Products and Tools


Greenhouse Gas Emissions Management System

Carbon Tools
Categorized Under: Climate



ICF International's Greenhouse Gas Emissions Management System (GEMS®) is a concept and framework for managing economic emission reductions, not just an inventory tool. GEMS® enables the user to directly evaluate alternative lower emission technologies and track changes to manage risk and evaluate potential GHG reduction investments.

GEMS® provides a unique approach where emission sources are drilled-down to the technology level to provide a Tier IV inventory. GEMS is API Compendium compatible and is completely transparent with respect to data and calculations. It covers methane (CH4), carbon dioxide (CO2), and nitrous oxide (N2O) emissions from the natural gas and petroleum industries. The powerful features of GEMS® are already being used by several large natural gas companies.

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