China Southern Power Grid and BYD Partner for Grid Energy Storage Solution

SHENZHEN, PRC – September 27, 2010, BYD signed a contract with China Southern Power Grid (CSPG) for a large-scale, grid-connected, 3MW×4h energy storage station (ESS) after the contract with China’s Electric Power Research Institute (CEPRI) for a 1MW energy storage station (ESS) recently. BYD is delivering the World’s first megawatt-level, environmentally-friendly, iron-phosphate (Fe) battery storage stations for commercial use. With this installation, BYD will lead the World in installed battery-energy-storage systems and is helping to lead what many call "a new energy revolution in China".

"BYD is a young and promising company experiencing dynamic growth," Buffett said at the ceremony. "BYD will play a leading role in the future."

This 3MW×4h ESS has begun construction in Longgang District, Shenzhen and will be finished in a staggering, 3-months-time, by December 2010. BYD is cooperating with one of China’s big two grids Southern Grid to promote the rapid development of environmentally-sound, energy storage technologies in China.

This BYD/ CSG ESS is tied to the Biling 110 kilo-volt (KV) substation on 10 KV side of the Shenzhen-Guangdong electricity grid. The whole system consists of a BYD Fe battery, BMS (Battery Management System), PCS (Power Conversion System) and an energy storage station monitoring system to ensure the most effective utilization.

CSPG Officials stated, "The primary function of this system is peak-shifting and off-peak grid utilization, however, BYD’s technology also gives us great flexibility for auxiliary functions such as system back-up power and power-quality functions like voltage and reactive power compensation." The ESS will discharge at the grid’s peak time (day-time peaks) and charge at the grid’s lowest-usage-periods (i.e. night-time). The charge and discharge power of battery storage system can fluctuate according to the loading of the Biling 110KV substation to manage the loading change.

About BYD/CSPG Energy Storage Station

The BYD/CSPG battery storage station adopts the Fe battery provided by BYD, and it is the core technology of the energy storage system. Currently, BYD already has an automatic production line for the mass production of Fe battery.

Advantage of BYD’s Fe Batteries

Safety: The Fe battery has been tested under extreme conditions such as high temperature, high pressure, and heavy crushing and has been proven to have excellent safety performance.

Low cost: The cost of Fe batteries is far lower than that of Co batteries owing to the far lower material cost of Ferrous compared with cobalt;

Long cycling life: At room temperature, the cycle life of BYD’s Fe batteries is up to 4000 cycles at 100% DOD and 75% capacity retention rate (charge and discharge both at 1C). The battery life is up to 10 years.

Environment friendly: There is no pollution during the production and use of BYD’s Fe batteries.

Contacts: BYD Overseas PR

Email: bydpr@byd.com

Tel: +86 0755-89888888 ext. 62527