Most people ask this question when they consider installing a Rooftop Photo Voltaic Power Generation System. There are many reasons for a site assessment to be a prerequisite. Here are five of the most important ones:
No two roofs are the same!
Absolutely! There are some physical differences between roofs, even if they share the same construction. The first thing to consider is the surrounding area of the roof/house.
Solar power is the leading source of renewable energy in India, thanks to the commitments made at the Paris Conference. Solar power companies are focusing on the Indian rooftop and commercial solar markets. Indian solar energy companies have also entered the fray. They offer solar panels at attractive prices, and they install solar systems in accordance with government guidelines.
The number of trees and their height around the property will vary.
Parapet height
The orientation of your house (which way your roof faces).
Water tanks are located in certain areas.
Staircase lobby, etc.
Space: the Final Frontier!
The shape and dimensions of the roof determine the size of a rooftop solar power system. A mix of real estate and technology determines the placement of solar panels. Ceilings are often irregularly shaped, and the space that can be used is limited by this.
Measurement is the key!
Solar Power Generation Systems are similar to a custom-made suit. In the case of rooftop SPGS systems, it is the art of measuring that determines the performance of the system. A number of measurements are needed. While panels and layout of arrays are the most obvious ones, the other important ones are the distance of the distribution board, the location of the energy meter, determining/earmarking where the grid tie inverter or the power conditioning unit, the earthing pits, the lightning arrestor, etc. The location of the earthing holes, lightning arrestors, etc. All of these factors determine the lengths of cable runs and accessories. These measurements also determine the price of the solution.
Forces of nature!
An SPGS installation involves some civil engineering. The height of your roof and the method of construction are important factors in determining the type of structure that will be installed on the top. The type of roof, thermal insulation, and other factors will determine the solution. The chosen design will be simple ground mounted if there are no obstructions and plenty of space on the roof. Otherwise, an elevated form is required. The profile of the top determines the strength, gauge, and material of the system. Aluminum structures are recommended if you live near the coast. The system should be strong enough for the high wind speeds in your area. A site survey is used to design a system that will withstand the vagaries and times of nature.
How much energy do you need?
The photovoltaic rooftop power system will be designed for your home. It is, therefore, important to know the type of load (household equipment) that will be connected and their typical usage patterns. The availability of electricity is another factor that will determine the kind of solution. The timing, frequency, and length of power outages within your area. It is important to optimize the size of your SPGS system to meet your power consumption during utility power availability (in off-grid systems, when it’s not). The main purpose is to reduce or eliminate your electricity bill.