21.   The bid by the U.S. geothermal energy producer is part of a string of U.K. utility takeovers by British and American companies.

22.   The energy budget indicated a clear change in direction, with research spending on solar, wind and geothermal energy and nuclear sources sliced nearly in half.

23.   Townsend and his brother later became involved in more business ventures, including selling blue-green algae as a nutritional supplement and marketing geothermal energy.

24.   Using natural-gas-fired turbines and geothermal energy, Calpine produces electricity that it sells to mainstream power grids.

25.   Windmills and geothermal energy, once considered hot prospects as alternative electricity sources, are falling out of favor.

26.   With few trees and natural resources besides geothermal energy, sheep, and fish, this is a place that has learned how to make do.

27.   Part of the extra revenues from the taxes would be used to ease income tax, and to fund alternative energy programs, including windmills and geothermal energy.

28.   Also Thursday, a judge allowed geothermal energy supplier CalEnergy to suspend delivery to Edison.

29.   Despite its abundance, geothermal energy has so far failed to capture much of the electricity market.

30.   Finnsson said the main difference between Iceland and China was the depth and temperature of the geothermal energy.