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An energy audit is an inspection and analysis of energy use and flows for energy conservation in a structure, process, or system intending to reduce energy input without negatively affecting output. Energy audits can determine specific opportunities for energy conservation and efficiency measures as well as determine cost-effective strategies. [2]
Spoons are used as a metaphor and visual representation for energy rationing. Spoon theory is a metaphor describing the amount of physical or mental energy that a person has available for daily activities and tasks, and how it can become limited. The term was coined in a 2003 essay by American writer Christine Miserandino.
Thomas Young, the first person to use the term "energy" in the modern sense. 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 ...
The raw energy resources include for example coal, unprocessed oil & gas, uranium. In comparison, the refined forms of energy include for example refined oil that becomes fuel and electricity. Energy resources may be used in various different ways, depending on the specific resource (e.g. coal), and intended end use (industrial, residential, etc.).
In the 19th and early 20th centuries, electricity was not part of the everyday life of many people, even in the industrialised Western world. The popular culture of the time accordingly often depicted it as a mysterious, quasi-magical force that can slay the living, revive the dead or otherwise bend the laws of nature.
Energy efficiency in transport – Discussing what form of transport is the most fuel efficient and economical. Electricity generation – Process of generating electrical power; Energy mix – Primary energy sources from which secondary energy for direct use is produced; Energy policy – How a government or business deals with energy
Efficient energy use, or energy efficiency, is the process of reducing the amount of energy required to provide products and services. There are many technologies and methods available that are more energy efficient than conventional systems.
According to eurostat as of 2021, households represented 27% of final energy consumption in the EU. The main use of energy by households was for heating their homes (64.4% of final energy consumption in the residential sector), with renewables accounting for more than a quarter (27%) of EU households space heating consumption. [3]