UK 2017 Carbon Conversion Factors Download

On 4th August 2017, BEIS released the long-awaited 2017 carbon conversion factors, the full set of which you can download here

The key changes this year are:

  • Plug in Electric Vehicles:
    It was already possible in previous years to calculate the emissions resulting from driving EVs by multiplying the individual fuel and electricity consumption of these vehicles against the corresponding conversion factors. However, with the increasing prevalence of EVs, BEIS has created bespoke emissions factors making calculating the emissions much simpler.
    They’ve added a number of emission factors for electric cars and vans (since other electric vehicle types do not yet have significant market presence) to cover their different emissions components.
    For plug-in hybrid electric vehicles (PHEVs, including range-extended electric vehicles) the situation is particularly complex since the resulting emissions can be categorised into Scope 1 (i.e. direct emissions from petrol or diesel use), Scope 2 (from electricity use) and Scope 3 (electricity Transmission and Distribution losses, and WTT (Well to Tank) emissions).

Should you be considering or already be converting your company fleet to EVs or PHEVs and need help with calculating your emissions – which will be considerably lower than your conventional diesel fleet’s – give us a ring (+44 2070960054) or email Emma at [email protected] for advice or a friendly chat about how we might help.

  • UK Grid Electricity:
    In this 2017 update, the CO2e factors have decreased again (compared with 2016) by 14% – 15%. This is due to a significant decrease in coal-based electricity generation, and an increase in gas and renewables generation. Reporting Scope 2 and 3 emissions from electricity will be challenging for carbon analysts across all industries, since static or even decreasing electricity efficiency could still result in a potentially misleading decrease in emissions, perhaps dis-incentivising energy efficiency measures and masking those measures already undertaken.
    For help and advice on articulating absolute and normalised year on year emissions changes and comparisons against targets to management and stakeholders of your organisation, please give us a ring on 020 70960054 or email Emma at [email protected] for an informal chat.
  • Air Business Travel: Domestic and short haul flight conversion factors have decreased by an average of 4% whilst long haul flights from the UK have increased in intensity by an average of 3%.
  • Hotel Stays New factors to report emissions associated with an overnight hotel stay, which complement the existing emission factors for business travel.
  • Change in WTT (Well To Tank) Factors The methodological source for WTT emission factors for a range of different transport fuels (including petrol, diesel, kerosene and natural gas/CNG/LNG) has been updated this year, resulting in some significant increases in the resulting emissions from burning these fuels:
  • Change in average petrol and diesel forecourt biofuel blend mixes Petrol and diesel average emission factors have been reworked to account for the average share of biofuel blended with petrol and diesel fuels in petrol stations. The methodologies used to calculate vehicle emission factors have previously been based upon pure conventional fossil-based road transport fuels.

NB Overseas Electricity:
Since 2016 the IEA no longer provides free non-UK grid factors. They are available for sale from the CO2 Emissions from Fuel Combustion online data service at the International Energy Agency (IEA) website.

FOR THOSE INCLUDING SCOPE 3 EMISSIONS IN YOUR REPORTING: Please be advised that should you purchase these conversion factors, you’ll also need to apply the scope 3 Transmission & Distribution and Well-To-Tank conversion factors for overseas electricity which BEIS is continuing to publish, since the IEA does not provide these.

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