In 2011 we have broadened the scope of our CO2 reporting to include emissions from natural gas and diesel, and generally included our top ten largest sites as opposed to only two reported last year. For this reason the figures of the report this year don't match the report of 2010.
With regards to fossil fuels combustion, our offices in Erding, Frankfurt and London use diesel and natural gas for heating and guaranteeing uninterrupted power supply. Their consumption is included in the table below:
Following the Green House Gas protocol standards, CO2 emissions are reported in the table below:
A critical success factor for our improvement in 2011 in scope 2 emissions was our agreement with our electricity provider for the Amadeus Data Centre in Erding that managed to reduce CO2 emissions per kWh from 291 to 171, with the positive consequence regarding emissions. Also important was our continuous improvement in efficiency, as demonstrated in the figure above, by which we keep reducing the amount of power required per transaction. This is a fundamental effort since the number of transactions keeps growing year over year.
On the other hand, our geographical expansion and business growth are mainly the reasons for our rise in scope 3 emissions, mainly due to increased number of business trips 1.