When will storage energy back BYD?

In the “Future Village” built by Wang Chuanfu at BYD headquarters, the core is a cabinet-type energy storage station that is slightly larger than a refrigerator. The solar energy installations on the roof and the energy generated by the 78 wind turbines on the side of the house all undergo energy storage and conversion via energy storage power stations to meet the entire power demand in buildings and achieve zero carbon emissions.

The equipment in the "Future Village" - everything from solar generators to wind turbines, from energy storage plants to water purifiers, as well as the building itself and the silicon materials needed to produce solar panels, are all manufactured by BYD.

Here, Wang Chuanfu's "Silicon Iron Strategy" is at a glance.

"Solar energy is the energy that human beings can continuously rely on, but like wind energy, solar energy has a big drawback: it is very unbalanced. Solar energy is hard to use if people do not study energy storage. In silicon-iron-iron strategy, silicon is silicon. Solar energy is absorbed, and iron batteries are used for energy storage. Once the “ferrosilicon strategy” is implemented, it can make energy sustainable.” A few days ago, BYD President Wang Chuanfu introduced to the author, although due to the PV industry downturn in 2011, BYD is reducing photovoltaic power. The scale of the industry, but the "Iron Strategy" has been prepared to send force.

The "Iron Strategy" mentioned by Wang Chuanfu, in addition to building energy storage power stations in Shenzhen and China Southern Power Grid, has been launched in the first phase of the National Wind Energy Storage Demonstration Project jointly launched by the Ministry of Finance, the Ministry of Science and Technology, and the State Grid Corporation of China. The first 2MW storage unit of BYD's 6MW storage power station was successfully put into operation.

It is understood that the total investment of the demonstration project is nearly 12 billion yuan, and the total investment for the first phase is about 3.3 billion yuan, including 100MW wind power generation, 50MW solar photovoltaic power generation and 20MW chemical energy storage. The energy storage system consists of 5 sets, of which 1 set is The flow battery system, with a specification of 2MW×4h, was supplied by Pu-Energy. The other four sets were lithium iron phosphate battery systems, which were provided by BYD, ATL, CNAC Lithium Battery and Wanxiang.

BYD's sources told the author that this indicates that the domestic energy storage system has emerged mainstream solutions for lithium-ion batteries and sodium-sulfur batteries and flow batteries.

"This demonstration project is equivalent to a model project and mainly provides basis for the country to formulate relevant policies." Wang Chuanfu also said.

At present, the core bottleneck of instability and intermittent occurrence of new energy sources such as wind energy and solar energy is energy storage systems. At present, most domestic energy storage power stations use two technologies, namely lithium iron phosphate batteries and flow batteries.

BYD, as a representative enterprise in the domestic lithium iron phosphate battery industry, has adopted the lithium iron phosphate battery technology as a national demonstration project for wind energy storage and transportation. BYD said its energy storage system solution can increase the conversion efficiency of renewable energy by 5% to 10%.

Behind the country’s huge investment in wind and solar storage demonstration projects is the urgent need for large-scale grid-connected power generation with the wind and solar power generation. This is accompanied by the development of the domestic energy storage industry.

According to Xia Lei, an expert from Asian Chemicals Consulting Company, Guodian Power has established a special agency to study how to achieve smooth access to wind power. The research result is that the energy storage capacity should be allocated to 20% to 30% of the installed capacity of wind power. If calculated by the cumulative installed capacity of domestic wind turbines at 41827 MW at the end of 2010, only one wind power sector in China's energy storage industry will have a potential market of 8365MW to 12548MW.

The blueprint seems to have begun to depict, but based on technology, cost bottlenecks, and uncertain policy factors, when storage power stations can vigorously back BYD is still a problem to be solved.