2017 is at home and abroad
An unusually busy year for energy storage development
Among all kinds of energy storage technologies, electrochemical energy storage has developed at the fastest speed. The development of lithium-ion batteries, sodium-sulfur batteries, lead storage batteries, and flow batteries has entered the fast track. According to the incomplete statistics of the CNESA (Zhongguancun Energy Storage Industry Technology Alliance) project library, the cumulative operating capacity of global electrochemical energy storage from 2000 to 2017 was 2.6 GW, and the capacity was 4.1 GWh. The annual growth rate was 30% and 52% respectively. In 2017, the newly installed capacity was 0.6 GW and the capacity was 1.4 GWh. Over 130 projects were put into operation throughout the year.
Since 2016, electrochemical energy storage has entered a period of rapid application, and the construction of energy storage projects has become “multiple, large, and hotâ€. According to CNESA statistics, the scale of global planning and projects under construction in 2016-2017 reached 4.7 GW, and more and more projects are expected to be put into operation in the next year or two; to meet the demand for large-scale energy storage in power systems, electrochemical energy storage The construction capacity of the project is also increasing. According to statistics, the total number of projects above 10MW (inclusive) in 2016-2017 exceeds 40; the participation of various countries in energy storage applications is also increasing. According to CNESA statistics, 2015 includes a total of US, Electrochemical energy storage systems have been deployed in 10 countries, including China and Germany. In 2017, nearly 30 countries from North America, South America, Africa, Europe, Oceania and Asia have put into operation their energy storage projects. It shows the trend of global application of energy storage.
The speed of development of electrochemical energy storage in China is even more striking. According to CNESA data, the cumulative operating capacity of electrochemical energy storage from 2000 to 2017 was nearly 360MW, accounting for 14% of the global operating scale, with an annual growth rate of nearly 40%, exceeding the global growth rate. During 2016-2017, the scale of projects planned and under construction in China is nearly 1.6GW, accounting for 34% of the global planning and construction scale. China is expected to lead the industry in the next few years.
2017 is also a country
One year of frequent energy storage support policies
As a country that released energy storage policies earlier, the US policy support for energy storage is extending from California to 10 states including Massachusetts, Oregon, and Hawaii. Britain, Austria, the Czech Republic, Italy, Australia, India and China have all enacted energy storage development policies in 2017. The vertical depth support for energy storage policies and the breadth of regional horizontal coverage are strong supports for the rapid development of global energy storage in 2017.
In October 2017, China's first state-level large-scale energy storage technology and application development policy, "Guidelines on Promoting Energy Storage Technology and Industrial Development" was officially released. The guidance points out to promote the R&D and demonstration of energy storage technology equipment, promote the application of energy storage to enhance the level of renewable energy utilization, promote the application of energy storage to enhance the flexibility of the power system, demonstrate and promote the intelligent application of energy storage and energy level application demonstration and promotion. The application of energy storage diversification in the five major areas of the demonstration of supporting energy Internet applications. At present, Dalian, Yichun, Beijing, Ningbo, etc. have all introduced local energy storage support policies. In the future, more provinces and cities will formulate relevant policies in conjunction with local resources and industrial advantages. At the same time, they will involve access mechanisms and price compensation mechanisms for energy storage in the electricity market. The policy details should be the focus of the next step in energy storage policy support.
After clearing the 1.325 GW power purchase plan in California, Oregon, Massachusetts, and New York State have also announced their energy storage purchasing targets; the state of New Mexico has already used energy storage as a resource in the planning of public utility companies; Maryland promotes the design, construction, financing, and operation of renewable energy and energy storage projects at designated sites throughout the state. The United Kingdom and Australia are countries with relatively rapid energy storage development in the near future, and policy follow-up is also very timely. The UK’s policy focus is to incorporate energy storage into the “British Intelligent Flexible Energy System Development Strategyâ€, giving energy storage participation in the UK electricity market a reasonable identity, and affirming its role; Australia’s multiple governments have formulated energy storage installation incentive plans through subsidies. Focus on supporting the user side energy storage system.
2017 is more energy storage system
One year that meets market demand
Although the industrial development is intensifying and speeding up, and with the support of policies, the market has gradually opened the door to energy storage, but it is also necessary to clearly realize that the current development of energy storage is still mainly policy-driven, to achieve profitability and to develop toward commercialization. The road is still full of uncertainty and challenges. Energy storage has become a closely watched “Blue Ocean†industry. In 2016, the global investment in financing of energy storage exceeded US$4.33 billion. Social cognition and participation have brought confidence to the industry, but with the transition from demonstration to market application. The demonstration scenario of “independence from the market†will end, policy support will gradually weaken, energy storage will participate in the actual market operation and competition, and the technical performance, system configuration, application mode, applicability of profit-making methods, and scientific nature will all accept the market. The inspection, the mode of deep integration between energy storage and the market has started.
In 2017, 2.1 GW and 4.8 GW of battery energy storage projects respectively qualified for auctions in the UK T-1 and T4 capacity markets. However, due to the short duration of energy storage, taking into account its limited ability to take up pressure on the power system, taking into account the fairness of other long-term non-energy-storage technology participation, after evaluation, the British BEIS (British Commercial Energy and Supply Strategy Department) in 2017 In December, it was confirmed that for the T-4 and T1 capacity auctions, the derating factor for half-hour battery storage was reduced. This puts forward new requirements for energy storage systems that have the advantage of being able to flexibly adjust for a short time. In the short term, it restricts the application of short-term energy storage in the capacity market, but it also stimulates energy storage operators to actively develop long-term energy storage solutions.
In the United States, the PJM, which has 265 MW of energy storage for FM participation (a regional transmission organization responsible for the 13 states on the Atlantic coast of the United States and the District of Columbia), has also recently modified the FM market rules. Because at high ramp rates, RTOs (Regional Power Transmission Organizations) require large-scale generator sets or load switching to maintain system balance, and require participation in RegD while reducing RegD (high ramp rate but limited energy) resource purchases. The energy storage extends the charging and discharging time of the grid. The revision of the rules shows that the equal competition between energy storage and other resources in the market has begun. How to seek interest, find and fight for the most reasonable space in the new rules is a new test put by the market for energy storage.
The standardization of energy storage products also needs to be strengthened. Take Germany as an example. By 2017, the installed capacity of household energy storage systems is 52,000 units. The demand for optical storage systems in the commercial and industrial fields is also great, but its large-scale promotion is facing a lack of The pressure of standard products, standard technologies, standard interfaces, and standard business models; in addition fire protection, health, and safety also require standardized solutions. If these problems are not solved, it is difficult for energy storage applications to be fully rolled out on a large scale in Germany.
In the market application of energy storage in the future, the market demand and technical capabilities will be continuously adjusted to improve the market applicability of the technology; the performance of hardware, software and interfaces in the energy storage system and cooperation with other equipment will be continuously optimized in the project operation. Perfection; In the process of participating in the electricity market, the positioning, application content and value realization of energy storage in the system will be optimized in constant game and correction; under the market-based electricity price mechanism, energy storage will replace other equipment and systems. Advantages will also be gradually verified; energy storage needs to quickly develop standards and specifications to meet users' needs for the environment and safety. The above-mentioned work and problems will inhibit the development of energy storage in a certain period of time. However, this is not negative. The development of energy storage needs continuous exploration, trials, and even failures and readjustments, as well as continuous advancement in the market. Only through market inspection is it the most competitive and viable industry.
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