In January 2014 the building of the first dry spent PWR nuclear fuel store in the UK began at Sizewell B, where the existing spent fuel pool, which stores spent fuel under water, was expected to reach full capacity in 2015. It is intended to enable spent nuclear fuel produced from 2016 until at least 2035 to be stored at Sizewell B until a deep geological repository is available. In March 2017 the first cask containing spent nuclear fuel was installed.