Company: TVC
Filing Date: 2025-05-01
Form Type: 10-Q
Source: 0001376986-25-000029
Chunk: 437

Company: Tennessee Valley Authority
Filing Date: 2025-05-01
Form: 10-Q
Item: Part II, Item 5
Chunk 437
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 July 8, 2029.  These plants must continue to comply with the Mercury and Air Toxics Standards that were in effect prior to the May 2024 update.

Climate Change

Emissions.  Emissions of nitrogen oxides ("NOx") and sulfur dioxide ("SO2") began being regulated in 1995 and 1977, respectively.  Emissions of NOx and SO2 have been reduced by 97 percent and 99 percent, respectively, since their initial year of regulation.

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Emissions and Intensity Rates (1)CY 2024CY 2023Nitrogen Oxides (NOx)(2)Total NOx Emissions (MT)14,74313,221Total NOx Emissions Intensity (MT/Net MWh)0.0001070.000098Sulfur Dioxide (SO2)(2)Total SO2 Emissions (MT)19,99217,736Total SO2 Emissions Intensity (MT/Net MWh)0.0001450.000131Mercury (Hg)Total Hg Emissions (kg)49.147.4Total Hg Emissions Intensity (kg/Net MWh)0.00000040.0000004

Notes

(1)  Intensity rates are calculated based on generation from TVA's most recent fiscal year for years indicated and emissions data from the most recent CYs.

(2)  Emissions data is consistent with Edison Electric Institute Environmental, Social, Governance, and Sustainability Report standards, which are based on metric tons ("MTs"), whereas overall CO2 emission rates and baseline reductions from historical levels are based on short tons.

For CY 2024, TVA's emissions of carbon dioxide ("CO2") from its owned and operated units, including purchased power and Renewable Energy Certificate retirement adjustments which reduce the reportable CO2 emissions, were 54 million tons, resulting in a TVA system average, as delivered, CO2 emission rate of 680 lbs/MWh.  This represents a 53 percent and 49 percent reduction in mass carbon emissions and TVA's carbon emission rate, respectively, from 2005 levels.

Cleanup of Solid and Hazardous Wastes

Coal Combustion Residuals.  In August 2015, TDEC issued an order that includes an iterative process