Recognizing the need to update the original version of the Guidelines to reflect changing practices, Ipieca and API jointly initiated the development of this second edition of the Guidelines to continue to promote credible, consistent and reliable greenhouse gas (GHG) accounting and reporting practices from oil and gas operations. As with the original, these guidelines are based on the WRI/WBCSD GHG Protocol, but add (and occasionally differ) by providing industry-specific guidance. The new edition holds significantly revised chapters on setting boundaries (including discussion of financial control and clearer reference to Scope 1, 2, and 3 emissions) and the evaluation of industry GHG emissions, including uncertainty. There are also revisions to discussions around reporting emissions over time, de minimis emissions, and normalization. The revised Guidelines have aimed to achieve consistency with the approaches described in the revised Ipieca/API/OGP publication Oil and gas industry guidance on voluntary sustainability reporting.
Petroleum industry guidelines for reporting greenhouse gas emissions - 2nd edition

Related resources
- 28 June 2007
This document is the second of five greenhouse gas reduction 'project families' in an ongoing process of developing guidelines for project activities of interest to the oil and gas industry. Guidelines are provided for carbon dioxide capture and geological storage as an emission reduction option. The focus is on specific technical considerations and aspects rather than policy considerations.
- 28 March 2007
The purpose of this document is to develop a voluntary framework for assessing GHG emission reductions associated with specific types of oil and natural gas projects, including references to relevant methodologies or guidance.
- 26 September 2023
Ipieca, together with IOGP and the Oil and Gas Climate Initiative (OGCI), have released a recommended practices guide to help operators select and deploy methane detection and quantification technologies.
- 14 December 2022
The online Ipieca-IOGP database provides an introduction to energy efficiency measures for oil and gas facilities, and aims to raise awareness and uptake of such technologies and practices across the industry.