It’s not so much of an idea – but what actually happens with unmetered electricity supplies; particularly applicable to street lighting.
Each and every street lamp within a local authority area will have an assigned power rating; this combined with the period of illumination will allow the authority to calculate the cost, and therefore how much they pay in total to the relevant power provider.
Inevitably there will be some error in the calculation versus the actual energy used, especially if a large number of street lights are controlled by a light sensor rather than a timer.
Although there is scope for fraud on behalf of local council’s – they are not the ones paying the bill, it is you and me, so they have very little to gain by being dishonest. Undoubtedly there will be audits to check the reasonableness of the reported energy usage.
Many local councils have realized that they can save money by switching street lights off from midnight until the early hours – claiming that it helps the environment by saving energy and reduces light pollution of the night sky – but for some reason this does not result in a reduction in council tax bills.