The bar graphs given illustrate the contributions of renewable and non-renewable sources of energy towards the production of electricity in the United States observed in a 10 years timespan: 2009 to 2019. The data measures the electricity generated in billion kilowatt-hours. The renewable energy sources taken into consideration are Solar, Wind, Geothermal, Plant/Animal Matter, and Hydroelectricity. On the other hand, the non-renewable sources addressed are Petroleum, Renewables, Nuclear, Natural Gas, and Coal.
Overall, the power generated by renewable sources has either displayed an increase or remained the same over time. The largest incline can be observed in Wind energy, which rose to 300 billion kilowatt-hours from 94 billion kilowatt-hours in the 10-year timeline. This is followed by Solar and Geothermal sources that rose from 1 billion kilowatt-hours to 73 billion kilowatt-hours and 15 billion kilowatt-hours to 16 billion kilowatt-hours from 2009 to 2019, respectively. Unlike the rest, electricity sourced from Hydroelectric methods remained constantly at 273 billion kilowatt-hours throughout the timespan.
Moving on, the non-renewable sources have displayed varying trends in their share of electricity. Natural Gas has shown the largest increment in power production: from 921 billion kilowatt-hours to 1582 billion kilowatt-hours. Another noticeable rise in electricity was observed in Renewables. They began at 437 billion kilowatt-hours in 2009 and rose to 720 billion kilowatt-hours in 2019. The Nuclear technology, on the other hand, has displayed a mere 10 billion kilowatt-hour increase in its contribution to electricity: from 799 billion kilowatt-hour to 809 billion kilowatt-hour. In contrast, the steepest fall was observed in the electricity generated by Coal, which plummeted from 1756 to 966 billion kilowatt-hours. This was followed by a minor decrement in Petroleum sourced electricity in the same timeline: from 57 billion kilowatt-hours to 40 billion kilowatt-hours.
In summary, the renewable sources of energy displayed a positive trend in their electricitiy generation from 2009 to 2019. In the same window, the non renewable sources had varying levels of progress involving inclines and declines.