2. CO2 in construction Embodied CO2 emissions = arising from creating maintaining and demolishing the asset Operational CO2 emissions = arising from using the asset Operational CO2 Total CO2 + = Embodied CO2 Ref: S. Sturgis & G. Roberts, “Redefining Zero: carbon profiling as a solution to whole life carbon emission measurement in buildings”, May 2010, RICS Research
3. SEAI Mission “To play a leading role in transforming Ireland into a society based on sustainable energy structures, technologies and practice” The SEAI strategy to date is focused on operational CO2 SEAI Strategy Ref: SEAI - 2010-2015 strategic plan
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5. Embodied CO2 Embodied CO2 of the built environment is 11% of global annual emissions (approximately 3 billion tonnes). The embodied CO2 used to create a building may be as high as 62% of its total whole life emissions.* Success in reducing operating CO2 has raised embodied CO2, relatively and absolutely. A reduction in Embodied CO2 has an immediate benefit in tackling Climate Change. Ref: S. Sturgis & G. Roberts, “Redefining Zero: carbon profiling as a solution to whole life carbon emission measurement in buildings”, May 2010, RICS Research
6. Impact of building regulations on operational/embodied CO2 Ref: SEAI “ A Guide to Building Energy Rating (BER)” Ref: PM Group: “Embodied CO2 of housing construction in Ireland” - Architecture Ireland – Jan/Feb 2010
7. CO2 in construction Typical different whole life carbon splits for different types of buildings Embodied CO2 Operational CO2 Ref: S. Sturgis & G. Roberts, “Redefining Zero: carbon profiling as a solution to whole life carbon emission measurement in buildings”, May 2010, RICS Research
8. CO2 in construction Typical different whole life carbon splits for different types of buildings – in 10 years time Embodied CO2 Operational CO2 Ref: S. Sturgis & G. Roberts, “Redefining Zero: carbon profiling as a solution to whole life carbon emission measurement in buildings”, May 2010, RICS Research
10. Embodied CO2 Concrete accounts for 55% of embodied CO2 of a typical 3 bed semi-detached house ref: PM Group: Embodied CO2 of housing construction in Ireland Architecture Ireland – Jan/Feb 2010
11. Reduction in Embodied CO2 through the use of GGBS Original Embodied CO2 (38.7 tonnes) Reduced Embodied CO2 (25.8 tonnes) ref: PM Group: “Embodied CO2 of housing construction in Ireland” - Architecture Ireland – Jan/Feb 2010
12. Two simple points In construction, concrete is the main contributor to embodied CO2 Cement + GGBS is the best available technology to reduce embodied CO2 in construction.
13. What is GGBS cement Ground Granulated Blastfurnace Slag
14. GGBS Manufacture Steel Manufacture Water to make GBS GBS Grind to make GGBS Store GGBS for distribution
15. GGBS and the Environment CO2 emissions for cement and GGBS production Typical CO2 Emissions for Portland Cement and GGBS Production (Figures in kg per tonne of output) Ref: British Cement Association – Fact Sheet 18 [1]
16. GGBS and the Environment Typical Energy usage for Portland Cement and GGBS Production Ref: E. Kennedy, The Integration of the Measurement of Energy Usage into Road Design, National Roads Authority, Dublin. 2006
17. GGBS and the Environment Energy Usage in Barrels of Oil for Portland Cement and GGBS production
18. Industry sector 2030 cost curve ≈ 300,000 tonnes Ref: SEAI - “Ireland’s Low Carbon Opportunity” – July 2009
19. Industry sector 2030 cost curve Further opportunity to increase CO2 abatement at negative cost ≈ 600,000 tonnes Increases abatement potential up to 2.3m tonnes 15% increase Ref: SEAI - “Ireland’s Low Carbon Opportunity” – July 2009 – amended by Ecocem
20. Financial effects Value of €35/tonne CO2 derived from EU Directive 2009/33/EC Promotion of Clean Energy Efficient Road Transport Vehicles and UK Government Climate Change Act 2008 – Shadow Price of Carbon OECD “Ancillary benefits and costs of GHG mitigation: Policy Conclusions” ENV/EPOC/GSP(2001)13/FINAL, April 2002 Based on a price of $80/barrel Based on quarrying cost of €10/tonne. Financial effects of 600,000 tonne CO2 abatement
21. Realising the Opportunity Green Procurement Green Procurement Policy National Action Plan Green Procurement in private sector Green design Green specification
