NHS Making energy work in healthcare (HTM 07-02 ) guidance on energy efficiency for the NHS just published March 25th 2015, authored by Alan Short, Peter Guthrie, Eleni Soulti and Sebastian MacMillan, see Department of Health website at:

https://www.gov.uk/government/publications/making-energy-work-in-healthcare-htm-07-02

NHS Energy Efficiency Fund Summary Report authored by Prof. Alan Short, Prof. Peter Guthrie, Eleni Soulti and Dr. Sebastian MacMillan published by UK Gov't Department of Health at https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/407160/EEF.pdf

'In 2010, the NHS England was responsible for 24.7 million tonnes of CO₂e (MtCO₂e), from which approximately 17% (4.07 MtCO₂e) was due to energy use in buildings. To be in line with the 28% carbon emissions reduction by 2020 compared to a 2013 baseline (ref SDS) this would require a reduction of 0.1628 MtCO₂e annually (around 4% savings every year). Investing nearly £50 million in the Energy Efficiency Fund in 2014 is expected to reduce carbon emissions by 0.1006 MtCO₂e (ref). Therefore, investment in retrofit projects achieving approximately 1.6 times the EEF savings every year would deliver this level of carbon emissions reduction.'