Calculating the GWP of Refrigerant Gas Mixes

Global warming potentials (GWPs) are used to convert emission contributions from specific greenhouse gases, such as methane, into units of carbon dioxide equivalent in order to facilitate the comparison of their environmental impact. Each greenhouse gas has its own global warming potential; for example, the GWP of methane is 25 and the GWP of nitrous oxide is 298. The source of the GWP you apply should be in line with that required by the particular standard or scheme you are reporting to, so be sure that you have chosen GWPs that are in compliance with your specific reporting goals.

Green Tariffs

There has been confusion about whether purchasing green tariff electricity entitles the purchaser to claim zero or low emissions from their electricity consumption. This briefing note explains why, for the purposes of greenhouse emissions reporting, green tariffs generally do not entitle the purchaser to claim zero or low emissions.

EU Emissions Trading Scheme

The EU has taken a decision to improve and extend the EU Emissions Trading Scheme (ETS). The European Commission proposed a series of changes to the ETS, which were agreed by EU member states – though with some significant amendments – and passed by the European Parliament. New legislation has now been adopted and the […]

Introduction of Aviation into the EU ETS

On 2 February 2009, Directive 2008/101/C formally brought aviation into the European Emissions Trading Scheme (EU ETS). Aviation activities will be included in the EU ETS from 1 January 2012, although aircraft operators will have to submit benchmarking plans by 31 August 2009 and verified pre-compliance emissions reports by 31 March 2010. All flights arriving […]

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