The U.S. hydroelectricity generation has displayed fluctuating trends from 2013 to 2023. The value in 2023 stood at 258.3 Terawatthours, reflecting a year-on-year variation of -0.096%. Over the past two years, there has been a mixed trend with a notable decline of 11.96% in 2021 followed by a recovery of 3.85% in 2022. The Compound Annual Growth Rate (CAGR) over the last five years portrays an average annual decline of -2.26%.

Forecasts from 2024 to 2028 predict a stabilization in hydroelectricity generation, maintaining a constant value of 258.31 Terawatthours annually, yielding a forecasted five-year CAGR and growth rate of 0%.

Future trends to watch for:

Potential impacts of climate change on water availability affecting hydroelectric generation.
Technological advancements in hydroelectric efficiency and storage capabilities.
Increasing integration of renewable energy sources and their effects on energy mix policies.