Photovoltaic power generation, also known as solar power generation, is a technology that uses light energy to directly convert into electrical energy. It is based on the photovoltaic effect in solar panels, which converts light energy into electrical energy. Solar roof tiles, by the organic combination of solar power generation components and traditional roof building materials, have been unanimously recognized by the market for their product features of integrating power generation function and roof decoration.
Solar roof tiles need to continuously receive sunlight to produce electricity. Therefore, Solar roof tiles can only continuously generate electricity when there is sufficient sunlight during the day. At night or on cloudy days, Solar roof tiles cannot receive enough sunlight, and power generation will be reduced or stopped. So how to solve the problem of electricity consumption at this time?
Faced with this problem, there are currently two practical solutions:
Installation of solar energy storage systems, solar roof tiles usually on sunny days or during the day when there is enough light will produce enough electricity, we will be part of the excess power with a battery to store up, and then wait until the evening to release it to use it, basically can realize self-sufficiency.
Energy storage systems can store energy during peak energy demand periods and release energy during low demand periods to balance the difference between energy supply and demand and increase renewable energy utilization. However, there are also some disadvantages. Firstly, the cost of energy storage equipment is relatively high, especially for large-scale energy storage systems, which require a large amount of investment. Secondly, the service life of energy storage equipment is limited, especially for battery packs, whose cycle life and capacity fading will gradually decrease as the use time increases. This means that energy storage equipment needs to be replaced or maintained regularly, and that some energy storage technologies may cause environmental pollution or impact on ecosystems.
The grid-connected system is a power system that connects the photovoltaic power generation system to the grid. During the day, when photovoltaic systems produce more electricity than demand, the excess energy is injected into the grid. This process is often referred to as "grid generation." This can effectively utilize the electric energy generated by the photovoltaic power generation system and reduce energy waste. At night or on cloudy days, when the photovoltaic power generation system cannot meet the power demand, the system will automatically obtain power from the power grid to ensure the stability of power supply.
However, grid-connected systems also present some challenges and limitations. For example, in some areas, the grid may not be able to accommodate the large amounts of electricity injected by distributed photovoltaic power generation systems, requiring grid upgrades. In addition, the stability and security of the power grid also need to be guaranteed to prevent problems such as power backflow. By purchasing batteries, you can also earn additional electricity subsidy, which can be considered as a photovoltaic power generation solution for ordinary households.
