Allocation of GHG Emissions from a Combined Heat and Power
(CHP) Plant
Guide to calculation worksheets (September 2006) v1.0
A WRI/WBCSD GHG Protocol Initiative calculation tool
Table of Contents
I.
Overview
II.
CHP emission allocation methods
III. Guidance on following the efficiency method
IV. Using the calculation worksheets for the efficiency method
V.
Example calculations to illustrate application of the efficiency method
VI. Quality control
VII. Reporting and documentation
Appendix I. Guidance on following the work potential method
Appendix II. Guidance on following the energy content method
Appendix III. References
Appendix IV. Acknowledgements
1
I. Overview
Purpose and domain of this tool
This tool intends to facilitate the allocation of GHG emissions attributable to the purchase or sale of
energy from a combined heat and power (CHP) plant. This document is to be used in conjunction
with calculation worksheets – “Allocation of GHG Emissions from a Combined Heat and
Power (CHP) Plant”, which can be downloaded from the GHG Protocol Initiative website,
www.ghgprotcol.org.
Depending on circumstances, this tool may also be used in conjunction with up to five additional
documents and tools, which can also all be downloaded from the GHG Protocol Initiative website.
These documents and tools include:
• “The Greenhouse Gas Protocol: A Corporate Accounting and Reporting Standard (Revised
Edition)”;
• Calculation worksheets – “Direct emissions from stationary combustion” (revised);
• Guide to calculation worksheets – “Direct emissions from stationary combustion” (revised);
• Calculation worksheets – “Indirect CO2 emissions from the consumption of purchased
electricity, heat or steam”; and
• Guide to calculation worksheets – “Indirect CO2 emissions from the consumption of purchased
electricity, heat or steam”.
This is a cross-sector tool, which should be applied by all companies whose operations involve the
purchase or sale of e