Tennessee Valley Authority
For the period ended Sep 30, 2025. Filed Nov 13, 2025.
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FY2025 · Filed Nov 13, 2025
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Weather and Seasonality
Weather affects both the demand for and the market prices of electricity. TVA's power system is generally a dual-peaking system in which the demand for electricity peaks during the summer and winter months to meet cooling and heating needs. TVA uses degree days to measure the impact of weather on its power operations. Degree days measure the extent to which the TVA system 23-station average temperatures vary from 65 degrees Fahrenheit. See Item 1, Business —Flood Control Activities, Item 1, Business —Environmental Matters — Climate Change — Physical Impacts of Climate Change, Item 1A, Risk Factors — Risks Related to the Environment and Catastrophic Events, and Part II, Item 7, Management's Discussion and Analysis of Financial Condition and Results of Operations —Results of Operations—Sales of Electricity.
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