There are three types of solar power plants. They are Grid-tied (On-grid), off-grid and hybrid solar power systems.
On-grid (grid-tied) Solar Power Plant
An on-grid (grid-tied) solar power plant is connected to the local electricity grid. This means that when the solar panels generate electricity, any excess power can be fed back into the grid and sold to the utility company, usually at a set rate through a feed-in tariff. The system is designed to work in conjunction with the grid, so if there is not enough solar energy being produced, the grid can supply the remaining power needed. On-grid solar power plants are typically more cost-effective as they do not require the use of batteries for energy storage.
On the other hand, an off-grid solar power plant, also known as a stand-alone system, is not connected to the electricity grid. These systems rely on battery storage to store excess energy generated by the solar panels during the day, which can then be used at night or during periods of low sunlight. Because the system is not connected to the grid, it must be designed to meet all the electricity needs of the property it serves, which can make it more expensive to install than an on-grid system.
Off-grid Solar Power Plant
Off-grid solar power plants are typically used in remote areas or locations where connecting to the grid is not feasible, such as in rural communities or on boats and RVs. They are also used in emergencies, such as natural disasters or power outages, to provide backup power.
The hybrid type of solar power system combines the main characteristics of the other two systems. It has a battery backup and is connected to the grid.
All three types of solar power plants are effective ways to generate clean and renewable energy from the sun. The choice between these depends on factors such as location, electricity needs, and cost considerations.