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Appendix 5 Electricity use in UK/Scottish Transport
The UK generates approx 149 Mt CO 2 equivalent from 'transport' end-uses ( http://www.statistics.gov.uk/downloads/theme_environment/transport_report.pdf).
The vast majority (125 Mt) is from road transport.
Appendix 5.1 Vehicle transport
However, some uses are:
1. Tubes and trams = 0.8 Mt CO 2. Tubes and trams will be almost 100% electric.
2. Trains = 1.5 Mt, estimated to be about 25% electric.
3. Buses & coaches = 4.8 Mt, probably < 1% electric.
Combined, this would give about 1.2 Mt CO 2 coming from electricity use in vehicle transport, i.e. less than 1% of the total.
- Converting to direct energy use at 0.432 kg CO 2/ kWh, this represents 2.8 TWh of electricity.
- If this is then applied to Scotland on a population pro-rata basis, it would represent 0.24 TWh.
- From brief conversations with FES Scotland and AEAT Transport Team, Scotland is likely to be less than pro-rata:
- Glasgow has an underground but it is nowhere near the size of the London Underground and the electrified suburban rail system or the Midlands or the NE electrified train system/Docklands light rail/Sheffield, Newcastle or Manchester trams/etc.
- Instead, have applied 0.75 factor to the pro-rata population.
- This gives 0.18 TWh of electricity used for 'vehicle transport' in Scotland.
Appendix 5.2 Pipeline transport
- A second, smaller area of 'transport' is pipeline. This is equivalent to 0.30 Mt CO 2 emissions for UK.
- It is likely to be mostly electricity, which would represent 0.70 TWh for UK, or 0.06 TWh for Scotland on a pro-rata population basis.
- However, with Scottish oil and gas being big industries, Scotland's is likely to be much larger than population pro-rata.
- Instead, have applied 2.0 factor to the pro-rata population.
This gives 0.12 TWh of electricity used for 'pipeline transport' in Scotland.
Appendix 5.3 Overall
Combined, these two transport uses are likely to be around 0.30 TWh of electricity consumption in Scotland. These represent only a very small (0.6%) of total transport, however, they have been included for completion.
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