At the just concluded SNEC International Photovoltaic Exhibition, numerous companies showcased their innovative integrated photovoltaic storage solutions, further confirming the public opinion that "energy storage is not cross-border, and photovoltaic storage is not separated".
Integration of light and storage, a new path for future development
Through in-depth study and organization of relevant documents, the five core functions of the new energy storage technology have been summarized: firstly, to promote the effective consumption of new energy; Secondly, alleviate the operational pressure on the power grid; Thirdly, optimize the allocation of resources; Fourthly, ensure the stability and reliability of power supply; Fifth, reduce energy loss and improve energy utilization efficiency.
Furthermore, each of the five core roles of new energy storage technologies has hit the key point in the current field of new energy. Among them, consumption and grid carrying capacity are the first bottlenecks in the development of distributed new energy represented by distributed photovoltaics.
Mismatch of supply and demand, distributed photovoltaic power not taking care of itself
Photovoltaic power generation itself has the characteristics of volatility, intermittency, and randomness. By further observing the peak and valley periods of urban electricity demand, we found that photovoltaic power generation reaches its peak at noon, which is precisely when electricity demand is low. However, as night fell and consumer demand surged, photovoltaic power generation had already ceased with sunset. Meanwhile, this mismatch also poses a threat to the safety of the power grid. In order to ensure the stable operation of the power system, grid operators have to adopt a "one size fits all" strategy, cutting off the connection with distributed photovoltaics, which undoubtedly poses further limitations on the development of photovoltaics.
So, how can we handle this Taiji like game with ease? If photovoltaic power generation is compared to the fierce side, then the new energy storage technology is the flexible side. Only by combining strength and flexibility can one advance and retreat freely in this game.
Economic winner, industrial and commercial photovoltaic distribution and storage
Defining the new energy storage as "flexible" appropriately reflects its unique function of flexible regulation. This energy storage system can intelligently adjust charging and discharging strategies based on the needs of the power grid and its real-time status, and interact with the power grid in both directions. This technology endows the new energy storage system with the ability to actively change the power drawn from the grid, achieving flexible load regulation and providing strong support for the stable operation of the grid. From this, it can be seen that new energy storage is a special remedy for solving the two major development constraints of distributed photovoltaics (consumption and grid carrying) mentioned above.
Among them, the industrial and commercial distributed photovoltaic distribution and storage mode is significantly different from the centralized generation side distribution and storage, grid side distribution and storage, and even the simple power consumption side distribution and storage. Because industrial and commercial photovoltaics serve as both the power generation side and the power consumption side, this dual identity gives them more flexible and convenient adjustment advantages in distribution and storage. This advantage will ultimately be reflected in its economic value!
When it comes to economic benefits, in addition to optimizing resource allocation and improving photovoltaic utilization, industrial and commercial photovoltaic storage can also reduce electricity costs; It is also possible to achieve the effect of increasing distribution capacity through energy storage systems when the original distribution capacity is insufficient, thereby reducing investment in transformers and related operating costs.