The graph illustrates the quantity of electricity generated by six distinct energy sources over a given period. Overall, it is evident that fossil fuels accounted for the largest share of electricity production, though renewable energy sources showed a notable increase over time.
Natural gas and coal were consistently the two highest contributors throughout the period, together making up the majority of total electricity output. Coal production remained relatively stable for much of the timeframe before experiencing a modest decline in the latter years, whereas natural gas showed a more gradual but steady upward trend, eventually surpassing coal as the leading source by the end of the period.
Among the renewable sources, wind energy demonstrated the most significant growth, rising sharply from a relatively low base to become a considerably more prominent contributor by the final year. Solar power also increased, though it remained a considerably smaller proportion of the total compared to wind. Hydroelectric power, while a consistent source of electricity throughout, showed little change over the period and remained at a broadly stable level.
Nuclear energy occupied a middle position among the sources, maintaining a fairly steady output with only minor fluctuations. It neither experienced the dramatic growth seen in wind power nor the decline observed in coal.
In conclusion, while conventional energy sources such as coal and gas continued to dominate electricity production during the period shown, the data suggests a clear shift towards greater reliance on renewable energy, with wind power in particular emerging as an increasingly significant contributor to the overall energy mix.