Time power price mechanism to promote | economic efficiency of energy storage system surfaced

In recent years, UPS giant Eaton has aggressively used Nissan Leaf electric vehicle batteries in its own Xstorage energy storage system. In addition to being widely used in uninterruptible power systems such as factories and public places, Eaton also can respond to time charges So that electricity consumers can effectively store cheaper electricity from peak hours at home and use it when the electricity price is relatively high. However, given that the current government of Taiwan actively promotes rooftop solar solutions and if it can integrate with energy storage systems, Will be expected to bring a lot of gold rush Amoy large consumers incentives.

In essence, an energy storage system uses batteries to store electricity and therefore can only store a certain amount of energy. For example, when a household can issue 400 kWh a month and its average power consumption is 300 kWh, The extra 100 degrees of electricity can be stored through an energy storage system with a capacity of 100 degrees. However, if it exceeds 100 degrees, the energy storage system must increase its capacity or it can not be stored.

With the establishment of the grid infrastructure, the generator will probably be able to resell the surplus electricity directly to the utility company. However, if the generator hopes to store cheaper electricity in the home from peak hours, then the energy storage device can give full play Its role.

Lin Yu-pei, Eaton's sales director, said the company's Xstorage energy management system allows power generators to set up when and where they need to be charged and discharged, prompting a more flexible deployment of power because when there is no energy storage system It is not possible to use electricity at off-peak tariffs during peak hours, and excess power can be stored in the energy storage system instead of being supplied to the utility company when the capacity of the energy storage system is insufficient Will not form a waste of energy issues.

For this type of demand, Eaton's Xstorage energy storage system is currently very much on the look and feel, and the battery replacement method is also quite simple, both of which are expected to meet the needs of home installation.However, in the storage If the battery power in the system is not used for a long time, it will gradually lose power over time as that of batteries in consumer electronics. Therefore, it will be more suitable for the use ethnic group that can be used immediately after power is stored of.

At present, the government expects to achieve 20GW of solar energy installed capacity by 2025, of which solar photovoltaic roof-mounted capacity must reach 3GW, ground-based model is 17GW. According to Eaton's analysis, Taiwan's roof-type solar power generation can be subdivided into single-family houses Roofs, factory roofs, agricultural and public roofs (including apartment-type houses), while single-family houses account for about 40% of the total area due to their large area.

Lin Yupei further said that for the above-mentioned various solar energy systems, Eaton's energy storage systems all provide corresponding solutions. Among them, the capacity of ground-based solar power plants for energy storage systems is relatively large, whereas the capacity of rooftop solar energy systems Demand is relatively small in the Taiwan market, Lin Yupei pointed out that both the roof-type or ground-based development, will be closely linked with the government subsidies, if the government chose to subsidize residential solar power generation, while increasing the wholesale price May allow the market to upgrade the rooftop-type installation will greatly enhance the market further.