 The new Inverclyde unit will only accommodate 80 high-security women prisoners, with the remaining population housed at smaller units at HMP Grampian and HMP Edinburgh and regional custody units each accommodating up to 20 women.The Government also plans to increase use of non-custodial alternatives such as electronic tagging.The new plan called for the Inverclyde unit to open by 2017 and for Cornton Vale to close entirely by 2018.