After installing photovoltaic systems, you still have to pay electricity bills. Installing photovoltaic power generation equipment on the roof will reduce the electricity bill, but it does not mean that there is no need to pay the electricity bill at all.
Most of them use grid-connected photovoltaic systems, which can be used immediately and the remaining energy is connected to the Internet. However, the photovoltaic system relies on solar energy to produce electricity during the day. In rainy weather or at night, when the photovoltaic system does not produce electricity or generates little electricity, it still needs electricity. .electricity. Another possibility is that the energy generated by the photovoltaic system is not sufficient and, in this case, the energy supplied by the network must also be used. Since you use electricitynetwork, you naturally have to pay your electricity bills.
The principle of photovoltaic power generation is to use solar panels to convert sunlight into electrical energy, then convert direct current to alternating current through an inverter, and finally transmit the electrical energy to the home electrical system via the power supply. distribution system. Therefore, if the electricity produced by the photovoltaic power generation system exceeds the electricity needed for household electricity, the excess can be sold to the power grid company to obtain a certain income. However, if the electric energy generated by the photovoltaic power generation system is not sufficient to meet the electricity needs of households, the insufficient electric energy still needs to be purchased from the power grid company and the bill electricity must be paidee. In addition, installing a photovoltaic power generation system requires a certain cost, including the purchase and installation of solar panels, inverters, power distribution systems and other equipment. Although the State implements certain subsidy policies, it must nevertheless bear certain costs. Therefore, installing a photovoltaic power generation system can reduce household electricity bills, but it is not completely free.
In summary, of course, if the energy generated by the photovoltaic system is relatively large, greater than the power of your own house, and the excess electricity is sold for money , then the money earned can also be used to offset the electricity bill.
Legal basis:
"Renewable Energy Law of the People's Republic of China"
Article 13
The State encourages and supports therenewable energy sources Energy is connected to the grid to produce electricity. For the construction of power generation projects connected to the renewable energy grid that require administrative authorization, if multiple persons apply for the same project license, the license holder will be determined by competitive bidding in accordance with the law.