The UK reduced its greenhouse gas emissions by 35% in 2014 from 1990 levels.
The country emitted 514.4 million tonnes of CO2 in 2014 – 7.7% less than 2013, according to a new report by DECC.
It said around half of the fall was the result of a warm 2014 and the other half was due to the continued deployment of renewable energy and energy efficient technologies as well as a reduction in the use of coal.
Between 2013 and 2014 the largest decrease came from the energy sector, accounting for 13.6% largely due to a fall in coal consumption, it added.
Emissions from the domestic sector also fell by 17% as gas demand for heating was lower.
The report stated: “For the purposes of carbon budgets reporting, UK greenhouse gas emissions in 2014 were 455.6 MtCO2e, which is 100.8 MtCO2e below the average annual emissions required to meet the second carbon budget (2013-2017).”