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Semelhante a Angela Druckman | Missing the target: To What Extent Does the Rebound Effect Cause a Shortfall in Expected Carbon Reductions
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Angela Druckman | Missing the target: To What Extent Does the Rebound Effect Cause a Shortfall in Expected Carbon Reductions
- 1. Missing the target? To what extent does the rebound effect cause a shortfall in expected carbon reductions? Angela Druckman, Mona Chitnis, Steve Sorrell and Tim Jackson 4th International Conference on Carbon Accounting Edinburgh Conference Center 25th November 2011
- 3. Illustration of rebound effects Lower running costs Driver further or more often Lower petrol bills Holiday in Spain Fuel efficient - less energy More energy More energy Direct Indirect Embodied energy
- 6. Abatement action study Action £ Expenditure avoided Re-use £ Re-spend Bank/Invest Expected GHG reduction Δ H GHGs due to re-use Δ G Rebound = If Δ G > Δ H; Rebound > 100%; Backfire
- 10. UK estimated average household expenditures and GHGs in 2008
- 11. Estimated average annual UK household expenditure and savings
- 12. Estimated average annual UK household GHG emissions
- 13. GHG intensities
- 14. Results of study
- 15. Rebound effect for different actions: ‘ Behaviour as usual ’
- 16. All 3 actions with varying assumptions concerning re-spend Green investment
- 18. Energy Efficiency Study Results Source: Chitnis, Sorrell, Firth, Druckman and Jackson (forthcoming) * Assumes behaviour as usual Measure Rebound * Minimum Maximum 1 Cavity wall insulation 3 9 2 Loft insulation professional to 270 mm -21 26 3 Condensing boiler 7 7 4 Tank insulation 6 8 5 CFL 9 12 6 LED -14 8 7 1,2,3,4, 5 in combination 3 10 8 1,2,3,4, 6 in combination 1 10 9 Solar thermal -302 28 10 Diesel efficient car 40 40
- 22. Missing the target? To what extent does the rebound effect cause a shortfall in expected carbon reductions? Angela Druckman, Mona Chitnis, Steve Sorrell and Tim Jackson Contact: [email_address] 5th International Conference on Carbon Accounting Edinburgh Conference Center 25th November 2011
Notas do Editor
- Acknowledgements This study is slightly different to the one described in the Working Paper. Energy and carbon prices are too low Policies too small-scale, under-funded, poorly designed ineffectual. … something else going on also?
- Jevons paradox
- Abatement actions No capital expenditure Achieved thru behavioural changes Actions drawn from government sponsored websites. ActOnCO2: “ Turning your thermostat down by 1ºC could reduce CO 2 emissions & cut your fuel bills by up to 10% WRAP 2008 “ we throw away a third of the food we buy “ simple approximation: reduced expenditure on food by 1/3 ActOnCO2: for car journeys are under two miles, walking or cycling is often a practical alternative to driving.” “ As nearly a quarter of all car journeys are under two miles, walking or cycling is often a practical alternative to driving.” http://www.bradfordschools.net/hotpot/Unit%208.1/thermostat.gif http://3.bp.blogspot.com/_ERdyIv8jDWY/SyEfvKrTSlI/AAAAAAAAGyQ/NDfXoOvojiI/s400/0511-0809-0702-2841_Dad_Grocery_Shopping_Clip_Art_clipart_image.png http://www.google.co.uk/imgres?imgurl=http://images.clipartof.com/small/5605-Happy-Man-Wearing-A-Safety-Helmet-While-Riding-A-Bicycle-Clipart-Illustration.jpg&imgrefurl=http://www.clipartof.com/details/clipart/5605.html&usg=__IcxPmOJcIMb2_q61Isame4xNtVg=&h=450&w=431&sz=63&hl=en&start=17&zoom=1&itbs=1&tbnid=JD1RwgrORnY4RM:&tbnh=127&tbnw=122&prev=/images%3Fq%3Dbicycle%2Bclip%2Bart%26hl%3Den%26gbv%3D2%26tbs%3Disch:1
- Household action example: Install loft insulation Avoids expenditure on heating fuels Rebound 20% means only 80% expected GHG reductions achieved in reality. Rebound over 100% Energy efficiency actions “BACKFIRE” Increase overall energy consumption
