In all kinds of energy storage technology, the development of electrochemical energy storage is the fastest, the development of lithium-ion battery, sodium sulfur battery, lead battery and liquid-flow battery has entered the fast lane. According to Cnesa (Zhongguancun Energy Storage Industry Technology Alliance) Project library Incomplete statistics, 2000-2017 Global electrochemical storage capacity of the cumulative scale of 2.6GW, 4.1GWH, the annual growth rate of 30% and 52% respectively; 2017 new installed capacity of 0.6GW, capacity of 1.4GWh, has been more than 130 projects throughout the year.
Since 2016, electrochemical storage can enter a rapid application period, the construction of energy storage project presents the phenomenon of "many, large and hot". According to CNESA statistics, 2016-2017 Global planning and construction projects in the scale of 4.7GW, more and more projects are expected to be in the near one or two years of operation; in order to meet the demand of large-scale energy storage of power system, the capacity of electrochemical energy storage individual project is increasing, According to the statistics of 2016-2017 10MW (including) above the total number of projects more than 40, the state of energy storage applications to participate in the heat is also increasing, according to Cnesa statistics, 2015, including the United States, China, Germany and other 10 countries deployed electrochemical energy storage systems, 2017 from North America, South America , Africa, Europe, Oceania and Asia, nearly 30 countries have invested in energy storage projects, showing the trend of global application of energy storage.
The development speed of electrochemical energy storage in China is more noticeable. According to Cnesa data, 2000-2017, the cumulative operation of electric chemical storage capacity of nearly 360MW, accounting for the global scale of 14%, annual growth rate of nearly 40%, more than global growth. During 2016-2017, China's planning and construction projects in the scale of nearly 1.6GW, accounting for global planning and 34% of the scale of construction, China is expected to lead the industry in the next few years.
2017 is an unusually busy year for energy storage and development at home and abroad
As a country that released its energy-storage policy earlier, U.S. policy support for energy storage is extending from California to 10 states such as Massachusetts, Oregon State and Hawaii State. Britain, Austria, the Czech Republic, Italy, Australia, India and China enacted the Energy storage development policy in 2017. The vertical depth support of energy storage policy and the breadth coverage of the region are the favorable support for the rapid development of global storage in the 2017.
October 2017, China's first national large-scale energy storage technology and application development policy, "on the promotion of energy storage technology and industrial Development Guidance" officially released. Guidance points to promote the development of energy storage equipment and research and demonstration, promote energy storage to promote renewable energy utilization level application demonstration, propulsion storage can enhance power system flexibility stability application demonstration, propulsion storage energy to promote the use of intelligent level of application demonstration and to promote the diversification of storage applications to support the demonstration of the five major areas of power network application work. At present, Dalian, Yichun, Beijing, Handan and so on have issued local storage support policy, in the future will be more provinces and cities combined with local resources and industrial advantages to formulate relevant policies, while involving energy storage in the electricity market access mechanism and price compensation mechanism policy details should be the next step of energy storage policy support.
After the California clear 1.325GW Electric Power purchase plan, Oregon State, Massachusetts and New York State also successively announced the electric power institution's energy storage procurement target; New Mexico State has been able to use it as a resource in the planning of public utility companies; Maryland promotes the design, construction and Financing and operation of renewable energy and energy storage projects. The UK and Australia are the fastest-growing countries in recent years, and policy follow-up is also very timely. Britain's policy focus is on incorporating the energy into the UK's smart flexible energy development strategy, giving it a reasonable identity to participate in the UK electricity market and affirming its role; many governments in Australia have developed energy storage installation incentive schemes that support the user side energy storage system through subsidies.
2017 is a year of deep running-in of storage system and market demand
Although the industrial development heat and speed, in the policy support, the market gradually opened the door to storage, but we have to soberly recognize that the current energy storage development or policy-driven, to achieve profitability, the road to commercialization is still full of uncertainty and challenges. The "Blue Sea" industry, which has become the focus of attention, 2016 global investment in energy storage area of more than 4.33 billion dollars, social awareness and participation in the industry to bring confidence, but with the demonstration to market-oriented application of the transformation, "independent market" model scenario will end, policy support gradually weakened, Storage energy will participate in the real market operation and competition, technical performance, system configuration, Application mode, the applicability of profit mode, scientific all must accept the market test, storage and market depth running-in mode has been opened.
In 2017, there were 2.1GW and 4.8GW battery storage projects that were eligible to participate in the UK T-1 and T4 capacity market. But because of the short storage time, taking into account its limited commitment to power systems and the fairness of other long periods of non storage technology participation, the UK Beis (UK business Energy and Supply Strategy Department) confirmed in December 2017 that capacity auctions for T-4 and T1 Reduce the degradation factor for a half hour battery storage. This gives a new requirement for the energy storage system with advantages of short time flexible regulation, which restricts the application of short time storage in the capacity market, but also stimulates the storage operators to actively develop long-term energy storage solutions.
There have been 265MW storage to participate in FM PJM Market has also recently revised the FM market rules. Due to the high climbing rate period, RTO needs a large set of generators or load to maintain system balance, in reducing regd (high climbing rate but limited energy) procurement of resources, but also required to participate in REGD storage can extend the power grid charge and discharge time. The revision of the rules shows that there is an equal competition between storage and other resources in the market, how to seek the benefit in the new rules, to find and strive for the most reasonable space is the new test that the market can put forward for the storage.