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Energy & Environmental Benchmarking. Definition of Benchmarking. ‘The continuous, systematic process of comparing the current level of performance against a predefined point of reference, the benchmark , in order to evaluate and improve performance’. What is Benchmarking?.
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Energy & Environmental Benchmarking www.e-Bench.com
Definition of Benchmarking ‘The continuous, systematic process of comparing the current level of performance against a predefined point of reference, the benchmark, in order to evaluate and improve performance’ www.e-Bench.com
What is Benchmarking? www.e-Bench.com
What is Benchmarking? www.e-Bench.com
Energy & Environmental Benchmarking • One of the most complex to model and benchmark; • Large range & type of data; • Many interrelations between data sets; • Can’t readily see it, i.e. electricity and CO2 are invisible and can only be measured; • But its impacts however can themselves be only too obvious! www.e-Bench.com
Energy & Environmental Benchmarking (cont’d) • Other impacts or ways to measure it may be global warming (temp increases), extinction of species, etc. • Rapid increase in public and political focus. UN Global Reporting Initiative. Triple Bottom Line Reporting. www.e-Bench.com
Why Benchmark? • Improve energy efficiency and minimise the consumption of other utilities and waste streams; • Save the organisation money; • Improve the organisations public image and reputation; • Improve employee goodwill, morale, productivity and retention; • Easier to attract external investment - out performing main Dow Jones index by 20%. www.e-Bench.com
Dow Jones Sustainability Index • Over 500 companies from 35 countries; • $3,050 billion in assets; • GNI of Australia - $400b, NZ - $51b. www.e-Bench.com
Typical Benchmarking Process • Paper based, spreadsheet or simple database process; • Often discrepencies in the data or field definitions; • Often not comparing apples with apples; • High level of manual data entry & therefore potential for errors; • Difficult to correct for many factors; • Historical record – often months old. www.e-Bench.com
Recent Technical Developments • The Internet – number of users continuing to increase; • Massive increase in bandwith for data transfer, e.g. in Wellington – 1GB available; • Other means of communication – wireless, TWACS, as well as the traditional landline; • Smart metering (time of use, pulse output) – possible remote reading every 5 minutes; • Faster computer processors & database engines, larger storage capacity. www.e-Bench.com
Benchmarking: New Approach • Internet-Enabled Benchmarking (IEB); • The ability to build an energy management database that features: • Real-time benchmarking with automatic upload of consumption and BMS data; • Desktop performance comparison of facilities & processes within own organisation and against others in the same database; • Seamless & fast corrections for climate, shape, occupancy, utlisation, orientation, construction. www.e-Bench.com
Example e-Bench™ www.e-Bench.com
What is it? • A desk top tool using thin client architecture; • Top-down rather than bottom-up approach. • Allows macro overview and desk top analysis; • Provides technical information in an easy to understand and easily accessible format; • Reports in $$$, kWh, CO2 emissions; • Only requires a web-browser for access. www.e-Bench.com
What does it do? • Checks and reconciles invoices; • Targeting and Monitoring; • Benchmarks Energy and Utlity use; • Normalizes for external factors; • Supports TEFMA Space Management analysis; • Modelling or Simulation. www.e-Bench.com
Normalizations • Climate (Cooling Degree Days/Heating Degree Days) for 25 regions in NZ; • Building Envelope (wall/roof/floor materials, thicknesses, area); • Orientation (north, south facing); • Exposure (wind, sun); • Shape (ratio of external walls); • Occupancy (hours, staff, equipment used, e.g. PCs, laboratory equip. etc.). www.e-Bench.com
Benchmarking Outputs • B1: Raw uncorrected benchmark: (total energy use / square metres); • B2: Adjusted for climate (degree days) and thermal values of the building’s fabric; • B3: Further adjusted for utilisation factors; • Lets us determine whether the inefficiencies are in the fabric, engineering services or operational equipment, e.g. type of PCs. www.e-Bench.com
Case Study (1) • NZ Ministry of Education • Spends over $30m annually on heating, lighting and water; • Pilot utility benchmarking trial of 114 schools to ‘reverse benchmark’ or simulate what a school should consume in energy and then fund accordingly. www.e-Bench.com
Case Study (2) • Dutch Benchmarking Covenant • Agreement in 1999 between Govt. and Industry to save 82,000 TJ and 5.7m tonnes CO2 by 2012 in exchange for no new energy taxes. www.e-Bench.com
Summary • Energy & Environmental Benchmarking has entered a new phase in response to: • Changes in social & policy attitudes towards the environment (and energy use); • Technological advances in metering, communications & processing speed; • It is now possible to have benchmarking based on real-time data & a basis for day-to-day decision making – continuous improvements. www.e-Bench.com
Thanks and Questions? • Geoff Bennett, Director, Energy and Technical Services • Wellington, New Zealand. • Tel: +64 4 384 6121 • Email: gbennett@energyts.com • Web: www.energyts.com www.e-Bench.com
