Rooftop solar panels rely on the ability of the solar cells to harness the energy of the sun and convert it to electricity. It is a small, square-shaped semiconductor that is made from conductive materials such as silicon. When sunlight strikes the solar cells, it induces chemical reactions that release the electrons, thus generating electric current.
Rooftop solar power plant system can be installed in any of the following ways:
This is most commonly used photo-voltaic installation used to provide localized electricity in absence of conventional source of electric power at certain location. As the name prefers this system does not keep any direct or indirect connection with any grid type network.
In standalone system the solar modules produce electric energy which is utilized to charge a storage battery and this battery delivers electricity to the connected load. Standalone systems are normally small system with less than 1 kilo watt generation capacity.
These systems are self-sustaining and can provide power for critical loads in areas where a power grid is not available. However, these systems require specialized equipment to function and can be costly to install. These are ideal for businesses which can sustain for a short period of time with no electricity.
On-grid solar power systems generate power using a solar power system and are directly connected to the utility power grid. These systems send excess power generated by the solar power system to the utility grid and consumers get compensated for the extra power fed back. These systems work in collaboration with the power grid. In the case when there is not enough sunlight to meet your business’ needs, the system runs on the power supplied by the grid. These systems are best suitable when your power consumption is high.
These systems can be installed without a net metering. But, being connected to the main grid, this system does not produce electricity during power outages. Businesses can rely on on-grid solar systems to meet their daily requirements, as well as earn income from the excess power generated.
Hybrid solar systems combines the best from on-grid and off-grid solar systems. These systems can either be described as off-grid solar with utility backup power, or grid-tied solar with extra battery storage.