- ‘ Least worst’ rebound in least GHG intensive category Household = household maintenance & water supply Worst case rebound in most GHG intensive category Gas Savings Current ~4% disposable income saved Last decade ~4-9% All avoided expenditure put into savings Chinese rate ~40% -ve rate: households going into debt http://lastarial.files.wordpress.com/2006/09/money_men.jpg
- Exogenous Non-Economic Factors - EXNEF: The stochastic underlying trends Captures technical progress, socio-demographic and geographic factors, changes in tastes, lifestyles values, In other words: total non-price and non-income effects
- UK average household; Only talking about ‘ Indirect’ Rebound Effect here ie expenditure on a different ’ service than the action Direct not relevant to this study Direct: demand for service down; price down; people consume more. Generally would lead to higher rebound this study conservative Aviation – part of Other Transport in this study
- Gas ~ 1% of total expenditure Saving ~ 4%
- Other transport inc personal aviation
- Yellow ΔH = Hoped for GHG reductions Red ΔG = GHGs due to re-use of avoided expenditure Rebound is ratio ΔG / ΔH Graph shows rebound for each action separately then combined for ‘Behaviour as usual’ ie Re-spend according to income elasticities Lowest gas Food: Highest rebound action in relatively low intensive category Expect re-spend in higher intensity categories So high rebound
- Best & worst case depend on disaggregation Higher disaggregation isolate extremely low intensive expenditure category eg Fine art? very low rebound Green Investment? Choose investments with extremely low carbon intensity rebound might approach zero If money, in future, invested in “ negative” carbon technology then investment might have negative emissions, Eg Carbon trees: ‘suck’ CO2 from atmosphere So positive rebound is in theory possible .
- http://www.halfthedeck.com/images/112backfire.jpg http://www.google.co.uk/imgres?imgurl=http://www.patentspostgrant.com/wp-content/uploads/2010/06/Gun-Backfire.gif&imgrefurl=http://www.patentspostgrant.com/lang/en/2010/06/patent-owner-requested-ex-parte-reexamination-boomerangs-in-ex-parte-yasukochi-et-al&usg=__1te3K3qUxKCan4YlS1e-LJ80Nv8=&h=337&w=420&sz=53&hl=en&start=1&tbnid=jkDnZg6gHXh7_M:&tbnh=100&tbnw=125&prev=/images%3Fq%3Dbackfire%26hl%3Den%26sa%3DG%26biw%3D761%26bih%3D609%26gbv%3D2%26as_st%3Dy%26tbs%3Disch:1,itp:photo&itbs=1
- http://www.halfthedeck.com/images/112backfire.jpg http://www.google.co.uk/imgres?imgurl=http://www.patentspostgrant.com/wp-content/uploads/2010/06/Gun-Backfire.gif&imgrefurl=http://www.patentspostgrant.com/lang/en/2010/06/patent-owner-requested-ex-parte-reexamination-boomerangs-in-ex-parte-yasukochi-et-al&usg=__1te3K3qUxKCan4YlS1e-LJ80Nv8=&h=337&w=420&sz=53&hl=en&start=1&tbnid=jkDnZg6gHXh7_M:&tbnh=100&tbnw=125&prev=/images%3Fq%3Dbackfire%26hl%3Den%26sa%3DG%26biw%3D761%26bih%3D609%26gbv%3D2%26as_st%3Dy%26tbs%3Disch:1,itp:photo&itbs=1
- Conclusion: It’s imperative that policy-makers take account of the rebound effect when estimating GHG emissions reductions achievable through encouraging household behaviour change. If they do not, & don’t take steps to reduce rebound, achieving targets to reduce carbon emissions will be even more of a Sisyphean task than it already seems. The mission of the Green Bank of Kentucky is to promote energy efficiency in state buildings through competition for low interest loans to reduce operating costs, energy use, protect the environment, save taxpayer dollars, promote economic development, and create new “green collar” jobs by means of education, engineering analyses and building improvements.