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Cogeneration: a process that converts a fuel into both thermal and electrical energy. The thermal energy may be in the form of steam, hot water, or hot air, or any combination of the three. This term is becoming obsolete, and is gradually moving towards the "CHP" (combined heat and power) term. Also includes District Energy: "District energy systems produce steam, hot water or chilled water at a central plant and then pipe that energy out to buildings in the district."
This category is intended for science oriented site content. Please submit sites primarily selling products online to the most appropriate category within the Shopping branch as they will not be listed here.
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Training, conferences, seminars, and shows focused on the scientific aspects of energy production, transformation, use, or management.
This category is intended for science oriented site content. Please submit sites primarily selling products online to the most appropriate category within the Shopping branch as they will not be listed here.
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Energy conservation is the practice of increasing the efficiency of use of energy in order to achieve higher useful output for the same energy consumption. This may result in increase of national security, personal security, financial capital, human comfort and environmental value. Individuals and organizations that are direct consumers of energy may want to conserve energy in order to reduce energy costs and promote environmental values.
Sites about general manufacturing should be submitted to Industrial Goods and Services or related categories.
Please submit sites primarily selling products online to the most appropriate category within the Shopping branch as they will not be listed here.
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Category scope includes device technologies that are used to produce or transform energy. They include thermodynamic engines and turbines, electrical effect systems, chemical systems and solid state systems.
This category is intended for science oriented site content. Please submit sites primarily selling products online to the most appropriate category within the Shopping branch as they will not be listed here.
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Energy economics is a subfield of economics that focuses on energy relationships as the foundation of all other relationships. It is a subfield of ecological economics in that it assumes that food chains in ecology are directly analogous to energy supply chains in human industries.
Information on energy itself, but not primarily educational in nature and not dealing with teaching or learning, belongs in the main category on Energy, not under Education.

Web sites that offer information to students, educators or professionals primarily through products or classroom instruction should be considered for submission to Business/Education and Training/Technology. This includes sites that offer resources for professional licensing and registration.

Advanced degree programs should be considered for submission to other categories such as Science/Technology/Academia or Reference/Education/Colleges_and_Universities/.

Web sites that support the education process for energy science and technology, or other topics, should be considered for submission to other categories. For example, Science/Educational Resources/ or Business/Education and Training/Education.

