The solar thermal energy supply in the UK has demonstrated steady growth from 2013 to 2023, rising from 2.01 thousand terajoules to 2.45 thousand terajoules. The year-on-year variations show fluctuations, with notable growth spikes in 2021 (9.8%) and a minor decrease in 2020 (-2.11%). The overall Compound Annual Growth Rate (CAGR) for the past five years is 2.13%. The forecasted data indicates continued growth, reaching 2.72 thousand terajoules by 2028, marking a forecasted 5-year CAGR of 1.59%.

Future trends to watch for include:

Advancements in solar thermal technology that may enhance efficiency.
Government policies and incentives aimed at increasing renewable energy adoption.
Market dynamics such as energy prices and competition from other renewable sources.