Lithium battery energy storage power stations are the main energy source,
and many energy storage technologies are still being explored. The main function
of lithium battery energy storage power station is to stabilize the operation of
the power grid and ensure the security of the power grid. Its functions include
grid peak regulation, frequency regulation and voltage regulation, replacing
some peak regulation power plants, frequency regulation units, rotating backup,
accident backup, etc. As an emerging field, lithium battery energy storage has
developed rapidly around the world in recent years.
1. Lithium batteries will start the construction of large-scale energy
storage power stations in the future
The value of lithium battery energy storage in terms of environmental
protection is mainly reflected in its matching with renewable energy power
generation. It can significantly transform the energy structure and reduce the
use of fossil energy such as coal power, thus achieving the purpose of reducing
carbon dioxide emissions. Although the cost of lithium battery energy storage
power stations is twice as high as that of lead-acid batteries, this is not a
reason to abandon lithium batteries. Different application scenarios have
different requirements for energy storage power and capacity, and various energy
storage technologies have their suitable application fields.
On July 18, my country's first 100,000-kilowatt battery energy storage
power station was officially connected to the grid and put into operation in
Zhenjiang, Jiangsu Province, ushering in a new stage of commercial operation of
my country's large-scale battery energy storage power stations. my country's new
lithium-ion batteries have met the safety requirements such as high temperature
resistance and non-explosion required for commercial operation, which has
provided technical support for the construction of large-scale battery energy
storage power stations. Moreover, it is expected that the cost of lithium
batteries will drop to 0.25 yuan per kilowatt-hour in the future.
The one-time investment in lithium battery energy storage systems is much
higher than that of lead-acid batteries, and lithium-ion battery technology has
advanced rapidly and has a good industrial foundation. It is gradually
penetrating into the fields of decentralized energy storage and large-scale
energy storage.
2. Demonstration projects explore business models
Since June this year, news about grid energy storage bidding, construction,
and grid connection have been coming from Henan, Jiangsu, Fujian, Guangdong,
Qinghai, Inner Mongolia and other places, indicating that my country's energy
storage market is constantly expanding.
In fact, the above-mentioned projects are only part of this year’s “energy
storage craze”. In these new projects, the supporting energy storage systems are
all lithium batteries. The many demonstration applications of lithium battery
energy storage power stations are constantly exploring the business model of
energy storage in centralized renewable energy grid connection and grid-side
applications.
The projects with current economic value lie in small user-side
applications. Information provided to reporters by the Zhongguancun Energy
Storage Industry Technology Alliance shows that when industrial and commercial
users install energy storage systems, they can save capacity electricity bills
in areas with large peak-to-valley electricity price differences; in areas with
more flexible capacity-based electricity fee assessment rules, they can also
save capacity electricity bills. Save capacity electricity bills for users.
Relative to the income, the cost of lithium battery energy storage power
stations is still relatively high.
3. Many energy storage technologies are still being explored
In fact, the technical route for energy storage is not single. my country
is actively developing a variety of energy storage technologies. In 2050, my
country's total installed capacity will reach 50 billion kilowatts (KW).
Adjusting the balance of supply and demand according to scale, the capacity of
energy storage will reach 400 million KW. At present, lithium-ion batteries and
lead-carbon batteries are the main ones, supplemented by compressed air energy
storage, flywheel energy storage, supercapacitors, flow batteries and other
technical routes. Different energy storage technology routes can basically meet
the needs of different application scenarios. .
Liquid flow, lithium batteries, and other battery energy storage
technologies are all in the stage of commercialization exploration and
transformation. In fact, they are not elementary or laboratory concepts. Huang
Mianyan said, "The all-vanadium redox flow battery has the characteristics of
safety, longevity, cyclability, and the power module and capacitance module can
be configured independently."
4. Prospects and expectations of China’s lithium battery energy storage
market
① New energy power generation supporting and power auxiliary services will
be the largest energy storage market;
As the world's largest power application market, China has a lot of room
for the development of renewable energy. We have reason to believe that China
will become the world's largest battery energy storage market in the near
future. At the same time, as the power market continues to open up, power
auxiliary services will also provide a broad market space for battery energy
storage. In this direction, European and American countries have set an example
for us.
②The pace of energy structure adjustment can be larger;
As mentioned earlier, my country's power supply structure is still very
unreasonable. The high proportion of coal power restricts the pace of
development and utilization of renewable energy and also brings a lot of
inconvenience to people's lives;
③The pace of opening up the power market can be faster;
④The energy storage subsidy policy must be implemented as soon as
possible.
At present, lithium battery energy storage power stations are the main
energy source, and many energy storage technologies are still being explored. In
the power grid, as long as the scale is large enough, lithium battery energy
storage power stations are undoubtedly one of the best dispatch resources.
Therefore, we must stand at the height of the national energy strategy and
carefully study and evaluate the full value and significance of the battery
energy storage system in order to maximize its benefits in the development of
the national economy. We believe and look forward to the early arrival of the
world's largest energy storage market!
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