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This category contains information and resources for the teaching and learning of various aspects of energy science and technology. Sites in this category try to teach or instruct about energy science and technology, though clear, easy-to-follow explanation or by example. Sites that include formatted curriculums and tools such as calculators or reference tables that support the learning process for energy science and technology can also be found in this category.
This category is intended for science oriented site content. Please submit sites primarily selling products online to the most appropriate category within the Shopping branch as they will not be listed here.
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Science (including social sciences applications) and technology related to electric power transmission and power generation, if not specific to a particular energy source.
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Fossil fuels, also known as mineral fuels, are hydrocarbon-containing natural resources such as coal, oil and natural gas. The utilization of fossil fuels has enabled large-scale industrial development and largely supplanted water driven mills, as well as the combustion of wood or peat for heat.
Sites about ground-source heat pump technology belong in the Heat Pumps category. This category is intended for science oriented site content. Please submit sites primarily selling products online to the most appropriate category within the Shopping branch as they will not be listed here.
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Geothermal energy is heat energy from deep in the earth. Heat is brought to the near-surface by thermal conduction and by intrusion into the earth's crust of molten magma originating from great depth. Ground water is heated to form hydrothermal resources -- naturally occurring hot water and steam. Use of hydrothermal energy is economic today at a number of high-grade sites. Hydrothermal resources are tapped by existing well-drilling and energy-conversion technology to generate electricity or to produce hot water for direct use.
This category is intended for science oriented site content. Please submit sites primarily selling products online to the most appropriate category within the Shopping branch as they will not be listed here.
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Hydrogen is the first element in the periodic table and is the smallest and lightest atom of all the elements. This category contains links related to research on hydrogen as an energy source and the development of hydrogen related devices by government, scientific and private researchers.
Sites expressing concerns about nuclear energy, stating opposition to nuclear energy or urging action against nuclear energy (e.g. activism) should be submitted to the Society/Issues/Environment/Nuclear category. Sites about nuclear fusion should be submitted to the Science/Physics/Nuclear/Fusion category.Sites about nuclear physics should be submitted to the Science/Physics/Nuclear category. Consulting companies should submit to Business/Industrial_Goods_and_Services/Engineering/Nuclear/Consulting.
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This category is related to the technological and safety aspects of the production of useful energy released by the fission of heavy nucleus.
In the nuclear fission process, the nucleus of an atom splits into two smaller atoms (fission products). This occurs naturally in radioactive elements (radioactive decay), but it can be induced artificially by making fissionable atoms absorb free neutrons.
This causes the nucleus to become unstable and makes it split apart. The fission process yields two smaller atoms, energy and several fast neutrons. Therefore, under certain conditions, the reaction can become self sustaining. This is called a chain reaction, or nuclear criticality.
A nuclear reactor is an apparatus in which nuclear fission chain reactions are initiated, controlled, and sustained at a steady rate.
This category is intended for science oriented site content. Please submit sites primarily selling products online to the most appropriate category within the Shopping branch as they will not be listed here.
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Organizations that are dealing with energy resources, energy utilization technologies, technology research and technical innovations, and analytical aspects of energy policy.
Individual titles are seldom listed here.
Journals, other series, and similar publications focused on energy science and technology.
This category is intended for non-commercial, scientific and educational references to renewable energy science and engineering (technology). Before submitting a site to this category or its subcategories, be sure to read the related descriptions. Failure to submit to the most specific and appropriate category can delay the consideration of your submission. Information on energy itself, but not primarily relating to renewable energy technologies, belongs in the main category on Science/ Technology/ Energy. Further, content for conferences, organizations and publications should be submitted to the appropriate category which can be found from the top level of Energy at Science/ Technology/ Energy. Some educational sites might be better listed in Kids_and_Teens/ School_Time/ Science/Environment/ Renewable_Energy/ or Science/ Technology/ Energy/ Education/. Please compare categories and choose the most appropriate for your submission. Commercial sites that have substantial scientific or non-commercial informational content might be listed here however, please review categories under Business for potentially more appropriate categories before you submit. See for example: Business/ Energy_and_Environment/ Renewable and the category description
This category contains non-commercial, scientific and educational references to renewable energy science and engineering (technology). Renewable energies are classified by the fact that they do not permanently deplete their sources of energy. Renewable energy sources capture their power from existing flows of energy, from on-going natural processes, such as biological processes, flowing water, sun and wind.
Please submit your site to the most appropriate category. Submitting to an incorrect category may delay review of your site.
Please submit only websites that have English language content to this category. If your site is in a language other than English, please submit it to the appropriate category of World.
Most research activities will either occur in academic departments or in research institutes (which may either be in universities or external). Both of these are included in this category.
This category is intended for science oriented site content. Please submit sites primarily selling products online to the most appropriate category within the Shopping branch as they will not be listed here.
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Please submit to an appropriate subcategory, if one is available. Otherwise, submit here. Failure to submit to the most specific appropriate category can delay the consideration of your submission.
For more information, please refer to the DMOZ Science FAQ.
Energy storage technologies help the grid (electric distribution system) handle peaks in demand. Generally these occur once or twice daily. When the energy storage is located near the load (a major city or industry) it can ameliorate problems with security or reliability of linear infrastructure. Storage helps economic dispatch by allowing more efficient power generators to charge energy for peak loads.
This category is intended for science oriented site content. Please submit sites primarily selling products online to the most appropriate category within the Shopping branch as they will not be listed here.
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Please submit to an appropriate subcategory, if one is available. Otherwise, submit here. Failure to submit to the most specific appropriate category can delay the consideration of your submission.
For more information, please refer to the DMOZ Science FAQ.
Information related to energy technology in transportation, including innovative propulsion methods, alternative energy sources, and means of improving energy efficiency in transport.
Submit here only sites that produce energy "for free". Sites that describe energy production from unproven sources or extract it by unproven methods should go to the Science/Technology/Energy/Unproven_Concepts category.
Category scope includes "free energy" concepts and inventions, descriptions of energy inventions that have not yet been successfully demonstrated, concept papers describing potential futuristic technologies that are unrelated to energy technologies now used, articles about energy inventions and R&D efforts that never lived up to the claims that were made for them, and energy technology ideas that are currently considered unorthodox. Many of the concepts described by sites in this category are generally considered to violate the second law of thermodynamics or other laws of physics. Other concepts described here may have merit, but have yet to be successfully demonstrated. Note that symlinks are provided to categories for Cold Fusion and Orgone Energy.

Please only submit sites here if they span more than one aspect of energy technology.  If the subject is specific to a field covered by another sub-category of Technology: Energy, such as Renewables, please submit there instead.

This category is for blogs, administered specifically to keep articles and comments on the topic of technological aspects of energy.

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Last update: Sunday, November 3, 2013 3:08:53 PM EST - edit