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Summary Of: EROEI
When the EROEI of a resource is equal to or lower than 1... while EROEI measures the ratio or efficiency of the process... even point happens with an EROEI of 1 or a net energy gain of 0... A society will generally exploit the highest available EROEI energy sources first... progressively lower EROEI sources are then used as the higher... the EROEI of wind energy in North America and Europe is about 20... when the EROEI of the main sources of energy for an economy fall energy becomes more difficult to... Therefore the EROEI gains importance when comparing energy alternatives... as the EROEI falls an increasing proportion of the economy has to be devoted to obtaining the same... demonstrates that a falling EROEI in the Later Roman Empire was one of the reasons for the collapse of the... he suggests that EROEI analysis provides a basis for the analysis of the rise and fall of civilisations... as EROEI began to fall... suggests that diminishing returns of the EROEI is a chief cause of the collapse of complex societies... Falling EROEI due to depletion of non... Measuring the EROEI of a single physical process is unambiguous... which activities should be included in measuring the EROEI of an economic process... This might have an EROEI of less than one... Some believe this means the EROEI measure should be refined further... EROEI is only one consideration and may not be the most important one in energy policy... World Nuclear Association study on EROEI with assumptions listed... Encyclodia Page On: EROEI
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