Revisiting energy efficiency fundamentals

Pérez-Lombard, Luis; Ortiz, José; Velázquez, David

doi:10.1007/s12053-012-9180-8

Cited by 84 publications

(54 citation statements)

References 20 publications

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“…In general terms, energy efficiency can be understood as the ratio between service outputs (result) and the energy input required to provide it [56]. In this paper, we follow the definition from the U.S. Energy Information Administration (EIA) [4], which states that energy efficiency is "to use technology that requires less energy to perform the same function".…”

Section: Energy Efficiency-definitions and Measures Of The Dependent mentioning

confidence: 99%

Closing the Energy Efficiency Gap—A Systematic Review of Empirical Articles on Drivers to Energy Efficiency in Manufacturing Firms

Solnørdal

Foss

2018

Energies

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Abstract:Research has identified an extensive potential for energy efficiency within the manufacturing sector, which is responsible for a substantial share of global energy consumption and greenhouse gas emissions. The purpose of this study is to enhance the knowledge of vital drivers for energy efficiency in this sector by providing a critical and systematic review of the empirical literature on drivers to energy efficiency in manufacturing firms at the firm level. The systematic literature review (SLR) is based on peer-reviewed articles published between 1998 and 2016. The findings reveal that organizational and economic drivers are, from the firms' perspective, the most prominent stimulus for energy efficiency and that they consider policy instruments and market drivers to be less important. Secondly, firm size has a positive effect on the firms' energy efficiency, while the literature is inconclusive considering sectorial impact. Third, the studies are mainly conducted in the US and Western European countries, despite the fact that future increase in energy demand is expected outside these regions. These findings imply a potential mismatch between energy policy-makers' and firm mangers' understanding of which factors are most important for achieving increased energy efficiency in manufacturing firms. Energy policies should target the stimulation of management, competence, and organizational structure in addition to the provision of economic incentives. Further understanding about which and how internal resources, organizational capabilities, and management practices impact energy efficiency in manufacturing firms is needed. Future energy efficiency scholars should advance our theoretical understanding of the relationship between energy efficiency improvements in firms, the related change processes, and the drivers that affect these processes.

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Section: Energy Efficiency-definitions and Measures Of The Dependent mentioning

confidence: 99%

Closing the Energy Efficiency Gap—A Systematic Review of Empirical Articles on Drivers to Energy Efficiency in Manufacturing Firms

Solnørdal

Foss

2018

Energies

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“…Energy efficiency relates to the ratio between energy input (input resources) and the services provided (output) (Pérez-Lombard et al, 2013). Improved energy efficiency usually means using less energy while still providing the same service output; however, improved energy efficiency can also mean maintaining the amount of energy input while increasing the services provided (Ryan and Campbell, 2012).…”

Section: Energy Efficiencymentioning

confidence: 99%

System studies of the use of industrial excess heat

Viklund¹

2015

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Energy, materials, and by-products, can be exchanged between companies, having positive effects in the form of improved resource efficiency, environmental benefits, and economic gains. One such energy stream that can be exchanged is excess heat, that is, heat generated as a by-product during, for example, industrial production. Excess heat will continue to play an important role in efforts to reduce greenhouse gas (GHG) emissions and improve energy efficiency. Using excess heat is therefore currently emphasized in EU policy as a way to reach EU climate targets.This thesis examines the opportunities of manufacturing industries to use industrial excess heat, and how doing so can positively affect industry, society, and the climate. Since different parts of the energy system are entangled, there is an inherent complexity in studying these systems and introducing excess heat in one part of the energy system may influence other parts of the system. This analysis has accordingly been conducted by combining studies from various perspectives, by applying both quantitative and qualitative methods and covering a broad range of aspects, such as technical possibilities as well as climate, policy, economics, and resource aspects.The results identify several opportunities and benefits accruing from excess heat use. Although excess heat is currently partly used as a thermal resource in district heating in Sweden, this thesis demonstrates that significant untapped excess heat is still available. The mapping conducted in the appended studies identifies excess heat in different energy carriers, mainly low-temperature water. Analysis of excess heat use in different recovery options demonstrated greater output when using excess heat in district heating than electricity production. Optimizing the trade-offs in excess heat used in a district heating network, heatdriven cooling, and electricity production under different energy market conditions while minimizing the system cost, however, indicated that the attractiveness of excess heat in district heating depends on the type of heat production in the system. Viewing excess heat as a low-cost energy source also makes it economically interesting, and creates opportunities to invest in excess heat-recovery solutions. Excess heat is often viewed as CO 2 neutral since unused excess heat may be regarded as wasted energy. The GHG mitigation potential of using excess heat, however, was found to be ambiguous. The appended studies demonstrate that using excess heat for electricity production or for applications that reduce the use of electricity reduces GHG emissions. The effects of using excess heat in district heating, on the vi other hand, depend on the energy market development, for example, the marginal electricity production and marginal use of biomass, and on the type of district heating system replaced. The interviews performed reveal that energy policy does influence excess heat use, being demonstrated both to promote and discourage excess heat use. Beyond national energy polic...

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“…Thus, the improvement of energy efficiency has become, in its own right, one of the main objectives of energy policies (Pérez Lombard, et al, 2013). Within the sphere of the European Unión (EU), the Europe 2020 Strategy (EC 2010) for a smart, sustainable and inclusive growth, set, among its objectives, a reduction of 20% of the primary energy consumption trend anticipated for 2020.…”

Section: Introductionmentioning

confidence: 99%

LMDI decomposition analysis of energy consumption in Andalusia (Spain) during 2003–2012: the energy efficiency policy implications

Carmona

Collado

2015

Energy Efficiency

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ABSTRACT:The LMDI decomposition analysis of the evolution of the final energy consumption in Andalusia during the period 2003-2011, leads to the conclusion that the increase of final energy consumption (3%) produced in this period was due to economic growth (83.4%) and the decrease in energy efficiency (16.6%). Industry was the sector that most increased energy efficiency (1.9%), while that of the energy sector reduced by 2.6%.

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Revisiting energy efficiency fundamentals

Cited by 84 publications

References 20 publications

Closing the Energy Efficiency Gap—A Systematic Review of Empirical Articles on Drivers to Energy Efficiency in Manufacturing Firms

Closing the Energy Efficiency Gap—A Systematic Review of Empirical Articles on Drivers to Energy Efficiency in Manufacturing Firms

System studies of the use of industrial excess heat

LMDI decomposition analysis of energy consumption in Andalusia (Spain) during 2003–2012: the energy efficiency policy implications

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