Carbon review and qualitative comparison of selected carbon counting tools

Ekundayo, Damilola, Perera, Srinath, Udeaja, Chica and Zhou, Lei (2012) Carbon review and qualitative comparison of selected carbon counting tools. In: RICS COBRA Research Conference, 11-13 Sep 2012, Las Vegas, Nevada, USA.

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Abstract

Climate change is one of the greatest environmental threats facing our civilization today. In the UK, carbon related to buildings amount to around half of the total greenhouse gas emissions. It is essential that we are able to accurately count carbon which is now increasingly being used as a metric of building environmental performance and energy efficiency. Following the rule that only measurable is manageable, quantifying carbon will serve as a basis for building environmental management and improvement. The aim of this paper is thus to review the concept of whole-life carbon in buildings and the different carbon estimating tools available. The research revealed that the total (whole-life) carbon emissions associated with a building from cradle-to-grave can be categorised into embodied and operational carbon. Whilst there are now formalised methods for measuring operational carbon due to its significance in whole-life carbon, there is still less emphasis on embodied carbon counting despite the rising need and importance. Qualitative comparison of some selected open source UK tools for embodied carbon estimation shows disparities in boundary definitions, unit of measurements and methodological calculations amongst others. These suggest that an industry agreed data structure and common methodology is needed for embodied carbon estimation.

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