1. Enhance power supply reliability.
Like hospitals, precision production lines, data centers, these situations with high power reliability requirements, power failure or encountered typhoons and other accidents, energy storage can reserve energy supply to end-users, to avoid the fault repair process of power interruption to ensure that the important loads continue to supply power.
2. Peak and valley tariff arbitrage.
Photovoltaic users to set up additional energy storage capacity, the most direct way to realize the value of peak and valley tariff arbitrage. Users can be in the load valley, with cheaper valley tariffs on their own storage battery charging, in the peak load, will be part or all of the load from their own storage battery power supply. The profit can be estimated as the sum of the peak tariff minus the valley tariff and the cost of energy storage. The size of the profit depends on the difference between peak and valley tariffs and the size of the battery cost. 3.
3. Ensure the stability of grid operation.
In the past two years, the rapid growth of installed capacity of photovoltaic, photovoltaic power generation without storage penetration rate increases, will inevitably affect the stability of the grid. If the photovoltaic power generation is too large, will inevitably be formed in the grid local tide backward phenomenon, which will increase the difficulty of grid scheduling, affecting the safety of grid operation. User-side installation of energy storage batteries, can form a buffer layer in the low-voltage side, absorbing part of the PV power is too large, to facilitate the scheduling department to control the trend, to ensure the stability of grid operation.