In 2011, energy storage began to put on demonstration projects. In the past two years, many commercial projects have begun to explore a large number of layouts. Now is the critical period for the transformation from demonstration to commercial development. The promulgation of the Guiding Opinions will certainly play a very good guiding role in the commercialization of energy storage industry.
"The battery of the electric car is modular and detachable, and can be taken down as a power supply when necessary. Energy gateways are installed in every household, which can store and discharge electricity at any time as required. New energy power generation has become smooth and can be freely connected to the power grid ... "Gao Feng, vice president of Tsinghua University Energy Internet Innovation Research Institute, said in an interview with a reporter from china economic herald that in the future, with the gradual development and application of energy storage technology, these scenes will no longer be the imagination of science fiction, but will actually happen in our life.
Energy storage, i.e. energy storage, refers to a cyclic process in which one kind of energy is stored in the same or converted into another energy form through a medium or equipment and released in a specific energy form based on future application requirements. Energy storage technology has been developed in our country for nearly 20 years. From obscurity and insignificance to initial scale and promising prospect, it is receiving more and more attention and attention.
Recently, the National Development and Reform Commission, the Ministry of Finance, the Ministry of Science and Technology, the Ministry of Industry and Information Technology and the Energy Bureau jointly issued the Guidance on Promoting Energy Storage Technology and Industrial Development (hereinafter referred to as the Guidance). As the first guiding policy of the energy storage industry, the release of the Guidance has further promoted the pace of energy storage towards commercialization and made the development prospect of the energy storage industry clearer. "The Guidance is just right and at the right time. In 2011, energy storage began to put on demonstration projects. In the past two years, many commercial projects have begun to explore a large number of layouts. Now is the critical period for the transformation from demonstration to commercial development. The promulgation of the Guiding Opinions will certainly play a very good guiding role in the commercialization of energy storage industry. " Zhang Jing, Secretary General of the Energy Storage Alliance, said in an interview with reporters from china economic herald.
The core value is to provide "value-added services" for energy.
Energy storage itself cannot generate new energy, it is only a process of storage and release, and even energy loss will occur in this process. Then, why do we have to make great efforts to develop and promote it?
Gao Feng's explanation for this is that the value of energy storage lies in the value-added services it can provide. "At different times, energy is stored separately, which changes the original energy, thus improving the efficiency of energy utilization. This involves a lot of knowledge, such as how much electricity is charged, how much electricity is discharged, when to charge, when to discharge, how long to charge and how long to discharge. Through the regulation of energy storage, the energy system can be made more efficient and convenient. Another common application is that unstable electricity can be converted into stable electricity through energy storage, and low-quality electricity can be converted into high-quality electricity. "
Gao Feng gave an example. "There are two companies that need clean electricity from wind power. One of them is an electronics company that needs very stable electricity, and the other is a refrigerator experience store, which is not greatly affected by power fluctuations. The wind farm can sell electricity directly to the second enterprise, but it cannot sell electricity directly to the first enterprise. At this time, energy storage is needed. Energy storage is equivalent to a value-added service provider, which buys electricity fluctuating from wind farms at a low price and sells it to electronic factories at a high price after conversion. Although the amount of electricity has not changed, the amount of electricity has increased in value. This is the embodiment of the core value of energy storage. "
In fact, many enterprises are already experimenting and demonstrating the energy storage application scenario that provides simple value-added services. Zhang Jing introduced that in Jiangsu and Shenzhen, many enterprises will install energy storage equipment to store electricity when the electricity price is low and release it when the electricity price is high. "Not only the customer side, the whole power system can be used for transmission and distribution, and different fields have different functions." Zhang Jing said that the value of energy storage is far from enough.
In September this year, qi zhixin, science and technology equipment department of the national energy administration, made it clear at the energy storage sub-forum of the annual meeting of the China energy research association that promoting the development of energy storage technology industry is conducive to promoting the scale of non-fossil energy, promoting the development of non-fossil energy and microgrid, enhancing the flexibility of the power system, promoting the construction of the energy internet, promoting the transformation and revolution of transportation, and helping China to take the lead in the world's new round of global technological revolution and industrial transformation.
Five Major Tasks Clarify Future Development Goals of Energy Storage
By the end of 2016, the cumulative installed capacity of energy storage projects put into operation in the world was 168.7GW, up 2.4% year-on-year. Among them, the cumulative installed capacity of energy storage projects put into operation in China was 24.3GW, up 4.7% year-on-year.
It accounts for 1/7 of the world's share and the year-on-year growth is almost twice that of the same period in the world-by comparing the figures, it can be clearly judged that China's energy storage industry has indeed developed rapidly in recent years. "China has now become the world's largest chemical energy storage application market. By the end of 2020, the total installed capacity of energy storage technology in China is expected to reach 44GW. " Zhang Jing said.
On the one hand, the pace of development keeps moving forward; on the other hand, many problems are exposed while developing. At present, there are many difficulties in the construction and operation of energy storage projects in our country, such as the lack of independent identity recognition in the power system, many obstacles in the access of energy storage to the power grid to participate in the power market, high initial investment cost in the construction of energy storage systems, single profit point in the operation of energy storage projects, long project investment return period, failure to obtain returns on multiple application values of energy storage, etc.
The issuance of the Guiding Opinions aims at these problems, defines the important application value of energy storage in smart grid, energy system with high proportion of renewable energy and energy Internet, and puts forward the development goals and key tasks of energy storage technology and industry in China in the future.
