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China’s State Grid and BYD launch 36 MWh battery system for grid energy storage

BYD and the State Grid Corporation of China (SGCC) have finished construction on what may be the world’s largest battery energy storage station. This large utility-scale project, located in Zhangbei, Hebei Province, combines 140 MW of renewable energy generation (both wind and solar), 36 MWh of energy storage and a smart power transmission system.

While there are renewable generation systems of this scale in service today, there are no battery systems of this size, the partners noted. The State Grid system is demonstrating a stable solution for transferring vast amounts of renewable electricity safely to the grid on an unprecedented scale. Although BYD manufactures 1GW of solar panels annually, their role in this project was primarily providing energy storage batteries in arrays larger than a football field.

SGCC chose BYD’s Iron-Phosphate battery technology because of its superior service life (more than 20 years) and also used BYD’s “peak shaving & load leveling” charge and discharge methodologies. BYD’s announcement on 30 September 30 2011, “China’s Largest and First Environmentally-friendly Battery Storage Station,” was the first of many MW-level cooperative projects with China’s Southern Power Grid (CSG). This new project with the State Grid has outpaced other grid projects in China and, though independently designed by SGCC, is part of the national “Golden Sun” program. The first phase investment with 100 MW of Wind, 40MW of Solar and 36MWh of Battery is worth more than US$500 million (~3.3 billion RMB).

The large-scale implementation of clean and green energy, such as wind and solar power, can only be realized when the technical difficulties of this new energy application in the utility system are resolved. This State Grid project demonstrates a solution and will be the model of development for China’s new energy resources.

—Xiu Binglin, Deputy Director of the National Energy Administration



140 MW of renewable energy generation (both wind and solar), 36 MWh of energy storage and a smart power transmission system should provide a great deal of practical renewable energy operating information.


Who said that BYD could not build large batteries? That would be almost enough for a large ship equipped with xxxx solar panels and adapted wind mills?

Vitaly Vinogradov

Nice. But 36MWh in terms of LiIon batteries translates to only ~1000 battery packs for EVs...

It would be much better to sell millions EVs and have national V2G technology implemented. After all, cars not used every day(holidays trips etc), when used they not driven for whole 24h, and most of the day you won't use 90% of the whole range, leaving margin of capacity that could be used for V2G...


Vitaly, why should this be either/or? LiIon and Iron-Phosphate use different resources so you could have both energy storage stations AND electric cars/V2G.

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