The two pie charts illustrate the percentage of electricity generated from various energy sources in Scotland, comparing figures from 20 years ago with last year.
Overall, a notable shift occurred over the period, with a move away from fossil fuels, especially coal, towards a more diverse energy mix, including a significant rise in renewable sources like wind power.
Twenty years ago, coal was the primary source of electricity, accounting for 40% of generation. This figure dramatically decreased to 15% last year. Natural gas also saw a slight reduction, from 25% to 20%. In contrast, nuclear power increased its share, moving from 20% to 25% over the two periods.
Renewable energy sources experienced growth. Hydroelectric power increased from 10% to 15%, while wind power, which only contributed 3% initially, rose significantly to 20% last year. The category of 'other' sources also saw a small increase, from 2% to 5%.