Application scenarios of solar energy storage system and its residential applications

A solar energy storage system is a system that uses solar power generation technology to store electrical energy in a battery pack to provide power when needed. Solar energy storage system is energy storage solutions that is environmentally friendly, energy-saving and sustainable, and has broad application prospects.

What is solar energy storage system?

A solar energy storage system consists of solar panels, battery packs (including lifepo4 battery, ternary lithium battery, flow battery, etc.), inverters, grid connectors, monitoring systems, etc.

Solar energy storage systems convert solar energy into electricity and store it for use at night or when the weather is bad. In addition, the solar energy storage system can also sell excess electricity to the grid through the grid connector, so as to realize energy recovery and utilization.

Application scenarios of solar energy storage system

Solar energy storage system has broad application prospects and can be used in applications such as homes, commercial buildings, electric vehicle services, rural areas, emergency backup power, and large-scale energy projects. It can provide reliable, efficient and environmentally friendly energy solutions for various fields.

● The solar energy storage system can provide independent power supply for households and commercial buildings, reduce dependence on the grid, reduce energy costs, and also sell excess electricity to the grid to achieve energy recovery and utilization.

● Solar energy storage systems can provide charging services for electric vehicles, reducing dependence on traditional energy sources.

● Solar energy storage systems can provide independent power supply for rural areas, solving the problem that traditional power supply is difficult to cover.

● The solar energy storage system can be used as an emergency backup power supply to provide protection for power supply in the event of natural disasters, power outages, etc.

● Solar energy storage systems can be used as part of large-scale energy projects to provide energy storage services for the power system, balance power supply and demand, and improve the stability and reliability of the power system.

Drivers of the solar energy storage system market

Policy support: Governments of various countries have introduced a series of policies to encourage and support the development of solar energy storage systems, including subsidies and tax incentives.

Energy transition: As the global demand for renewable energy continues to increase, solar energy storage systems are receiving increasing attention as a renewable energy solution.

Cost reduction: With the continuous advancement of technology and the gradual emergence of economies of scale, the cost of solar energy storage systems continues to decrease, making them more competitive.

Market demand: With the continuous emergence of emerging markets such as electric vehicles and smart homes, the demand for electric energy storage and management is also increasing, and solar energy storage systems just meet this demand.

The global solar energy storage system market size is expected to maintain high growth in the next few years and is expected to reach billions of dollars by 2025. Currently, Asia Pacific is the major growth region for the solar energy storage system market, with China being the largest market. In addition, Europe and North America are gradually increasing the demand for solar energy storage systems.

Main types of residential solar energy storage systems

Residential solar energy storage system means that the power generated by the solar system is mainly for the user’s own use, and the surplus power is connected to the grid or to supply energy for the load.

A solar system equipped with energy storage can help users realize that both daytime and nighttime electricity is provided by solar power, further improving the economy of the solar system. This mode is mainly used in household solar energy storage and industrial and commercial solar energy storage scenarios.

The market for household solar energy storage applications is growing rapidly. On the one hand, high overseas energy prices have increased the cost of electricity for residents. Solar energy storage can help users realize electricity for self-use, use the difference in peak and valley electricity prices to control energy consumption, and improve the economy of electricity consumption.

On the other hand, as the cost of solar energy storage falls, its economics will further improve. Residential solar energy storage system mainly includes off-grid integrated solar energy storage system, AC-coupled solar energy storage system, and off-grid solar energy storage system:

Off-grid integrated solar energy storage system

The system generally consists of components, lithium batteries, energy storage inverters, smart meters, power grids, grid-connected loads, and off-grid loads. The bidirectional dc to ac converter is realized by the energy storage inverter for charging and discharging of the battery.

AC-coupled solar energy storage system

The AC-coupled solar energy storage system is mainly composed of components, grid-connected inverters, lithium batteries, AC-coupled inverters, smart meters, power grids, grid-connected loads, and off-grid loads. The system is mainly used in the application scenario of expanding the energy storage system of the existing solar system.

Off-grid solar energy storage system

The off-grid solar energy storage system is mainly composed of components, energy storage batteries, off-grid inverters, loads and generators. The system is mainly used in remote areas without power grids, isolated islands, etc.

Benefits of residential solar energy storage system

Deal with surges in electricity usage and avoid outages

Now it has become a trend for some households to install central air conditioners, lay floor heating, purchase new energy vehicles, and install charging piles, which has led to a surge in household electricity consumption.

On the other hand, with the sharp increase in electricity consumption in society, there may be power outages during the peak period of electricity consumption. At the same time, extreme weather such as typhoons, thunderstorms, and snowstorms may also cause power outages in severe cases. The installation of solar energy storage system can cope with the surge of electricity consumption and meet the needs of emergency electricity consumption.

Maximize the self-consumption rate of solar energy

The solar energy storage system can give priority to the solar power to the load, and store the excess power in the battery for insufficient solar power or at night. The battery discharges to supply energy to the load to increase the self-consumption rate of the solar system, achieve energy self-sufficiency, and save electricity expenses.

Cut electricity bills with time-of-use tariffs

Users use the solar energy storage system, using solar power and peak-valley time-shifting, which can effectively reduce electricity costs.

Conclusion

With the deepening of the contradiction between solar energy installed capacity and consumption, the penetration rate of electric vehicles, charging piles and other equipment, and the increase of household electricity consumption, the solar energy storage system will gradually become a development trend.

More households will effectively reduce electricity bills and minimize electricity bills by analyzing the composition of local electricity bills, considering the introduction of solar energy into energy storage, and integrating tiered electricity prices and peak and valley electricity prices.