The current industrial and commercial energy storage market includes two types of usage scenarios: photovoltaic commercial and non photovoltaic commercial. For commercial and large industrial users, the spontaneous self use of electricity can be achieved through a photovoltaic+energy storage matching model. For scenarios such as commercial buildings, hospitals, and schools that are not suitable for installing large-scale photovoltaic self generation, it is necessary to install energy storage systems to achieve peak shaving and valley filling, and reduce capacity electricity prices.

Photovoltaic combined energy storage has become the preferred new energy method for many commercial and large industrial users today. Photovoltaic combined energy storage systems have many advantages, such as improving power supply reliability, increasing spontaneous self use rate, optimizing electricity bills, and so on. From a global perspective, due to factors such as energy crisis, high electricity bills, and weak power grids, the development of photovoltaic energy storage will become the norm in various countries and regions. The following are the advantages of the photovoltaic+energy storage system supporting model:

1、Improving the consumption of new energy：Photovoltaics have strong intermittency and volatility. When the power generation of photovoltaic power stations that are used spontaneously or surplus electricity is consumed beyond the load, the surplus 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: In general, valley hour electricity prices are much cheaper than peak hour electricity prices. If users introduce solar energy storage systems and use photovoltaic power and peak valley time shifting methods, they can effectively reduce electricity costs.

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.

3、Enhancing the stability of microgrid systems: For areas without electricity or lacking electricity, or offshore islands, microgrid systems established through photovoltaic and energy storage can provide stable electricity to the local area. Moreover, microgrids reduce the noise and environmental pollution caused by traditional energy sources, and have lower power supply costs, making them more economical and reliable.

4、Realize demand management: Generally, industrial and commercial parks charge basic electricity prices on demand. After installing energy storage systems, transformer output is reduced to ensure that transformer power does not exceed the limit. Avoiding the possibility of transformer capacity expansion, reducing user demand for electricity, and reducing the cost of electricity in industrial and commercial parks.

Detailed understanding of the photovoltaic+energy storage operation mode and system configuration is required, which can be contacted by Sharp Lai.