Britain’s total CO2 emissions are currently 38% below 1990 levels and are now as low as emissions were back in 1890 – the year the Forth Bridge was opened to railway traffic.
These findings are based on Carbon Brief analysis of newly released Department of Business, Energy and Industrial Strategy (BEIS) energy use figures. The department will publish its own CO2 estimates later this month.
UK CO2 emissions have been decreasing steadily every year since 2012, with particularly large falls in 2014 and 2016. This decline continued in 2017, driven by a combination of declining coal use and natural gas use. Oil and petroleum use has increased slightly, though not enough to offset the declines in CO2 associated with other fuels.
While the fall in coal use in 2017 was much smaller than that in 2016, it is clear that the large decline in coal use in recent years was not a temporary phenomenon.
Coal now accounts for only 5.3% of total primary energy consumed in the UK, down from 22% in 1995 and the UK government has pledged to close all coal-fired power stations by 2025.
The slight decrease in natural gas use in 2017 was largely related to a milder winter and does not show up in temperature-adjusted versions of the BEIS data that try to normalise for year-over-year changes in weather condition.
Reductions in coal use have driven most of the carbon reductions in recent years, though reductions in gas use were a larger driver earlier in the decade. The figure below shows how much each fuel has contributed to the overall decline in total CO2 emissions from fossil fuels since 2009.
Coal use in the UK had been mostly steady from the late 1990s until 2014, with declines in gas and oil use driving most emissions reductions. However, coal use fell precipitously between 2014 and 2017, declining by nearly 75% compared to 2013 values. Coal’s fall in recent years is responsible for the bulk of CO2 reductions in the UK over the past decade.
Based on the preliminary BEIS numbers, oil and petroleum use accounted for approximately 49% of total UK CO2 emissions from fossil fuels in 2017, up from 37% in 2010. The increased fraction of emissions coming from oil is due to declines in emissions from coal, as total emissions from oil has actually slightly declined, from 196MtCO2 to 191MtCO2 between 2010 and 2017.
The transportation sector consumed approximately 77% of all oil in 2015, the latest year where detailed breakdowns of consumption by sector are available. This means that approximately 38% of total UK CO2 emissions from fossil fuels can be attributed to oil consumed in the transportation sector in 2017, up from 36% in 2016.
Coal continues long slide downward
The UK’s coal consumption has fallen every year since 2012. It is now well below any level of use in the country’s recent history.
Back in 1858, the UK’s coal use was around 65m tonnes. It grew to a peak of 221m tonnes in 1956, then started a long decline. In 2017, coal use is estimated to be a mere 15m tonnes, 78% below its 1858 value and a massive 93% below its peak in 1956.
CO2 emissions down to below 1890 levels
With coal quickly disappearing in the UK and other fossil fuel use mostly flat, emissions have continued their steady decline.
Overall, CO2 emissions have declined faster in the UK since the early 1990s than in almost any other large economy.
While these rapid declines are impressive, there is still a long way to go to meet the national target of 80% reductions below 1990 levels by 2050.
CO2 emissions currently are around 38% below 1990 levels, leaving additional reductions of 250 Mt CO2 – around 68% of today’s emissions – to achieve over the next three decades.
If non-CO2 greenhouse gases are taken into account, emissions have fallen by around 42% since 1990. This assumes that non-CO2 greenhouse gases remained at 2016 levels for 2017, as 2017’s non-CO2 emissions data is not yet available.
8 Mar 2018