meters were: In June 2021 Turkmenistan and China announced award of a tender to CNPC Chuanging Drilling Engineering Company, Ltd. for drilling gas wells in the Galkynysh gas field in return for payment in kind of 17 bcm of natural gas delivered over a period of three years. The first of these wells was commissioned in January 2023. Power generation See also Turkmenistan / Energy In 2019, total electrical energy generation in Turkmenistan reportedly totalled 22,521.6 million kilowatt-hours (22.52 terawatt-hours). As of 2013, Turkmenistan had 10 electrical power plants equipped with 32 turbines, including 14 steam-driven, 15 gas powered, and 3 hydroelectric. Power output in 2011 was 18.27 billion kWh, of which 2.5 billion kWh was exported. The Asian Development Bank reported in October 2018,Turkmenenergo, the State Energy Corporation is the vertically integrated power utility in the country. In 2017, it produced more than 23 TWh of electricity, exporting 15% of that to neighboring countries. New power plants have been constructed in Mary, Ahal province, and in Çärjew District of Lebap province. The Mary-3 combined cycle power plant, built by Çalık Holding with GE turbines, commissioned in 2018, produces 1.574 gigawatts of electrical power and is specifically intended to support expanded exports of electricity to Afghanistan and Pakistan. The Zerger power plant built by Sumitomo, Mitsubishi, Hitachi, and Rönesans Holding in Çärjew District has a design capacity of 432 megawatts from three 144-megawatt gas turbines and was commissioned in September 2021. It is also primarily intended for export of electricity. The Zerger plant uses natural gas from the Üçajy Gas Field (), delivered via a 125-km high-pressure pipeline. The Ahal power plant, with capacity of 650 megawatts, was constructed to power the city of Ashgabat and in particular the Olympic Village. The Derweze State Electrical Power Station (), a 504.4 megawatt power plant built by Çalık Enerji in 2015, is located near Ovadandepe. A "national grid strengthening project" with support from the Asian Development Bank is underway, which will build four new power substations and add direct high-voltage lines, a 500-kilovolt line between Balkan province and Dashoguz, and a 200-kilovolt line between Buzmeyin and Balkanabat. The intention is to create an "interconnected national transmission grid to improve reliability and energy efficiency..." Minerals The following table is from Mineral Industry of Turkmenistan published by the United States Geological Survey, an agency of the US government, and is thus in the public