Since the invention of solar energy for the generation of electricity with the help of Photovoltaic cells, there has been growing demands for further development of solar PV technology. Solar PV technology has only gotten better with improved efficiency, flexibility, and quality. During the last decade, there is a phenomenal increase in the capacity of this technology witnessed by developed countries like USA and China. India too is not far behind in adopting this technology and developing a user-friendly environment to fodder the need for a renewable source of energy. Haryana is among the upcoming states promoting solar energy with user-friendly policies to become self reliant when it comes to its energy demands. Solar energy in Haryana has seen exponential growth with an installed capacity of 73.73 MW till 2018. Solar companies in Gurgaon have been providing great solutions to the growing demands for commercial as well as residential buildings energy needs.
Type of Solar Panels
The variety of solar panels available nowadays finds its application based on efficiency, cost, and flexibility. Solar PV technology generates electricity because an element called Silicon, a semiconductor which produces an electric current when they absorb sunlight. This technology needs a purified form of silicon for the best efficiency and the purification process of the crystalline silicon factors the cost this technology. Different types of solar panels based on their cost-effectiveness, efficiency and durability are enumerated below
• Monocrystalline Panels
Monocrystalline solar panels are basically built over a single crystal structure. Since the crystals are oval shaped, panels are cut into varied patterns to provide a distinctive appearance. Silicon cells which are sliced to form a crystal structure expose the missing corner when place together and form a grid-like structure on the panel. The crystal framework of monocrystalline panels is distributed evenly that makes look steady blue colour without any presence of grains resulting in the purest form of silicon crystal with highest efficiency levels.
Monocrystalline panels are the costliest among all panels because of the manufacturing process where a single silicon crystal forms a silicon cell. The process called Czochralski is energy intensive and during the process may result in wasted silicons which can be further utilized for making polycrystalline panels.
Monocrystalline panels are highly efficient with high power capacity. It can reach efficiencies higher than 20 percent and can develop higher power not only because of its efficiency but because it comes with higher wattage modules ranging from 300 watts to as higher than 350 watts. Monocrystalline panels come with a variant of 60, 72 and 96 cells and are capable of producing more electricity compare to similar variants of other panels.
Firms like Adani, Emvee Photovoltaics, Moser Baer, Goldi Green Technologies Ltd., Jain Irrigation systems, and RenewSys are the major manufacturers of monocrystalline panels in India. Looking at the Solar power plant installation in Gurgaon has immense opportunities for the well established companies to expand their business and opening new avenues for their growth. Post implementation of welcoming policies wrt solar energy in Haryana, solar companies in Faridabad as well are eyeing for the expansion and providing solutions towards setting up of solar systems for commercial as well as residential based installations.
• Polycrystalline Panels
Monocrystalline and polycrystalline panels are made of silicon cells. They differ from each other with the composition of silicon. A single silicon structure is cut to form monocrystalline cells, whereas fragments of silicon crystals are melted together in a mould before it is cut to form a cell wafer. Due to this, polycrystalline panels form a grainy appearance with a gemstone like patterns showing the prominence of boundaries in the crystal.
Polycrystalline panels are cheaper compared to monocrystalline panels because of the fragments of silicon crystal being used for making cells rather than one single pure crystal. It allows for a simpler manufacturing process to be adopted for building polycrystalline panels by the manufacturers.
Polycrystalline panels have basically efficiencies ranging from 15 to 17 percent. It comes with a lower range of wattage compared to monocrystalline panels and therefor generates lesser power. These types of panels also come with a variant of 60, 72 and 96 cells but have a lower capacity of producing electricity comparatively.
Adani Solar, Apollo Solar Power, Cenergy Maxpower and BlueBird Solar are some of the firms who manufacture polycrystalline panels. With the development of setting up solar power plants in Gurgaon, more and more people are looking forward to investing in this cleaner energy.
• Perc Panels
PERC stands for Passivated Emitter and Rear Cell or Passivated Emitter and Rear Contact. It is basically solar panels formed of cells which can convert the absorbed sunlight into electricity quite easily. PERC solar cells enhance the efficiency by addition of layer to the back of the conventional solar cell. It can perform better with the low light as well as at the higher temperatures.
PERC solar cells are preferred because of the efficiency improvement over standard solar cells. In addition to that, adopting PERC manufacturing doesn’t ask for modifications to existing cell manufacturing processes. It results in a comfortable shift of manufacturing process from standard cells for manufacturers at a lower cost.
The challenge being faced by manufacturers while adopting this technology is to scale it up and control the processes simultaneously to avoid the increase in cost.
Adani Solar, Evolve Energy Group, Lubi Solar and RenewSys are some of the major companies manufacturing PERC panels in India. Solar system for homes in Gurgaon has been ever expanding than before leading to more and more energy efficient buildings. Of all the sources of energy available on this earth, solar in Gurgaon is considered to be the future source of energy and is going to transform this city as ‘Solar city’ of Hrayana
Bifacial solar panels are typically manufactured with monocrystalline solar cells and polycrystalline solar cells as well. This kind of panel can absorb sunlight from both the front and back side of the panel resulting in the generation of more electricity than the panels of similar sized conventional solar panels. It has a transparent back sheet which allows the sunlight to pass through the panel and reflect it back from the ground to the solar cells on the back side of the panel thus increasing the efficiency of solar cells by producing more power.
Adani Solar, RenewSys, Topsun Solar and Super Sun Solar are some of the companies manufacturing Bifacial Panels in India.
Share of Companies in Solar Power Generation
The Pie Chart depicting the share of power capacity commissioned in India by the firms in the Solar Energy field indicates the future of Solar Energy booming to a newer height thus making our country more energy efficient and thus providing a cleaner environment to the future generation. Cost of a solar plant in Gurgaon for a typical 1kW off-grid PhotoVoltaic system is approximately EIghty Thousand rupees. The price of a solar power plant in Gurugram with a capacity of 1 MW electricity generation is about 4 crores with operation and maintenance cost of 8 lacs/ year.