31.   Purchased separately from actual electricity, the credits will be bought from wind farms, hydroelectric dams and turbines fueled by landfill gases.

32.   Such operations are losing ground to cheaper and more efficient alternatives, like gas-fired power plants and wind farms.

33.   The Gray County wind farm in Kansas is a case in point.

34.   The Kansas Legislature, hoping to encourage the use of renewable resources, exempted wind farms from property taxes.

35.   The latest trend in Europe is to start building wind farms offshore, where there is more wind and fewer complaints that they clutter up the landscape.

36.   The organization arranges purchases of wind-powered electricity from three wind farms developed in the past two years in western Pennsylvania.

37.   The plants are typically small, independent power generators such as wind farms and solar projects.

38.   The price of building a wind farm exceeds that of other types of power plants.

39.   The Ukrainian wind farm will be located near the village of Donuzlav in Crimea, a region near the Black Sea.

40.   They will join more than a half-dozen existing West Texas wind farms.