am eligible for grid connection? 2017-08-29T18:40:30+00:00
Depending on the state level policy prevailing in your state for roof-top solar, the requirements for putting up a solar power plant can vary. In general, these are the few basic requirements for applying for a roof-top solar system:
  • You should be the owner of the building where you intend to put solar.
· You should be the consumer of the local ESCOM(Energy Supply COMpany), the energy meter should be in your name.
What are the advantages of grid connection compared to no-grid connection? 2017-08-29T18:11:02+00:00
Grid connection can eliminate the requirement of batteries in a solar roof-top system which can give a longer life for the system without replacement of its parts. Apart from this the following benefits are also there compared to an off-grid battery based system:
  • Lower system cost as lower accessories are required.
· The inverter efficiencies are better in a battery-less system which reduces the energy losses.
What are the different options available for me to go on-grid or grid connected? 2017-08-29T18:09:32+00:00
Depending on the state level policy, there are two different options for going grid connected/on-grid/hybrid:
  • Net metering: The metering system where the power generated is first consumed by the loads in the building. Only excess is exported to the grid. In net metering, the bill is calculated as a difference of  total export & total import
  • Gross Metering: The metering system where the whole power is exported to the grid. Generally in gross metering output of a solar inverter is directly connected to the grid and not to the loads first.
For example, in Karnataka, for residential buildings, the choice for grid connection is through net metering
What are the functions of an On-Grid inverter? 2017-08-29T18:05:22+00:00
An On-Grid inverter performs the following major functions:
  • Convert the DC Power from solar panels to AC Power.
  • Synchronize this AC power with the voltage & frequency of the grid power.
  • Maximize the output from the solar panels(via a feature called MPPT).
What do you mean by ‘load’? 2017-08-29T18:03:50+00:00
Loads are nothing but the energy consuming electrical appliances. Light, fan, refrigerator, motor are some of the examples.
How is that a Solar PV System is connected to grid or grid-tied? 2017-08-29T18:01:23+00:00
The Solar On-Grid PV System is connected to the grid via the Solar inverter. In terms of physical connection, the solar inverter (or grid-tied inverter/On-grid inverter) is connected to the distribution board of a building just like how a bad (equipment) point is connected.
What is Grid? 2017-08-29T17:59:38+00:00
The grid is electricity connection that a building has. In general, grid refers to the ESCOM (Energy Supply COMpany)
What is an On-Grid System? 2017-08-29T17:54:02+00:00
A Solar PV (Photo Voltaic) system which is connected to the grid where the system can potentially send power back to the grid as well. These systems are also called grid-tied system

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