Such questions are a hot topic for domestic and foreign users, and of course they are a kind of expectation and vision for future power development.
With the maturity of photovoltaic power generation technology and the continuous improvement of battery performance and capacity, many companies have turned their attention to the new thing of “photovoltaic + energy storage†in recent years. We all know that the energy of photovoltaic power generation comes from solar energy. Solar energy is inexhaustible. Photovoltaic power generation systems that combine photovoltaic modules, inverters, brackets, and related system components can generate constant amounts of electrical energy every day. For most users, the peak period of household electricity consumption is mainly in the morning and evening, and these two time periods are the lowest time period of photovoltaic power generation. Under normal circumstances, photovoltaic power generation users often send photovoltaic power generation to the power grid during working hours. A certain amount of income, but such income is very cheap to sell without government subsidies. Therefore, in some regions of Europe and Australia, due to the low amount of subsidies for photovoltaic power generation, users have more choices of “photovoltaic + energy storageâ€, which has greatly increased the ratio of self-sufficiency, increased the user's income, and let users really go. The golden age of "do not want money."
The photovoltaic energy storage system consists of a photovoltaic grid-connected system, an energy storage inverter, a battery, and a load. For the average family, a 3kW photovoltaic energy storage system can fully meet the daily power consumption. When the photovoltaic system is strong in solar irradiance, it relies on solar energy to supply power to the load. If the photovoltaic power generation is not complete, the energy storage system can be used to store excess solar energy. At night or in rainy days, the household energy storage system will be used. Can power the user.
However, in the current market based on photovoltaic systems, energy storage inverters, and high battery prices, the domestic PV energy storage market is still in its infancy. Many users have ideas about such systems, but they still hesitate when faced with high prices. However, foreign countries are different. Australia, the United Kingdom and other countries with early PV market developments, as the subsidies for photovoltaic power generation have been shrinking year by year, the temptation to take revenue from the grid is not particularly obvious, and the policy of promoting users to install energy storage systems has begun to appear. This is also the main factor for the rapid development of the foreign energy storage market in recent years.
I went to Australia to participate in a photovoltaic exhibition year ago. During the exhibition, I was fortunate to communicate with a user who installed an energy storage system. When asked why the photovoltaic energy storage system was installed at a high cost, the user gave this One answer: because photovoltaic power generation can not only save a lot of electricity costs, but also make the environment better, and more important is the confidence of future PV energy storage.
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