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Primary Energy Reporting

Primary Energy Reporting. Contents. What is primary energy? Why report primary energy usage? Primary energy reporting in LIEN Examples Benefits. What is Primary Energy?.

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Primary Energy Reporting

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  1. Primary Energy Reporting

  2. Contents • What is primary energy? • Why report primary energy usage? • Primary energy reporting in LIEN • Examples • Benefits

  3. What is Primary Energy? Energy embodied in natural resources (e.g. coal, crude oil, sunlight, uranium) that has not undergone any anthropogenic conversion or transformation. Intergovernmental Panel on Climate Change (IPCC)

  4. Total Primary Energy in Ireland

  5. LIEN reporting • LIEN treatment of primary energy and emissions calcualtion is based upon information currently available • As and when more detailed information is made available, LIEN reporting will be refined accordingly • LIEN methods in no way supercede what may be decided in future for dealing with a carbon tax regime and/or National Allocation Plan for emissions trading

  6. Primary fuel v Converted fuel

  7. Efficiency of Electrical Supply Efficiency of Supply Year

  8. National Generating Efficiency Average power station with generating efficiency of 40% 100 MW primary fuel in 40 MW electricity out Currently available figures indicate that the national generating efficiency is approximately 40% taking into account varying primary fuel mix and generators

  9. Example of LIEN treatment of primary energy 10 GWh Company A electricity Company A & B have equal primary energy requirements Company B 25 GWh natural gas

  10. How LIEN treats Primary Energy

  11. CHP • If a facility installs a CHP unit, metered usage in kWh will likely increase due to the increased usage of CHP fuel • However their primary usage will likely decrease to to the improved efficiency of the CHP unit compared to alternative methods of generating electricity and heat

  12. Primary reporting highlights benefit of CHP *Approximate efficiencies assumed: Gas boiler  75%, Gas CHP  80% Figures shown are for demonstration only and do not represent actual CHP figures

  13. Imports and Exports from CHP • Exports from CHP treated with the same factor of 2.5 e.g. if a CHP exports 10 GWh to the grid this saved a further 25 GWh of primary energy being used to generate this 10 GWh • A negative primary usage figure for electricity indicates that a site is a net exporter

  14. Importing Steam • If steam is imported to a site e.g. from an adjacent CHP, the primary fuel used to generate that steam must be considered • Must take account of boiler efficiency e.g. if a boiler has an efficiency of 75% and exports 75GWh of steam to an adjacent site, that site has consumed 100GWh of primary energy

  15. Emission Figures for Primary Fuels *1 TOE = 11,635 kWh These figures quoted in DoF consultation paper

  16. CO2 Emission Factors in LIEN

  17. Summary • Primary allows CHP and non-CHP facilities to report in an equitable manner • Reflects the enviromental benefit of using more efficient fuels • Is a more accurate measure of a site’s total energy use • Is a more indicative reflection of total emissions from a site

  18. Primary Energy Reporting Fiona Murray LIEN Project Manager

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