Zero carbon non-domestic buildings:

This is a technical and economic analysis of different options for zero carbon standards for new non-domestic buildings. 

http://www.communities.gov.uk/documents/planningandbuilding/pdf/1940106.pdf

In many cases, the impact of built form had a tendency to increase certain aspects of energy use and reduce others. Modelling found that lower glazing percentages and larger floor to façade ratios resulted in greatest reductions in emissions at least where an air-conditioning services strategy is maintained (savings of order of 15-20 per cent). Larger carbon reductions appear possible (up to 30 per cent reduction) from changes to built-form which result in the ability to implement a lower carbon servicing strategy such as natural ventilation or mixed mode