The UK's renewable energy supply grew significantly from 2013 to 2023, starting at 5.6 units of Total Primary Energy Supply in 2013 and reaching 13.9 units in 2023. This represents a cumulative average growth rate (CAGR) of 14.87% for the initial five-year period and a declining trend to 3.86% CAGR over the last five years. Key year-on-year variations witnessed from 2013 include a peak increase of 24.44% and more moderate growth rates towards the most recent years, with a 3.73% increase in 2023.

The forecast indicates a continued, albeit slower, increase in renewable energy supply up to 16.5 units by 2028, with a forecasted CAGR of 2.62% over the next five years.

Future trends to watch for include:

Advances in renewable energy technologies such as wind, solar, and battery storage.
Government policy changes and incentives to promote cleaner energy sources.
Increased investment in infrastructure to support renewable energy integration.
Market dynamics influenced by geopolitical factors and economic conditions.