An energy system is a system primarily designed to supply energy-services to end-users.[1]: 941 The intent behind energy systems is to minimise energy losses to a negligible level, as well as to ensure the efficient use of energy.[2] The IPCC Fifth Assessment Report defines an energy system as "all components related to the production, conversion, delivery, and use of energy".[3]: 1261
The first two definitions allow for demand-side measures, including daylighting, retrofitted building insulation, and passive solar building design, as well as socio-economic factors, such as aspects of energy demand management and remote work, while the third does not. Neither does the third account for the informal economy in traditional biomass that is significant in many developing countries.[4]
The analysis of energy systems thus spans the disciplines of engineering and economics.[5]: 1 Merging ideas from both areas to form a coherent description, particularly where macroeconomic dynamics are involved, is challenging.[6][7]
The concept of an energy system is evolving as new regulations, technologies, and practices enter into service – for example, emissions trading, the development of smart grids, and the greater use of energy demand management, respectively.
groscurth-etal-1995
was invoked but never defined (see the help page).allwood-etal-2014
was invoked but never defined (see the help page).van-ruijven-etal-2008
was invoked but never defined (see the help page).hoffman-and-wood-1976
was invoked but never defined (see the help page).boehringer-and-rutherford-2008
was invoked but never defined (see the help page).herbst-etal-2012
was invoked but never defined (see the help page).