Greenhouse Gas Emissions Inventory

Greenhouse gas emissions (GHG) are the primary cause of global warming and climate change. These emissions largely derive from burning fossil fuels for energy and transportation and the decomposition of our waste. The City completed inventories of community-wide emissions for the years 2014 and 2017. The 2014 inventory estimated 3.6 million metric tons of CO2e and the 2017 indicated a small reduction to 3.5 million metric tons of CO2e. The refreshed priority list and goals laid out in this document are based on the 2017 inventory as it is more recent.

The City is actively compiling its 2021 inventory and will be releasing a progress report on it in early 2023.

The inventories were assembled according to the Global Protocol for Community-Scale Greenhouse Gas Emission Inventories (GPC), a reporting standard developed for cities by the World Resources Institute (WRI), C40 Cities and ICLEI-Local Governments for Sustainability (ICLEI).

The inventory summarizes community-scale greenhouse gas (GHG) emissions that result from processes and activities occurring within the boundaries of Orleans Parish as organized in three sectors:

  • stationary energy
  • transportation
  • waste

This inventory does not include emissions as a result of industrial processes, agriculture and forestry, aviation, and off-road transportation. The City uses emissions reporting to the U.S. Environmental Protection Agency and the Louisiana Department of Environmental Quality for some information, but cannot rely only on a direct measurement of GHG emissions at their source; therefore, this inventory employs a calculation-based methodology that involves the conversion of GHG-inducing activities into emissions based on specific emissions factors.