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If the final energy delivered for consumption is E and the EROI equals R, then the net energy available is E-E/R. The percentage available energy is 100-100/R. For R>10 more than 90% is available but for R=2 only 50% and for R=1 none. This steep decline is known as the net energy cliff. [28]
The state with the lowest per capita energy use is Rhode Island, at 161 million BTU per year, and the highest is Louisiana, at 908 million BTU per year. Energy use and prices often have an inverse relationship; Hawaii uses some of the least energy per capita but pays the highest price on average, while Louisiana pays the least on average. [75]
Losing or gaining weight affects the energy expenditure. Reduced energy expenditure after weight loss can be a major challenge for people seeking to avoid weight regain after weight loss. [4] It is controversial whether losing weight causes a decrease in energy expenditure greater than expected by the loss of adipose tissue and fat-free mass ...
Energy usage in transportation and residential sectors (about half of U.S. energy consumption) is largely controlled by individual domestic consumers. Commercial and industrial energy expenditures are determined by businesses entities and other facility managers. National energy policy has a significant effect on energy usage across all four ...
Total daily energy expenditure, or TDEE, is just jargon for what most of us know as metabolism. In simpler terms, it’s about understanding how your body burns energy throughout the day.
International Energy Agency: 2011 The End of Oil: On the Edge of a Perilous New World: Paul Roberts: 2004 Energy and American Society: Thirteen Myths: Benjamin K. Sovacool and Marilyn A. Brown (editors) 2007 Energy Autonomy: The Economic, Social & Technological Case for Renewable Energy: Hermann Scheer: 2007 Energy Technology Perspectives
Over two-thirds of the energy used by homes, offices, and other commercial businesses is electric, including electric losses. [95] [96] Most of the energy used in homes was for space heating (34%) and water heating (19%), much more than the amount used for space cooling (16%) and refrigeration (7%). [97]
The word energy derives from the Ancient Greek: ἐνέργεια, romanized: energeia, lit. 'activity, operation', [4] which possibly appears for the first time in the work of Aristotle in the 4th century BC. In contrast to the modern definition, energeia was a qualitative philosophical concept, broad enough to include ideas such as happiness ...