Construction is nearly complete on the 71-storey Pearl River Tower in Guangzhou, China, ahead of its expected unveiling later this year.
Designed by the US-based practice Skidmore, Owings & Merrill, the building is being built for CNTC Guangdong Tobacco Corporation.
The building is located on a 2.3-million-square-foot site, and is touted as the world's greenest and tallest zero-energy building.
Steel and reinforced concrete are used for the building's structural systems, which are also equipped with wind turbines.
The wind turbines are fed from funnel-like openings in the façade and are supported on floor slabs within the opening zones.
Its shape is optimised to take advantage of local solar and wind patterns as well as seismic loads, the company said.
The green structure incorporates many sustainable features such as the presence of solar panels, a double-skin curtain wall, chilled ceiling system, an under-floor ventilation system and daylight harvesting.