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Environmental Performance Indicators (EPIs)

Reducing energy use and waste streams is high on the agenda in our society. From both environmental and economic viewpoints, it is important to make savings in energy and waste. Before you can improve environmental performance, however, you need to be able to measure it properly and regularly.

The report over the EPIs of 2017 can be found here.

To this end, the Health, Safety and the Environment Service (AMD) of the University of Groningen has developed a set of Environmental Performance Indicators (EPIs) to measure environmental performance. The EPIs enable comparison of the environmental performance of buildings, faculties or even universities and commercial companies. Not only is environmental performance divided into water use, electricity use and gas use, the EPIs also provide a framework for measuring performance in the field of paper use and hazardous waste. The EPIs provide the University of Groningen with a unique system for measuring its environmental performance.

More information about determining EPIs

EPI's compared to 2005

University of Groningen EPIs including A. Deusinglaan 1 (Medical Sciences and Pharmacy complex)

2005

2014

2015

2016

Change 2015 in % compared to 2005

Students

22688

30461

30598

31048

36,8

Staff

6168

5548

5826

5898

-4,4

Students+Staff

28856

36009

36424

36946

28,0

Bruto floor surface

374377

481105

436145

436820

16,7

EPI / m2 GFA

Prim. Energy1 in EPI GJ/m2 GFA

1,45

1,27

1,41

1,4

-3,4

Water in EPI m3/m2 GFA

0,40

0,34

0,38

0,38

-5,0

Non-hazardous waste in EPI kg/m2 GFA

2,30

1,99

2,29

2,38

3,5

Hazardous waste in EPI kg/m2 GFA

0,20

0,11

0,18

0,16

-20,0

EPI / Student

Energy in EPI GJ/student

23,87

20,08

20,09

19,76

-17,2

Water in EPI m3/student

6,56

5,35

5,42

5,38

-18,0

Non-hazardous waste in EPI kg/student

38,03

31,5

32,67

33

-13,2

Hazardous waste in EPI kg/student

3,22

1,58

2,59

2,29

-28,9

EPI /Staff

Energy in EPI GJ/staff

87,81

110,24

105,52

104,01

18,4

Water in EPI m3/staff

24,15

29,40

28,46

28,35

17,4

Non-hazardous waste in EPI kg/staff

139,91

172,96

171,57

176

25,8

Hazardous waste in EPI kg/staff

11,85

8,70

13,63

12,04

1,6

EPI / staff+student

Energy in EPI GJ/staff+student

18,77

16,98

16,88

16,6

-11,6

Water in EPI m3/staff+student

5,16

4,53

4,55

4,53

-12,2

Non-hazardous waste in EPI kg/staff+student

29,90

26,65

27,44

28

-6,4

Hazardous waste in EPI kg/staff+student

2,53

1,34

2,18

1,92

-24,1

1 The primary energy consumption (Process Energy Requirement (PER)) is the energy needed for the production of energy by the Dutch power generators. Power plants in the Netherlands have an efficiency ranging between 38-46%. Our calculations are based on 44% efficiency.

2 In 2015 UG switched to another disposal company. Waste which was previously classified as "manure / bedding" is now recognized as a "special hospitalwaste (animals)". Based on the previous situation, the hazardous waste is 0.18 kg / m2 GFA and non-hazardous waste 2,29 kg / m2 GFA

The energy figures are adjusted for degree days

* 2005 is used because this year is used as a reference for the MJAIII (Meer Jaren Afspraak - longterm agreement)

In the figures below we presented the numbers of some of the EPI's. These results show that both bruto floor surface and the number of students have increased since 2005. More students means more energy use, for example for extra rooms and lecture halls. Opening hours have been increased because of a shortage of work spaces and more computers have been installed.

By dividing the energy use by the amount of staff and students the energy consumption per person can be determined. From the figures below it can be concludes that a downward trend is in motion for the subsets of energy and waste. Use of water shows an increase from 2006 trough 2013. In 2013, water use went down and then remained stabile. The reason for this decrease in water use is water saving measurements at the animal housing at the Linnaeusborg. Also, various buildings have had water saving or water efficient toilets and faucets installed.

EPI energy
EPI energy
EPI kg CO2
EPI kg CO2
EPI water
EPI water

Also the figures about hazardous waste show a positive trend. In 2013 there was a big clean-up of hazardous waste at Nijenborgh 4. This explains the decrease of the produced hazardous waste/m2 of nearly 40% in 2014.

EPI non-hazardous waste
EPI non-hazardous waste
EPI hazardous waste
EPI hazardous waste
CO2
CO2
Last modified:11 April 2019 4.33 p.m.
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