<p>From 2018, the Capacity Market will ensure that retiring plant can be replaced by new investment by providing additional secure investment for both existing and new electricity generators. In the meantime, National Grid secures adequate loss of load expectation through the Contingency Balancing Reserve in which additional power stations are held to provide security in times of system stress.</p><p>Both facilities deliver against the statutory reliability standard of 3 hours of loss of load expectation, a level as high as anywhere else in Europe. Loss of load expectation does not equate to the number of disconnections in a year, but is the estimated number of hours in a year that the System Operator (National Grid) needs to intervene in the market in order the maintain supply. For 2015/16, National Grid procured 2.4GW of reserve to deliver a loss of load expectation of 1.1 hours, sufficient to maintain security of supply even in the toughest system conditions.</p>