"In the next 10 years, relevant work will be carried out in two stages. The first stage is to realize the transition of energy storage from research and development demonstration to the initial stage of commercialization. In the second stage, the initial stage of commercialization will be transformed into large-scale development. " The Guiding Opinions set out the development goals for the energy storage industry during the 13th Five-Year Plan and the 14th Five-Year Plan.
Zhang Jing said that a clear target will greatly boost the development speed of the energy storage industry. "During the 13th Five-Year Plan period, we will do more work in equipment, technology research and development, demonstration and application, and standards. By the 14th Five-Year Plan, the sustainable profitable commercial operation of energy storage systems will be fully realized and some technologies and applications will reach international standards. As soon as this is clear, everyone has a bottom in their hearts. Energy storage manufacturers know how to promote projects, power grids know how to accept energy storage technologies, and some parks and local governments also know how to issue local energy storage plans. " Zhang Jing said that the local government can take the "Guiding Opinions" as the basis and basis, and integrate the development of energy storage into the local economic system, so that the energy storage industry can play a better role and also drive the local economic development.
Zhang Jing's Zhongguancun Energy Storage Industry Technology Alliance was commissioned by the State Energy Administration and led by the Institute of Engineering Thermal Physics of the Chinese Academy of Sciences, the Institute of Physics of the Chinese Academy of Sciences, the Chinese Academy of Electrical Sciences and other research institutes, as well as universities such as Tsinghua University to participate in the preparation of the Guiding Opinions. "Next, our alliance will also establish contacts with local governments to help enterprises develop market applications. We also very much hope that typical local energy storage application scenarios will be gathered and used as templates to radiate to the whole country. " Zhang Jing said that the commercial development of the energy storage industry can take the lead in achieving breakthroughs from the local level.
In order to achieve this goal, the Guiding Opinions also give specific tasks in five aspects: "Promoting research and development demonstration of energy storage technology and equipment", "Promoting application demonstration of energy storage to improve the utilization level of renewable energy", "Promoting application demonstration of energy storage to improve the flexibility and stability of power system", "Promoting application demonstration of energy storage to improve the intelligent level of energy use" and "Promoting application demonstration of diversified energy storage to support energy Internet application".
From the pilot demonstration to the large-scale commercial development, the energy storage industry must complete this "breathtaking leap" perfectly, without the help of the "Guiding Opinions".
Distributed Development Can Activate Existing Resources
"The best way to find the market value of energy storage facilities and improve energy storage economy is to allow energy storage technology to fully participate in all aspects of the power market, compete with other technologies in different scenarios, and obtain multiple application value returns by means of price." Zhang Jing said that the future development of the energy storage industry must fully participate in the market.
For this reason, the Guiding Opinions clearly propose to strengthen the coordinated connection between the power system reform and the energy storage development market mechanism, accelerate the construction of the power market, establish a market-oriented trading mechanism and price formation mechanism for flexible resources such as energy storage, stimulate market vitality and promote the commercial development of energy storage in China.
"Compared with subsidies for energy storage and short-term large-scale cost reduction, the construction of a fair and open electricity market can not only avoid market distortion and deception caused by subsidies, but also truly cultivate the theme of energy storage market and ensure the healthy and orderly growth of China's energy storage industry." Zhang Jing said.
Gao Feng also said, "There is no special mention of subsidies in the Guiding Opinions, but rather a mechanism to promote industrial development. This is a particularly good point. We can't be like an electric car, so long as the car is built, no matter whether it is sold or not and whether it is on the road or not, subsidies will be given directly. "
In the future, participating in electricity trading market, auxiliary service market, capacity market and demand response bidding are all important directions for energy storage to find prices and obtain value compensation.
The peak has provided an example of demand response, which fully illustrates the infinite possibility of future development of energy storage. "Now all communication base stations are equipped with UPS (uninterruptible power supply), which is actually an energy storage. We now have a large number of communication base stations, building control stations and substations. These distributed energy storage systems already exist and have been shared by users. If these existing resources are activated, they will be of great value. "
"The UPS of each communication base station has 40 kilowatt-hours of electricity for the smallest battery. Beijing Telecom has 30,000 base stations in Beijing, totaling 1.2 million kilowatt-hours of electricity. If you add mobile and Unicom base stations, there will be more stock. We have peak load every summer. If we can mobilize the power of these base stations, we can meet the peak summer more smoothly. The use of massive distributed energy storage for regulation does not require land acquisition, construction of energy storage power stations or purchase of energy storage batteries. This matter is not very difficult to operate, because these batteries of the communication base station need deep charging and discharging every year according to the regulations, as long as the communication company and the power supply bureau negotiate and let the communication company schedule the deep charging and discharging time at the peak power consumption in summer. This is the concept of cross-border innovation. " Long-term research and promotion of the energy internet, peak when talking about this idea, look forward to unlimited.
"Before entering this track, even if there are many policy incentives, it will not develop. Once you enter the track, you will not be able to stop it. For example, photovoltaic, from 2008 till now, the electricity cost has dropped by more than 80%, and the downward trend continues. The electricity cost will drop by 20% in 2016, and it is expected to drop by more than 10% this year, which can be called a "perfect learning curve." Qi Zhixin is also very optimistic about the development of energy storage.