Zhangbei National Wind and PV Energy Storage and Transmission Project  |  Case Study

Hybrid Wind Power + Solar PV  Generation + Lithium-ion Battery Energy Storage:  216 MW

  1. As of completion in 2011, the Zhangbei National Energy Storage and Transmission Demonstration Project is the world’s first and, to date, only utility-scale hybrid renewable energy plant to integrate utility-scale wind and solar PV generation with large scale lithium-ion battery energy storage.

  1. The 216 MW Zhangbei National Energy Storage and Transmission Demonstration Project was put into operation in 2011 and includes wind turbine generation (100 MW), solar PV generation (40 MW), battery power storage (20 MW to 36 MW), and intelligent transmission technologies.  The project is unique.  While there are other hybrid renewable energy system power plants of similar scale in service today, there are no power plants as aggressively reinforced with battery energy storage.  This State Grid of China (SGCC) project serves serves as a demonstration of a stable solution for transferring large amounts of predictable, dependable, and dispatchable renewable electricity to the national transmission grid on an unprecedented scale.

  2. While integration of solar PV and wind generation alone significantly smoothes and balances power production, it is the use of large scale power storage and intelligent, smart grid transmission that truly enables the Zhangbei power plant to fully meet power demand.  Battery manufacturer BYD has indicated that the use of large scale battery storage can improve renewable energy efficiencies by 5% to 10%. BYD’s lithium-ion iron-phosphate battery shares many advantages and disadvantages with other lithium-ion chemistries, however, there are significant differences:   Lithium-ion iron-phosphate chemistry offers a longer cycle life than other lithium-ion approaches; the use of phosphates avoids the cost and environmental concerns of the use of cobalt, particularly concerns about cobalt entering the environment through improper disposal:  and these iron-phosphate batteries have higher current or peak-power ratings than typical lithium-ion technologies.

  3. Project Development

  4. The Zhangbei project was developed and is owned by the State Grid Corporation of China (SGCC), China’s largest utilities company.  Among the many remarkable projects developed by SGCC are the Jingdongnan-Nanyang-Jingmen 1,000 kV UHV AC and Xiangjiaba-Shanghai 800 kV UHV DC transmission projects.  These two projects are a clear demonstration of SGCC’s commitment to the development of a super + smart grid, using ultra-high voltage transmission to achieve Chinese renewable energy development goals. 

  5. SGCC chose the BYD Company’s lithium-ion iron-phosphate battery technology because of it’s superior service life (projected to be 20-years) and superior peak shaving and load leveling charge and discharge methodologies.  The BYD Company is a large Chinese manufacturer of automobiles and rechargeable batteries.  In 2011 BYD completed the 12 MW grid-connected Shenzhen Baoqing Battery Energy Storage Station, one of the largest battery energy storage facilities in the world. 

  6. Wind turbines for the project are being supplied by the XJ Group, a company owned by SGCC and one of China’s largest manufacturers of power equipment and transmission and distribution technologies.  The Zhangbei project includes two integrated installations, the Xiaodongliang and Mengjialiang wind farms. 

  7. References

  8. China Tech Gadget:  China to Complete World’s First 4 in 1 Hybrid Green Power Station


  10. The Smart Grid Times:  China’s State Grid and BYD Launch World’s largest Battery Energy Storage Station


  12. CSP Today:  China:  Banking on renewable energy


  14. Wind Power Intelligencer:  CHINA:  Wind Turbines online at Zhangbei National Demonstration Project



  1. Zhangbei County, Hebei Province, China

Project Status:

  1. Commissioned: 2011

Rated Capacity:

  1. Total:  216 MW

  2. Wind:  100 MW

  3. Solar PV:  40 MW

  4. Battery Storage:  20 MW (to expand to 36 MW)

Annual Production:

  1. TBD

Capacity Factor:

  1. TBD

Carbon Offset:

  1. TBD

Energy Storage Cycle Efficiency:

  1. TBD


  1. State Grid Corporation of China (SGCC)


  1. North China Grid Company, Ltd.

Generation Offtaker:

  1. State Grid Corporation of China (SGCC)

Generation Technology:

  1. Wind:  XJ Group 2 MW wind turbines

  2. Solar PV:  Unknown

  3. Battery Storage:  BYD Company lithium-ion iron-phosphate batteries


  1. $1.88 billion (first phase investment:  $550 million)