How to improve the energy storage economy of new energy allocation

The economy of new energy allocation and energy storage is mainly realized through three aspects

At this stage, more than 20 local provinces in China have proposed to configure energy storage in wind power, photovoltaic and other new energy stations. Under the current conditions, the economy of the project is still the focus of the investors. This article will discuss how to improve the economy of new energy storage.

For many Chinese energy storage companies, the economy of new energy distribution and storage should not be compared with that of companies themselves, but should be compared with that of gas power generation and other similar carbon generating power systems. The positive effect of new energy allocation and energy storage is its economic value.

China’s ZNTECH said that at the bidding stage of many projects, the price of energy storage is only cheaper, not the cheapest. If it is only for grid connection and energy storage, but does not care about its role, it runs counter to their original intention.

They put forward suggestions, hoping that after the new energy is distributed and stored, there will be corresponding operation detection and assessment methods to verify how the energy storage is applied to the new energy generation side and how to improve the power quality.

Three aspects to realize the economy of new energy allocation and energy storage

In the past, the economy of new energy allocation and energy storage was mainly realized through three aspects:

● First of all, energy distribution and storage can smooth the level of photovoltaic power generation and improve the grid power;

● Secondly, the energy storage can make the actual power generation match the planned power generation as much as possible through the short-term or ultra short-term new energy power generation prediction system to reduce the deviation of the power generation plan;

● Finally, the energy storage can participate in the auxiliary power service through the scheduling or regulation of the energy storage.

In addition, the economy of the energy storage system can be further optimized by some methods, such as: reducing initial investment by improving the reuse rate of AC side equipment; Under the condition of energy storage, reasonable photovoltaic capacity ratio is selected to improve the utilization rate of energy storage equipment; Select a reasonable system scheme to improve the integrated optical storage conversion efficiency.

Distributed storage still needs supporting policies

In China, the earliest energy storage project was distributed energy storage, but its development was not smooth. The reason is that the business model is too simple, which is purely arbitrage between peak and valley.

However, with the promotion of the photovoltaic industry, the penetration rate of distributed photovoltaic in China has increased dramatically, and there are new application scenarios for distributed energy storage.

According to statistics, 9 cities, including Jiangsu, Zhejiang, Shandong, Sichuan, Hebei, Yunnan, Qinghai and Hainan, have successively issued requirements for distributed photovoltaic energy storage like pv battery system. However, most of the policies are issued in the form of a draft for comments, and there are still no mandatory and clear requirements on how to plan after storage allocation and whether centralized scheduling is required. 

Whether the distributed photovoltaic distribution and storage will be a flash in the pan, the supporting market mechanism and policies are crucial. At present, in addition to the basic modes of peak valley arbitrage, auxiliary power service and emergency reserve, China’s distributed energy storage profitability is also developing new business models such as dynamic capacity expansion.

The distribution network in China is still set up following the traditional power consumption mode. With the industrial development and new energy access, the distribution network has been unable to meet the current power demand development in some regions. Distributed energy storage can realize the role of power grid expansion, but it is not clear how this application scenario is defined and widely promoted.

Now there are some cases of integrated energy companies using mobile energy storage systems for temporary capacity expansion. Once this model is very mature, the distributed energy storage market will get better development.

The integration of optical storage and charging has become a new trend

When it comes to the application scenario of new energy distribution and storage, we have to mention the recent hot optical storage and charging integration project. In recent years, China’s emerging optical storage and charging technology is mainly used in high-speed service areas.

In August of this year, the Ministry of Transport put forward the requirement that expressway service areas in areas other than high altitude and cold regions in China can provide basic charging services before the end of this year.

Previously, the charging life of most electric vehicles was limited. Going to the business center to grab the charging pile on holidays once became a nightmare for new energy owners. After the advent of super fast charging technology, it undoubtedly solved the problem of long-distance running of new energy vehicles.

From the perspective of new energy vehicle companies, after the emergence of super fast charging, the power supply capacity of charging facilities is required to be higher and higher, which also brings great challenges to the existing charging network system.

Like high-speed toll stations and rest stations, there is no large power configuration, including many parks that do not have or do not have enough electricity, so optical storage and charging is just a useful supplement to the grid.

The construction of storage and charging is particularly important. In the future, energy storage may be more necessary to solve the problem of tram charging. The integration of optical storage and charging has always been an ideal solution for rapid charging of electric vehicles. The integration of optical storage and charging is a one-stop application of photovoltaic, energy storage and charging.

Its obvious advantages lie in improving the operating efficiency of charging facilities and increasing revenue through multiple revenue models. Therefore, the integration of optical storage and charging will have a better prospect in terms of economy.

Photovoltaic power generation and flexible charging and discharging in peak and valley can provide various services such as peak shaving and demand response for grid operation, effectively realize peak shaving and valley filling, mitigate the impact of peak power supply on the grid, and reduce power consumption costs.

In recent years, the energy storage market continues to boom, and energy storage is undoubtedly a track full of potential. However, as the insiders said, energy storage must be based on safety, oriented by economy, and constantly develop rapidly under the guidance of the entire top tier architecture.