On an emissions-per-megawatt-produced basis, Entergy is one of the cleanest utilities in the U.S. Direct carbon dioxide (CO2) emissions from Entergy's power plants are measured by continuous emissions monitors and are reported and verified in accordance with detailed federal quality assurance regulations and international standards. Entergy strives to continually lower its emissions profile from the electric generating fleet through nuclear uprates and gas turbine power development strategies such as our recently completed Ninemile 6 combined cycle gas turbine (CCGT) unit.

In the latest comprehensive analysis of U.S. power plant emissions from the 100 largest electric power producers, Entergy is the sixth-largest producer of electricity and ranks fifth in the production of zero-emitting energy. Entergy’s CO2 emission rate is the fourth lowest among the top 20 privately-owned and investor-owned power producers.  

Entergy's investments in fleet transformation and nuclear uprates have greatly reduced both absolute air emissions and emission rates since 2000. Over the past 12 years, we have added approximately 6,000 MW of clean, highly efficient combined-cycle gas turbine generation. CCGT plants are highly efficient at reducing the amount of fuel burned per kilowatt hour of energy produced, thus greatly reducing emissions. Entergy's strategy has allowed the deactivation of over 5,200 MW of older, less efficient gas or oil units. Since 2000, while our annual electric generation grew by 18 percent, our investments in clean energy capacity have resulted in:

  • 70 percent reduction in absolute NOx emissions and 75 percent reduction in NOx emission rates;
  • 32 percent reduction in absolute CO2 emissions and 43 percent reduction in CO2 emission rates; 
  • 62 percent reduction in SO2 emissions and 68 percent reduction SO2 emission rates; and
  • 91 percent reduction in Hg emissions and 92 percent reduction Hg emission rates.

Read more:

Entergy GHG Inventory Documentation and Data

American Carbon Registry – Entergy GHG Registry Account

2018 GHG Documentation

2017 GHG Documentation

2016 GHG Documentation

2015 GHG Documentation

2014 GHG Documentation

2013 GHG Documentation

2012 GHG Documentation

2011 GHG Documentation

Greenhouse Gas

Water Performance