London Energy and Greenhouse Gas Inventory (LEGGI) 2012

London Energy and Greenhouse Gas Inventory (LEGGI) 2012 showing greenhouse gas emissions and energy consumption for London. The is the interim version of the LEGGI 2012, which will be confirmed when final confirmed data on energy use is published by the Department of Energy and Climate Change (DECC), expected in 2015.

LEGGI shows estimates of energy consumption and carbon dioxide (CO2) emissions from Homes, Workplaces and Transport within the Greater London area. It is produced by the Greater London Authority on an annual basis to measure progress against the Mayor's Climate Change Mitigation and Energy Strategy. LEGGI uses sub-regional energy (electricity, gas and other fuels) and CO2 data published by DECC for Homes and Workplaces, and data from the London Atmospheric Emissions Inventory (LAEI) for energy and CO2 data for Transport.

Interim results show that in 2012, emissions in London were 40.75 MtCO2e. This is a 10% reduction from 1990 figures and a 19% reduction since their peak in 2000. CO2e levels have increased by 4.5% (1.76 MtCO2e) from 2011 to 2012 (38.99 to 40.75 MtCO2e respectively). It is estimated this is due to an increase in the CO2e intensity of the electricity grid, increased gas use due to a cold winter in 2012 and an increased population in London.