UNIVERSITY COLLEGE CORK
ANNUAL ENERGY REPORT
2010-2011
Buildings & Estates Office, UCC
Date: April 2012
CONTENTS
Executive Summary 3
Total Energy Breakdown 5
Overview 5
Total Electricity Breakdown 8
Total Natural Gas Breakdown 11
Water Consumption 13
Energy Benchmarking 14
Appendix A Energy Usage Analysis 15
Executive Summary
Total utilities cost (energy and water) for 10/11 is €4.877M, which is an increase of 1.7% on the previous year, driven primarily by the price increase of gas. There is a reduction in electricity usage of 1.35% in comparison to 2009/10 with both Main Campus and Lee Maltings showing volume and cost decreases in electricity. Gas prices increase have been the dominant reason for an increase of 17% in the price paid for gas usage. This is despite an increase in usage of less than 0.1%.
(Analysis inc Western Gateway exc Mardyke Arena, Campus Accomm and CUH)
Energy usage and cost:
· The total energy cost for 2010/11 was €4.6m which is a 1.9% increase on the 2009/10 cost, while the energy consumption has decreased by about 0.7% when compared to the previous year.
· Electricity usage decreased by 1.35% whilst gas usage increased by 0.1% compared to 2009/10 but when degree day corrected for gas consumption this increase becomes an increase of 4.1% despite the heating period in year 2010/11 being on average 0.5% slightly warmer than 2009/10 for the equivalent period.
Total Energy Breakdown
Overview
The following graphs highlight the total usage & cost for both electricity & gas and also the associated related CO2 emissions over the past 3 years at UCC.
Electricity cost at approximately €3.3m is a 3.2% decrease on 2009/10. This presents a large 20% decrease in cost versus the 2008/09 total electricity cost with an associated decrease in overall consumption of 2.0%.
(Incl Western Gateway)
The above bar chart highlights that both usage and cost have decreased for 2010/2011 when compared to previous year.
Natural gas cost at approximately €1.307m is a 17% increase on the previous year’s total with an increase in overall consumption of just 0.1%. The increase in consumption is despite a warmer winter and decrease in degree days and driven mainly by an increased consumption in Other Properties.
(Incl Western Gateway)
The previous bar chart highlights that gas usage has increased slightly for 2010/2011 compared to the previous year
UCC Carbon Footprint for 2010/2011 amounted to 17,503t CO2. This highlights a 0.4% increase in total carbon emissions with respect to electricity and gas usage. Overall, electricity emissions increased by 0.5% while gas emissions increased over the year by 0.1%.The electricity from green suppliers is provides a substantial reduction in UCC’s carbon footprint
The above bar chart highlights that related CO2 emissions[1] follow the patterns displayed by both electricity and gas consumption.
Total Electricity Breakdown
The following graphs highlight the usage & cost breakdown for electricity and also the associated electricity related CO2 emissions over the past 6 years at UCC.
As can be seen from the above bar chart, all areas with the exception of Western Gateway (note increased activity and floor area) recorded a decrease in electricity consumption for 2010/2011 compared to the previous year.
As can be seen from the above bar chart, electricity costs have increased both for Western Gateway based on increased electricity consumption; and also due to Other Buildings. Overall, total electricity costs reduced by 3.15%.
Main Campus electricity consumption (kWhrs/m2/annum) during 2010/11 decreased by 1.5% despite a target of 5% against 2009/10.
Savings of 2% were achieved the previous year 2010/11 versus the base year 2009/10.
This builds on the cumulative savings of 5.1% that had been achieved by end 2009/10 against the base year 2007/08 as shown graphically below.
Total Natural Gas Breakdown
The following graphs highlight the usage & cost breakdown for natural gas and also the associated gas related CO2 emissions over the past 3 years at UCC.
The above bar chart highlights that gas usage has increased for 2010/2011 for Other Buidlings and Western Gateway compared to the previous year. Lee Maltings has seen a large decrease. The consumption figures above are not degree day corrected.
As can be seen from the above bar chart, gas costs for 2010/11 have shown the effects of increasing gas tariffs.
Water Consumption
Water usage decreased by 20% compared to previous year’s figures. This was achieved due to continued monitoring usage and further implementation of water conservation measures. Water cost has slightly decreased compared to previous year’s figures.
Energy Benchmarking
Energy Benchmark (kWh/student)
The energy usage per student benchmark for UCC for this year stands at 3,304kWh/student. Degree day correcting this to compare against the base year gives a DD corrected figure of 3,031kWh/student. This is in comparison to a degree day corrected figure of 3,014kWh/student for 2009/10. UCC minus the Maltings gives 2,342kWh/student for 2010/11 as compared to 2,295kWh/student the previous year. A summary of the benchmarking is given in the table below.
Total UCC / DDC Total UCC (v base yr) / DDC Total UCC (excl Maltings) (v base yr)Benchmark / kWh/pp / kWh/pp / kWh/pp
2010/11 / 3,304 / 3,031 / 2,342
2009/10 / 3,339 / 3,014 / 2,295
2008/09 / 3,493 / 3,248 / 2,534
Appendix A Energy Usage Analysis
The graph below highlights the effective usage (per student) of electricity across the campus and highlights the comparison of total electricity usage per student over the past 3 years. These figures include the Maltings consumption which is very high in comparison to other college areas. The trend indicates this key performance indicator (KPI) is reducing year on year.
The above graph highlights the effective usage (per student) of electricity across the campus exc. the Maltings.
The graph below highlights the effective usage (per student) of gas across the campus and highlights the comparison of total gas usage per student over the past 3 years. These figures include the Maltings consumption which is very high in comparison to other college areas.
Note: above years have been degree day corrected against base year 2006/07 for comparative purposes.
The graph above highlights the effective usage (per student) of gas across the campus and highlights the comparison of total gas usage over the past 2 years.
The above graph highlights the effective usage (per student) of gas across the campus when removing the Maltings.
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[1] Note: The CO2 emissions were calculated using emission factors of 185gCO2/kWh for natural gas, 538gCO2/kWh for grid sourced electricity and 70% of grid emissions for CHP power