We at Heron Solaris do not merely sell Solar Panels or a Solar Power Plant. We provide clean energy solutions. Below set of FAQs should explain how we design these custom "Solutions".
Why Rooftop Solar?
Sunlight is an abundantly available natural resource, and will continue to remain so for years to come. Harnessing the energy of the Sun helps us in building a sustainable planet and reduces the CO2 emissions produced otherwise while generating electricity. The way we generate our energy is undergoing a massive transformation, wherein we are moving more and more towards distributed energy generation. By having our own power plant on our roofs, we are reducing the miscellaneous charges which come associated with transmission and distribution of power.
Rapid technological innovations coupled with sustained increase in production has resulted in solar systems becoming an affordable and reliable means of power generation. Moreover, the following schemes have been launched by the government to encourage people to install rooftop solar systems:
Net Metering Scheme
Subsidy for Residential Projects
Feed In tariff in particular states
Basics of Solar?
For a 100 KW plant you require ~ 10,000 sq ft of shadow free space
A 100 KW of solar can generate ~ 1.5 lac units of electricity per year
Reduction by ~ 150 tonnes of carbon every year
What are the different types of Rooftop Solar Systems? Do all of them need battery backups?
There are mainly three types of Rooftop Solar Systems:
a) On- Grid System: This system is connected to the Grid and does not require a battery. Your existing Energy Meter (also referred to as a Gross Meter) installed by your electricity provider or DISCOM (BSES/NDPL/etc.) is going to be replaced by a "Net Meter". Power generated by the Solar Power Plant will be consumed in your house hold (or commercial establishment) and any surplus produced will flow back to the Grid. Surplus Electricity Units generated which are not consumed by you and flow back to the Grid are netted of by your DISCO MS (BSES or NDPL).
b) Off- Grid System: This system is not connected to the grid and may require a battery backup.
c) Hybrid System: This kind of system is a combination of the above two systems.
Depending upon the capacity of the system installed, the monthly electricity bill will be heavily reduced or be negligible.
Installing the plant will damage my roof as the plant may require chipping, drilling or puncturing the roof. I also have additional water proof and Brick Coba protection. I do not want that to be removed or damaged.
Heron Solaris believes that no two houses or establishments are the same. Each requires its own design and attention to detail. We work with various structure vendors and can provide a solution for all your requirements. All structures do not involve chipping on the roof. Based upon your requirement, a structure can be designed to avoid chipping, drilling or puncturing. In case, there is a need to chip the roof, we have experts who will ensure that water proofing remains intact.
I want to use my roof for parties. Or, I want to build a swimming pool on my roof. How can I install a solar plant on my roof and still use it for my personal use?
Solar Panels can be installed over elevated structures in order to ensure that no area on the roof is unusable. Existing areas on the roof utilized for water tanks, AC units, etc may be targeted to install the solar plants. We can build a super structure to hold the solar panels. This super structure will cover the area to protect it from dust particles and birds.
How much will I save? And how much area do I need?
While the rule of thumb states that a 1 KW Solar Power Plant can be installed in an area of 100 sq ft, the same can also be installed over a lesser area with more efficient panels. Below is an estimation of the number of units generated from a solar plant in a year.
Area (Sq ft)
Generation per year (kwhr Units)*
Savings per year (INR) **
* Generation is dependent on location, orientation of panels, cleaning of panels etc
** Assuming electricity tariff of INR 9/ unit.
What kind of maintenance is required for the Solar Power Plant?
Generation from solar panels is highly dependent on the solar irradation and on cleaniness of the panels, amongst other factors. To ensure an efficient power generation you need to keep the Solar Panels clean. This can be done by cleaning with water or removing any settled dust with a piece of cloth. Further, we provide a IoT system with every system, through which one can monitor the performance of the power plant. Further, (i) Solar Panels have a 25-year performance warranty provided by the manufacturer and (ii) inverters have a 5-year warranty provided by the manufacturer.
What are the incentives provided by the Government of India? What is my return on investment?
Government of India has introduced various schemes to increase adoption of Rooftop Solar Power Systems as listed below:
a) Subsidy: As per recent GoI notification subsidy is only applicable for Domestic consumers with a maximum capacity of 10 kW. However, the same may vary from state to state.
b) Accelerated Depreciation: Commercial establishments can claim an accelerated depreciation of 40% on solar assets.
c) Net Metering: Depending on your usage, your electricity bills will report credit for the surplus electricity flown back to the grid.
The average payback for a solar plant is 3-4 years. The Return on Investment averages at 20% over a period of 25 years and can also go as high as 30%. For reference, a Fixed Deposit in a bank gives a return on investment at 6% for a period of 1 year.