National Grid’s high case scenario says the price of electricity could double over the next 20 years (Report, 10 July), which it could. But then again, it could halve. Predicting the future is more likely to be wrong than right. What we do know from evidence is that where there is a large percentages of electricity supplied from variable power sources (ie primarily wind and solar), peak electricity prices the most expensive ones during the day and where companies make their profits are falling rapidly, thereby bringing down the wholesale cost of electricity.
We also know from evidence that bills are as low as they can be in an energy system where real efforts are made to reduce total energy demand and improve energy efficiency. Neither of these strategies are being followed with any conviction in Britain.