21. They produce low-sulfur coal primarily used to fire electric plants . 22. The electric plant had recently burned and electricity was provided intermittently by a generator. 23. Lured West again, in 1884 he built the first electric plant for San Francisco. 24. A more efficient way would be to operate the hydro-electric plant intermittently, he said. 25. Czech firms are also to participate in building several hydroelectric electric plants in Tajikistan. 26. Those pollutants are produced by coal-fired electric plants and automobiles. 27. The facility opened as a Western Electric plant in 1957. 28. Studies point to Mexican coal-fired electric plants , but those studies call for more studies. 29. For instance, in 1980, electric plants nationwide put out 18 million tons of emissions. 30. But the new electric plant proposals also have drawn flak.
