Reviewed are technological problems faced in energy production including locating, recovering, developing, storing, and distributing energy in clean, convenient, economical, and environmentally satisfactory manners. The energy resources of coal, oil, natural gas, hydroelectric power, nuclear energy, solar energy, geothermal energy, winds, tides, fuel cells, magnetohydrodynamics, hydrogen, and various storage devices are discussed. Energy transmission and diagrams illustrating energy demands, electrical generation capacity, and energy converter efficiencies are included. (SL)