The data present the percentage of electricity produced by different energy sources in Scotland about 20 years ago and last year. From 20 years ago until last year, the use of renewable energy increased, while the use of non-renewable energy declined, except for oil.
By comparing these two graphs, we can see that over the past two decades Scotland has experienced nearly a 10% growth in the use of renewable energy to generate electricity, rising from 34.2% to 41.6%. Fortunately, the use of fuel has decreased by approximately 8% compared with two decades ago, falling from 65.8% to no more than 58.4%.
Most of the changes are illustrated in coal and nuclear energy, and these changes are quite positive. The use of coal has been, and continues to be, the most important source for meeting electricity needs, although it has shown the greatest decline during this period. Nuclear energy, on the other hand, has increased significantly by about 6.8%.
Although the pace of change over the twenty years was slow, the reduction in the use of non-renewable sources is a positive trend, especially as they are being gradually replaced by renewable ones.