The gross electricity production from hydro power in the UK has fluctuated over the past decade, peaking at 32.53 thousand Terajoules in 2015 and declining steadily since 2018. In 2023, the production stood at 27.76 thousand Terajoules, reflecting a decline from previous highs. Year-on-year variation showed modest improvement in 2021 (+6.91%) and slight declines in 2022 (-2.37%) and 2023 (-0.41%). The average annual change over the last five years shows a small decline with a negative CAGR of -0.59%.
Future projections indicate a continued gradual decrease in hydro power production, with forecasts reaching 27.19 thousand Terajoules by 2028 and an estimated average yearly drop of -0.35% over the next five years. Trends to watch for include potential impacts of climate variability, technological advancements in hydroelectric efficiency, and policy changes favoring renewable energy.