A rooftop solar power system uses solar energy to generate electricity, which reduces electricity bill. There are various models in the market and generally, it is very difficult to choose the correct model.
Solar panel installation cost is the first factor that homeowners should consider while comparing the various models. Sizes of the panel (in watts and physical), brand, quality, warranty period are few other factors that help homeowners to decide on the model.
Homeowners could ask for residential solar systems quotes, from two or three companies. Along with price, the certificates the company possess and the feedback of other customers should play a great role in choosing the company for solar system installation. The other factors to be considered are
· Quality: Various companies make panels that differ in quality, price and efficiency. It is always better to check the company reviews for knowing more about the company.
· Energy efficiency: The more energy efficient is the panel, it is better for homeowners.
· Temperature coefficient: Solar panel heating fastens the ageing process of the panel. Lower the percentage per degree celsius, the better.
· Durability: If the manufacturer does not offer a long warranty period (25 years minimum) then the durability of the product can be suspected.
· Size: A solar panel that is big enough to power all the electrical appliances of the house should be chosen for installation.
Using these factors, a homeowner can single out the best model for them.
