Identifying the need for an international standard on GHG accounting and
Governments, corporations and voluntary initiatives currently use a number of approaches to account for organization- and project-level greenhouse gas (GHG) emissions and removals. In mid-2002, the International Organization for Standardization (ISO) identified a need to standardize aspects of GHG accounting and verification to support the credibility, comparability and environmental integrity of existing and emerging regulatory (international, regional, national) and voluntary GHG schemes. Currently, the most widely used approach to preparing corporate GHG inventories is the Greenhouse Gas Protocol: a Corporate Accounting & Reporting Standard (GHG Protocol) developed under the auspices of the World Resources Institute (WRI) and the World Business Council for Sustainable Development (WBCSD).
Several voluntary GHG registries have built scheme rules based on the GHG Protocol (eg, California Climate Action Registry, US EPA Climate Leaders, WWF Climate Savers). Existing (eg, UK Emissions Trading Scheme) and emerging (eg, EC Emissions Trading system) allowance-based regulatory systems have developed or are developing scheme rules for entity-level GHG accounting often consistent with the GHG Protocol. Recently, the WRI/WBCSD released a draft of its GHG Protocol Project Module and initiated the module’s “road test” across a range of GHG projects. Internationally recognized best practice guidelines on GHG verification currently do not exist.
ISO’s goal in developing standards for GHG accounting and verification is to provide a set of unambiguous, verifiable requirements or specifications to support organizations and GHG project proponents in using a quantification, monitoring and verification approach that ensures “a ton of carbon is always a ton of carbon”. ISO standards may also enable GHG scheme administrators to design systems using standardized “building blocks”, supporting the compatibility of rules and comparability and credibility of GHG quantifications, read more and download this file Here