Solar energy, which hits the surface of the Earth, has a colossal power – solar radiation for a week surpasses all the currently known world reserves of fossil oil, uranium and coal combined. Solar panels (photovoltaic modules) convert the energy of solar radiation into alternating current, which is then fed to the power grid. Grid (that is, connecting to tte grid, on-grid) solar photovoltaic systems can be used both to generate environmentally friendly electricity for the purpose of further sale to the grid at a green tariff, and to generate electricity for own consumption.
On-grid solar power plants are one of the most common types of photovoltaic systems designed to generate electricity with its subsequent transfer to the external grid. Most often, the electricity generated by a grid-on solar power plant is sold to a third-party buyer, for example, by a “green” tariff, a market price or a price set in a special “green” auction. On-grid solar power plants are divided by their design into ground, rooftop and facade. They can use either a fixed placement of solar panels, or use moving support structures that allow the surface of the solar panels to be oriented in the most optimal direction in relation to the sun. On-grid solar power plants can also be divided into large industrial (average power up to 1 MW and more powerful – from 1 MW) and smaller private (usually their capacity does not exceed several tens of kilowatts).
On-grid photovoltaic power system consists of the following components: