Users can meet their internal electricity needs by configuring industrial and commercial energy storage, using the difference in peak and valley electricity prices to arbitrage and reduce operating costs. Energy storage can also serve as a backup power source to cope with sudden power outages; If photovoltaic is configured, it can also achieve maximum spontaneous self use of photovoltaic power generation, effectively improving the consumption rate of clean energy.

1. Improve the consumption rate of photovoltaic power generation

Photovoltaics have strong intermittency and volatility. When the power generation of photovoltaic power plants that are used spontaneously and surplus electricity is connected to the grid exceeds the capacity to be consumed, the excess electricity is sent to the grid at a lower price. When the photovoltaic power supply to the load is insufficient, industrial and commercial users have to purchase electricity from the grid, and the grid and photovoltaic system supply power to the load simultaneously. Industrial and commercial users have not achieved maximum reduction in electricity costs when configuring photovoltaics. After configuring the energy storage system, photovoltaic power is preferentially stored in the energy storage system, and the remaining electricity is supplied to the load. When the photovoltaic power is insufficient, the energy storage system supplies power to the load. Through the energy storage system, the power generation and consumption are smoothed out, improving the consumption rate of photovoltaic power generation and maximizing the benefits of electricity consumption.

2. Peak valley arbitrage

The most direct way to achieve value by adding energy storage systems is through arbitrage of peak and valley electricity prices. Users can charge energy storage batteries at a cheaper valley price during low load periods, and supply power to the load during peak load periods, achieving peak load transfer and earning profits from peak valley prices. Charging during deep valley periods and discharging during peak periods can not only play a role in peak shaving and valley leveling, but also help owners equipped with energy storage to obtain richer profits, effectively achieving a win-win situation.

3. Demand management

China adopts a two-part electricity price system for large industrial electricity with a transformer capacity of 315 kVA or above. The electricity cost per kilowatt hour refers to the electricity price calculated based on the user's actual electricity consumption, while the basic electricity cost refers to the electricity price calculated based on the user's transformer capacity (charging according to capacity) or maximum demand (charging according to demand). After the installation of energy storage systems in industrial and commercial parks with on-demand basic electricity prices, the real-time power of user transformers can be monitored. When the real-time power exceeds the demand, the energy storage will automatically discharge and monitor the real-time power, reducing transformer output and ensuring that transformer power does not exceed the limit. Reduce user demand for electricity and reduce the cost of electricity in industrial and commercial parks.

4. Power distribution capacity increase

When the original distribution capacity of industrial and commercial users is insufficient, the energy storage system can continue to charge quickly when the short-term power consumption is greater than the transformer capacity, meeting the requirements of load energy demand. Reduce the cost of using transformers, reduce transformer investment, and expand the capacity cycle.

5. Demand side response

Electricity demand response refers to when the wholesale electricity market prices rise or the reliability of the system is threatened, electricity users receive a direct compensation notice or electricity price increase signal from the power supply side to induce a reduction in load, change their inherent habit of electricity consumption mode, and achieve a reduction or shift in electricity load for a certain period of time in response to electricity supply