2018 energy storage industry market segment analysis of present situation and the development prospects1

Pumping energy storage dominant

according to different storage technology, storage can be divided into mechanical energy storage, electrochemical energy storage, electromagnetic energy storage. Among them, the mechanical energy storage mainly includes pumping energy storage, compressed air energy storage and flywheel energy storage, its technical characteristics are as a storage medium such as water, air, these energy storage medium are not chemical change; Electrochemical energy storage battery energy storage, its technical characteristics are using chemical element as a storage medium, charge and discharge process in fact is the process of chemical reactions or intending to energy storage medium; Electromagnetic energy storage refers to the energy stored in the electric field, magnetic field and alternating electromagnetic field energy storage technology, main technological development direction for the superconducting magnetic energy storage, etc.

at present, the mechanical energy storage is the most mature, the most common used in pumped storage, is mainly used for power system of peak shaving and valley filling, frequency modulation, phase modulation, emergency standby, etc. According to CNESA data statistics, as of the end of December 2018, China has put energy storage project of the cumulative size of 31. 2 gw, which has installed the largest pumped storage, about 30. 0 gw, the proportion is as high as 96%.

pumping energy storage for the most part, mainly thanks to its mature technology and low cost, but the electrochemical energy storage is the most widely application scope, the development potential of the largest energy storage technology, is growing rapidly in recent years. In 2018, the new operation of storage project size is 2. 3 gw, including electrochemical energy storage of the largest new was put into operation, to 0. 6 gw, surged 414% year-on-year.

in all kinds of electrochemical energy storage, lithium ion battery since the realization of industrialization in the early 1990 s, since it has high energy density, high working voltage, long cycle life and fast charging, discharge power, small self-discharge rate, high memory effect small and green environmental protection and other outstanding advantages, the rapid development; After 2000, lithium batteries gradually occupy the dominant position in the field of mobile phone batteries, mobile phone batteries, until the basic monopoly in notebook computers, digital cameras, power tools, and other fields has been widely used, and gradually to develop the field of new energy vehicles, etc.

by the end of 2018, China has put into operation the electrochemical energy storage project, the accumulation of lithium ion battery installed proportion is as high as 68%; Followed by the lead battery, accounted for 29%; Sodium flow batteries, flow batteries, such as ultracapacitors share co. , LTD.

compared to mechanical energy storage, electrochemical energy storage, electromagnetic energy storage technology is still in development, expensive, practical application is limited. Superconducting magnetic energy storage, for example, in addition to the cost of the superconductor itself, maintain the system low temperature lead to improve maintenance frequency and cost is quite high, so the world within the scope of many of the superconducting magnetic energy storage engineering is running or in the stage of development.

key

the pumping energy storage is still the development of our country's energy and power load center distance, power system has always followed the big power grid, the development direction of large motor, according to the concentration and distribution mode, with the rapid development of renewable energy generation and the social requirements for power quality improving, energy storage technology application prospect.

CNESA predicted that by 2020 China's energy storage market scale will reach 41. 996 gigawatts (gw), in which the size of the pumped storage for 40 gw. Visible, speed up the development of pumped-storage power station construction is still one of the key direction of electric power development in our country, the state support for the construction of pumped storage power will continue to increase.

the hydropower development & other; Much starker choices-and graver consequences-in & throughout; Plan was to regional development planning, including north China, east China, central China, northeast China pumped storage power station construction scale more than 10 million kilowatts, in 2020, north China, east China, central China size will be more than 6. 5 million kilowatts.

in addition to pumping energy storage, lithium battery is also expected to rapid development. Lithium-ion battery production technology rapid progress, making lithium battery product cost reduction, will increase the competitiveness of the energy storage compared to other lithium battery energy storage technology, lithium battery market penetration gradually enhanced in the field of energy storage, will further promote the application of the market size increases correspondingly. By 2022, China li-ion battery energy storage output will increase to 13. 7 billion yuan.