1. International Energy Agency. 2011 World energy outlook 2011. Paris France: Organisation for Economic Co-operation and Development.
2. Department of Energy and Climate Change. 2011 Sub-national energy consumption statistics. See http://www.decc.gov.uk/en/content/cms/statistics/energy_stats/regional/regional.aspx.
3. GeoModel Solar s.r.o. Solar GIS. 2012 See: http://solargis.info.
4. London Datastore. 2010 Land use by ward. See http://data.london.gov.uk/datastore/package/land-use-ward.