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How cloud computing delivers economy-wide financial benefits and carbon reductions


Figure 3. Model derived net CO2 Million tons of CO2 6.7 10.9 17.0 24.7 33.4 43.1 53.4 63.7 74.6 85.7


savings 2011-2020.


2011 2012


2013


2014


2015


2016


2017


2018


2019


2020


*CO2 savings measured against a scenario where there is no cloud computing. These are annual CO2 savings.


Figure 4. Model derived percentage CO2 savings of cloud computing compared to no cloud computing 2011-2020.


focused on exactly these issues and made the point that while significant advances in data center energy efficiency have been achieved, this has not been matched by efforts to source lower carbon energy to power them. PUE calculation tools, developed by the likes of The Green Grid17


Data center energy sources and efficiency Two elements to be considered in evaluating the carbon impact of the cloud computing strategies of specific firms are the source of the energy being used to power the data center and energy efficiency efforts. A recent Greenpeace report16


, 9 2011 13 2012 19 2013 25 2014  Forecast scenario  No cloud 32 2015 38 2016 43 2017 46 2018 49 2019 50 2020


have helped in driving efficiencies in the data center but increasing IT demand serves to offset progress in energy efficiency. Many companies are seeking to use renewable energy such as hydropower to power their data centers whilst increasing energy efficiency levels. Overall, in looking to de-carbonize your data center it is important to look at the source of the power as well as the efficiency of the data center itself.


Figure 5. Model derived percentage rise of CO2


*% CO2 savings measured against a scenario where there is no cloud computing.


76 69 83 72


 Forecast scenario  No cloud 2011


2012 2013 91 74 98 74 emissions of forecasted scenario compared to non adoption of cloud computing. 153 106 72 2014 2015 115 71 2016 125 72 2017 138 74 79 84 170


2018


2019


2020


15. Environmental Protection Agency – Green Power Equivalency Calculator http://www.epa.gov/greenpower/ pubs/calcmeth.htm


16. http://www.greenpeace.org/international/en/news/features/ New-Greenpeace-report-digs-up-the-dirt-on-Internet-data- centres/


*% CO2 savings measured against a scenario where there is no cloud computing.


17. http://www.thegreengrid.org/en/Global/Content/Tools/PUEE 17


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