Showing papers by "Steve Sorrell published in 2020"

The limits of energy sufficiency: A review of the evidence for rebound effects and negative spillovers from behavioural change

Abstract: ‘Energy sufficiency’ involves reducing consumption of energy services in order to minimise the associated environmental impacts. This may either be through individual actions, such as reducing car travel, or through reducing working time, income and aggregate consumption (‘downshifting’). However, the environmental benefits of both strategies may be less than anticipated. First, people may save money that they can spend on other goods and services that also require energy to provide (rebounds). Second, people may feel they have ‘done her bit’ for the environment and can spend time and money on more energy-intensive goods and activities (spillovers). Third, people may save time that they can spend on other activities that also require energy to participate in (time-use rebounds). This paper reviews the current state of knowledge on rebounds and spillovers from sufficiency actions, and on time-use rebounds from downshifting. It concludes that: first, rebound effects can erode a significant proportion of the anticipated energy and emission savings from sufficiency actions; second, that such actions appear to have a very limited influence on aggregate energy use and emissions; and third, that downshifting should reduce energy use and emissions, but by proportionately less than the reduction in working hours and income.

Rebound effects for household energy services in the UK

Abstract: This study estimates the combined direct and indirect rebound effects from energy efficiency improvements in the delivery of six energy services to UK households, namely: heating; lighting; cooking; refrigeration and clothes washing; entertainment and computing; and private vehicle travel. We use a unique database on the price and quantity demanded of these energy services over the past half century. We estimate a two-stage almost ideal demand system for household expenditure, using these energy services as expenditure categories. We estimate rebound effects in terms of carbon emissions and only include the ‘direct’ emissions associated with energy consumption. Our results suggest direct rebound effects of 70% for heating, 54% for private vehicle travel and ~90% for the other energy services. However, these effects are offset by negative indirect rebound effects – that is, indirect rebounds contribute additional emission savings. As a result, our estimates of combined rebound effects are generally smaller, namely 54% for lighting, 55% for heating, 41% for refrigeration and clothes washing, -12% for entertainment and computing, 44% for cooking and 69% for vehicle travel. We also find some evidence that rebound effects have declined over time. We provide some important caveats to these results, and indicate priorities for future research.

Energy Efficiency: What has it Delivered in the Last 40 Years?

Abstract: This article presents a critical assessment of research and practices that emerged over last 40 years that may be brought under the umbrella of “energy efficiency,” spanning different aggregations and domains – from individual producing and consuming agents to economy-wide effects, the role of innovation, and the influence of policy. It highlights advances in understanding the benefits of energy efficiency innovation, improvements in economic and measurement methods and tools, and progress in bending downward the energy use per unit economic output curve, which has taken over a century. We focus on how well deliberate policy actions have influenced energy users in the uptake of energy efficiency. We also note how policies pursued thus far have put less attention on social welfare, inequity issues, and need to better account for complex dynamics associated with how micro actions affect macro outcomes, and to include a richer interdisciplinary approach.