Globally, solar is the leading renewable source of energy, with 1 terawatt of solar capacity installed by 2022. However, the US has deviated from this trend, with wind energy taking the lead in renewable electricity generation, growing rapidly to reach 435 terawatt-hours by 2022, which is 6x that of 2015. The US also exhibits a significant reliance on hydroelectric power, which constitutes 28.7% of its total renewable electricity generation and is the US's second largest renewable energy source. Geothermal and biomass in the US have experienced stagnant growth since their introduction, exhibiting low growth rates in electricity generation over the years.