The GRES-2 Power Station (or Power Station Ekibastuz) is a coal-fueled power generating station in Ekibastuz, Kazakhstan. GRES-2, commissioned in 1987, has installed capacity of 1,000 MWe and has the world's tallest flue gas stack at 419.7 metres (1,377 ft) high.
The reinforced concrete chimney is about 38 metres (125 ft) taller than the Inco Superstack in Sudbury, Ontario, Canada. It is the tallest chimney ever built.
The power station is the start of the Powerline Ekibastuz–Kokshetau and uses a transmission voltage of 1,150 kVAC, the highest transmission voltage in the world. About 3/4 of the energy produced by GRES-2 is exported to Russia.
According to en.wikipedia