The Fengning Pumped Storage Power Station, the world's largest facility of its kind, has commenced full operations with the commissioning of its final variable-speed unit on December 31. On March 31, the second phase of the 100 MW/200 MWh energy storage station, a supporting project of the Ningxia Power's East NingxiaComposite Photovoltaic Base Project under CHN Energy, was successfully connected to the grid. This marks the completion and operation of the largest grid-forming. As of 2025, the largest power generating facility ever built is the Three Gorges Dam in China, completed in 2012. Let's crack open this technological treasure chest and see why even tech giants are taking notes. But size isn't the only story here – it's how these technological.