In 1957 Soviet authorities created a republic-level directorate for power generation, and in 1966 Turkmenistan entered the first phase of connecting its remote regions to the regional Central Asian electrical grid. By 1979 all rural areas of Turkmenistan were brought on line. Construction of the Mary thermal power plant began in 1969, and by 1987 the eighth and final generator block was completed, bringing the plant to its design capacity of 1.686 gigawatts.  In 1998 Turkmenenergo commissioned its first gas-turbine power plant, using GE turbines.