In the United Kingdom, normalized electricity generation from hydropower reached 470 thousand metric tons of oil equivalent in 2017. This was an increase of roughly 9 percent compared to the previous year. Moreover, electricity generated from small scale and large scale hydropower had reached 1.3 thousand gigawatt hours and 4.6 thousand gigawatt hours, respectively. By comparison, electricity supplied from pumped storage totaled 2.8 thousand gigawatt hours in 2017.
Since 2008, the cumulative installed capacity of hydropower has also seen increases across all countries in the United Kingdom. In 2017, cumulative installed capacity in England reached 42 megawatts, while it amounted to 1.7 megawatt in Scotland, and totaled 168 megawatts in Wales.
The annual hydroelectricity power reached 1.3 million metric tons of oil equivalent in the UK in 2017. The plant load factor of pumped storage hydroelectricity dropped from 12.2 percent in 2016 to 11.9 percent in 2017, while the load factor from both small scale and large scale hydropower had increased as well.