Energy technology covers a broad range of technical fields, as it could be understood to encompass any form of production and use of energy in the society. The energy sector focuses on developing systems for the production, transmission, distribution and use of energy. It is also the study of efficiency and safety of these systems and their economic and environmental impacts. Energy technology includes, for example, heating, plumbing and ventilation engineering, power plant engineering and wind power technology. The importance of wind power, in particular, has grown enormously during the past few years, and it has become a means for producing electricity that is being developed on a continuing basis. Compared to the 1990s, the production of wind power has grown by about 25-30% per year. Due to the rise of environmental awareness, alternative forms of energy are being studied more and more. This is reflected in the number of energy technology inventions.