Frequently Asked Questions
There are lots of reasons for using solar power plants to generate electricity however we would like to highlight the following:-
Photovoltaic (PV) is a method of generating electricity by converting solar radiation into direct current (DC). Solar photovoltaic power generation has long been seen as a clean sustainable energy technology which draws upon the planet’s most plentiful and widely distributed renewable energy source – the sun. The direct conversion of sunlight to electricity occurs without any moving parts or environmental emissions during operation. It is well proven, as photovoltaic systems have now been used for fifty years in specialized applications, and grid-connected systems have been in use for over twenty years.
A complete solar PV system consists of solar modules connected to an inverter that changes the PV’s direct current (DC) electricity to alternating current (AC) electricity to power your electrical devices and to be compatible with the electric utility grid. Batteries are sometimes included in a system to provide back-up power in case of utility power outages.
Size of solar power plants will depend on your annual consumption of electricity. The other criterion is that you will need shadow free rooftop space for setting up of Solar Power Plant. To setup 1kW of solar power plant we need approx 100 sq feet of space
As a thumb rule 1kW of photovoltaic will generate approx 1500 kWh per year.
The installed cost of a PV system will depend upon the roof type, the size of the system, the type of module used and how the system is mounted. See our page on Factors Affecting Output. The price of solar PV has gone down dramatically and we can offer Grid-tie Solar Power Plants from INR 70 per watt for Solar Power Plants.
Many of the states have started or planning to start net-metering for grid-tie solar power generation unit. This means that your solar power generation unit will be connected directly into grid (utility company) which will allow you to sell extra power generated by your system to electricity service provider. You will be spinning your meter backwards when your system is generating more power than you are consuming
Payback is immediate, if you were to pay cash for your system, at today’s rates, you will typically recover all your investments within the next 3-7 years, but as electricity rates go higher the time it will take to fully recoup your investment could easily be less than 5 years.
Our solar designers survey the site and suggest an optimal southern orientation with good exposure to the sun. They will also check structural support and space for solar panels to be placed.
The best location for a PV system is on a south facing roof, but an east or west facing roof might also work. Flat roofs provide an environment for a variety of solar modules. Locating the PV system on the ground can work with either a fixed mount or a tracking mount system.
If the space or the solar exposure for a PV system is limited, consider going to a system with a higher efficiency rating. They are more expensive but make more energy with less square footage of module space
PV system can produce power on cloudy days also however the modules will generate less electricity as PV system will received 80-90% less sun light on an overcast day
Solar electric systems are designed to withstand all weather conditions. Lightning, wind up to 120 km per hour, and extreme temperatures are all things your solar system can handle. However, these conditions will temporarily reduce its energy production.
Yes they work perfectly in winters. In fact, photovoltaic systems generate more power when the temperature is lower. Because of the shorter hours of daylight and lower angles of the sun in winter, PV modules do generate less energy than in summer.
If there is no available sunlight your solar-energy system will stop working – it simply becomes inactive and the power you use will be provided by the electric grid.
Solar panels are a quiet, non-polluting source of energy. Like all large electrical devices, PV systems generate electricity and should be treated with care and maintained with the assistance of a solar professional.
Usually only if the system is ‘Off-Grid’, batteries will be essential for the storage of electricity so you can use electrical equipment when there is no sunlight. Grid Connected PV systems don’t need batteries, however, you can have batteries with a grid connected installation if you wish to have power during power cuts, you need to determine this before the installation.
Most solar panels come with a 25 year power output guarantee and are expected to last at least twice that long. The power output guarantee on the solar panels is provided by the manufacturer of the panels and states that at the end of the 25th year, the solar panel will still produce a minimum of 80% of their original power output.
The best time to install solar was yesterday and will always be yesterday. Solar electricity is getting more and more expensive as the rebates and subsidies are dropping and panel prices are increasing. Fortunately electricity rates are also increasing at a faster rate than the price of solar
Once your solar-energy system is installed there is not any specific, regular maintenance that needs to be performed. It is helpful to wash the panels a few times a year to optimize your system. The panels can be washed with a standard garden hose, but it is important to note that cold water applied to hot panels could cause damage. It is best to wash the panels in the morning before they are exposed to the sun
Saving example: ROI 4 to 5 years
Unit generation per kilo watt annually - 1400 Approx.
System installed on rooftop - 10KW
Total generated unit of solar system - 1400x10 = 14000 Approx.
Saving Annually - 15000x6= Rs 90000.00 Annually
(Subsidy per KW of solar plant for 2018-19 is 20%-30% for domestic customer only)