Be that as it may, when we talk of value for money, we usually have in mind the amount of money we would be paying for an item that is subject to immediate use or consumption. The concept loses its meaning, as we have heard, when considering something where consumption is to be deferred and is liable to take place over an extended period. In such cases, we must attempt to envisage the circumstances likely to prevail in the future. This is surely the case for a nuclear power station, the construction of which may take a decade and which is intended to provide a carbon-free supply of electricity for many years. It is envisaged that such power stations will be able to supply the plentiful electricity needed to power a carbon-free economy and to assist in averting climate change.
The appropriate means of determining the value of a nuclear project is to consider the associated opportunity cost. Opportunity cost is a technical term in economics that denotes the opportunities that are forgone by pursuing—or not pursuing—a particular project. It requires a degree of imagination to assess the opportunity cost of a nuclear project, which far exceeds the imagination required in pursuing an exercise in commercial accountancy. I invite the Liberal Democrats to assess the opportunity cost of forgoing nuclear power. In particular, I encourage them to envisage the consequences in terms of economic and social misery that will arise if we fail to create an ample and carbon-free supply of electricity. Their policies are inviting such a failure.