What we have achieved
The University has managed to reduce its Scope 1 and 2 emissions under ISO 14064 from 46,928tCO2e in 2007-8 to 39,307tCO2e in 2017-18, our most recent audited year. This is against a 40% increase in staff and student numbers in the same period.
If we consider the properties over which we have operational control, and don’t include properties owned by third parties, emissions have fallen by 31% from 2007-8 from 45,504 tCO2e to 31,390 tCO2e.
Key projects which have helped us to do this have been:
- Introducing heat pumps and better heating controls in our electrically heated halls of residence.
- Instituting advanced control in laboratories to reduce the need to condition air.
- Recovering rejected heat from refrigeration to warm buildings.
- Making old boilers more efficient by putting in new, well controlled burners.
- Installing efficient LED lighting with responsive controls.
- Installing half a megawatt of solar power, and two megawatts of combined heat and power.
This is all on top of more standard measures such as insulation, control and helping building users to understand local systems.
56% of our Scope 1 and 2 emissions are from electricity. All our electricity is now bought from certified renewable sources and audited to check that there is no-double counting of benefit. This provenance is sufficient to count this as zero-carbon electricity under the Greenhouse Gas Protocol Market Based Approach.
Read more about our progress in 2017-18 in our Annual Sustainability Report, including a carbon reduction of 27% on Scope 1 and 2 emissions from baseline year 2007/08.