Objective: To analyse meter profiles and review data with the sustainability team and key stakeholders.
Method: Four energy usage meter profiles for 24hrs, a week, a month and a year were accessed via Sean Jobling of the Sustainability Team. These were interpreted at IHS Eco team meetings and discussed with the Sustainability Team. Information was disseminated via intranet and blog.
24hr profile for Baddiley Clark
An exponential increase in power consumption is noted when people arrive for work between 8 and 10 am. This can be attributed to switching on of computers, lights etc. Peaks at 9.30 and 11 and 12.30 may be associated with tea and lunch breaks. We see people starting to leave from around 4pm with plenty of late workers.
Weekly profile for Baddiley Clark
Here we clearly see a building baseline usage of 50kWh, much of which may be attributable to the laboratories in CBCB. Average domestic household consumption reported by the government equates 1.74 kWh1. Cambridge University’s Server building has a baseline of 90kWh2.
We can see activity at weekends. Tuesdays and Thursdays are the busiest days for this selected week; possibly attributable to part time working, or overnight laboratory analyses. More people appear to finish earlier on Fridays.
Monthly profile for Baddiley Clark
Each week is a little different. It looks like some people may be having a day off to go shopping at the end of the month when they’ve got they’ve been paid. Less people came into work on Valentines weekend!
Annual profile for Baddiley Clark
We clearly see how well the Christmas Holidays shutdown works, as well as the Easter weekend. Although we expected July and August to show less activity, it looks like we were using more energy to keep cool during this warmer period. The baseline increases in July, potentially an increase in use of refrigeration. Higher values during the day may be fans.
Outcomes, Learning Points and Next Steps:
A big thank you to the all the Christmas shut down team! Your fortitude has really paid off.
We hope this will help staff and students to recognise the positive impact that switching off has on our environmental foot print and of course our finances.
We will continue to monitor profiles, to identify further areas for improvement including baseline reduction where feasible.
1 Department of Energy and Climate Change, Energy consumption in the UK (2013)
2 University of Cambridge, Energy use in the University of Cambridge, Engineering for a low carbon future (2009)