In those cases, the energy allocation method is the most appropriate method, as it is easy to apply, is predictable over time, minimises counter-productive incentives and produces results that are generally comparable with those produced by the substitution method.
Sna cásanna sin, is é an modh leithdháilte fuinnimh an modh is iomchuí ós rud é go bhfuil sé éasca é a chur i bhfeidhm, go bhfuil sé intuartha le himeacht ama, go ndéanann sé dreasachtaí fritorthúla a íoslaghdú agus go mbíonn torthaí air a bhíonn inchomparáideach, den chuid is mó, leis na torthaí a bhíonn ar an modh ionadaíochta.