The uncertainties inherent in the data used for emission inventories help inform and improve understanding for the data's use. This is receiving increased attention in order to understand determinations of GHG emissions and emission reductions. This document provides background information, and details, on measurement uncertainty and statistical calculation methods that improve the quality of GHG emission estimations for the oil and gas industry. It is a collaborative effort between Ipieca, the American Petroleum Institute (API) and CONCAWE.
Addressing uncertainty in oil and natural gas industry greenhouse gas inventories

Related resources
- 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.
- 28 November 2022
The Ipieca-OGCI Natural climate solutions: high carbon stock ecosystems management guidance supports the Paris Agreement goals by setting out the key principles to help energy companies conserve, enhance and restore the high carbon stock ecosystems where they operate.
- 9 November 2022
A summary of the Ipieca-OGCI guidance on natural climate solutions management.
- 2 February 2022
The Ipieca-IOGP-GGFR Flaring management guidance outlines new developments in flaring management and reduction, and examines industry experiences with eliminating flaring, new technologies, business models, operational improvements and regulatory policy.