The new code demands that projects use only turbines with low-voltage ride-through (LVRT) capability. This technology, which keeps turbines operating even after a large drop in voltage, has become increasingly vital following a series of major outages at wind farms this year.

On 17 April, 702 turbines tripped off the grid at a wind farm in Jiuquan, Gansu province, after two box transformers broke down, causing a dip in voltage.