Archaeology South-East has made a commitment along with the University College London to reduce its carbon emmissions as part of the 10:10 campaign (click here to see the 10:10 website).
ASE are in the process of developing a strategy to monitor and reduce our emmissions, news of which will be posted here shortly.
You can read about the UCL commitment to energy savings and emmissions reduction by http://www.ucl.ac.uk/environment/.
Institute of Archaeology
Centre for Applied Archaeology
ASE Reports Online