<p>The proportion of energy delivered by any technology is uncertain as it depends on a range of factors—for example future technology costs. The most recent illustrative scenarios for contributions from different energy technologies between now and 2030 were developed by National Grid and published in July as part of the consultation on the draft Electricity Market Reform Delivery Plan. These indicate a range of 10.2% to 11.7% of generation coming from wind in 2016. These figures are calculated on a GB (not UK) basis and refer to the proportion of electricity generation coming from onshore and offshore wind.</p>