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1. Integrated Gasification Combined Cycle (IGCC)

   An Integrated Gasification Combined Cycle, or IGCC, is a technology that turns coal into gas - synthesis gas (syngas). It then removes impurities from the coal gas before it is combusted. This results in lower emissions of sulfur dioxide, particulates and mercury. It also results in improved efficiency compared to conventional pulverized coal.

2. Intergovernmental Panel on Climate Change (IPCC)

   An international scientific panel charged with informing the UNFCCC with the latest scientific evidence on climate change. With representatives from 130 nations it is the world's pre-eminent scientific advisory body on global warming.

3. Internal Abatement

   In emissions trading terminology, the act of reducing one's own emissions for compliance purposes, e.g. through technology upgrades and fuel switching, as opposed to buying allowances/offsets or scaling down production.

4. International Emissions Trading (IET)

   International Emissions Trading (Article 17 of the Kyoto Protocol) specifies that Annex I countries be allowed to trade assigned amount units (AAUs) with each other.

5. International Transaction Log (ITL)

   The means by which carbon allowances and credits generated under the mechanisms of the Kyoto Protocol - AAUs, CERs and ERUs - are traded between countries. An online IT platform that connects UN and national greenhouse emissions registries, facilitating the emerging global carbon market.

6. Inventory

   Country report, under the Kyoto Protocol, on anthropogenic GHG emissions and removals delivered on a regular basis according to the IPCC guidelines.

7. Issuance

   Issuance refers to the instruction by the CDM Executive Board to the CDM registry administrator to issue a specified quantity of CERs for a project activity into the pending account of the Executive Board in the CDM registry.