I just read an article that the European Commission has adopted the “Recommendation on mobilising Information and Communications Technologies to facilitate the transition to an energy-efficient, low-carbon economy”.
The EU has committed itself to expanding the use of renewable energies by 20%, achieving a 20% reduction in greenhouse gas emissions and a 20% increase in energy efficiency, all by 2020.
ICT products and services currently cause about 8% of the consumption of electric power of the European Union. By that they cause about 2% of all CO2 emmissions in Europe.
On the other hand ICT can act as an enabler to save electricity in energyintensive sectors like buildings, transport and logistics. EU estimates that ICT can reduce the CO2 emmissions in these sectors by 15% until 2020.
You can find more details at http://ec.europa.eu/information_society/activities/sustainable_growth/energy_efficiency/index_en.htm