The GRES-2 Power Station (or Power Station Ekibastuz) is a coal-fueled power generating station in Ekibastuz, Kazakhstan. It is located close to Solnechny and to Shandaksor. The ashes of the station are dumped into Karasor, a nearby lake.[1] As of 2025, the GRES-1 and GRES-2 power stations in Ekibastuz help to generate over 40% of Kazakhstan's electricity output.[2]
Description
GRES-2, commissioned in 1987, has an installed capacity of 1,000 MWe and has the world's tallest flue-gas stack at 419.7 m tall. The reinforced concrete chimney is about 40 m 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. The extension of the line to