The interesting news item on the Cambridge project linking photovoltaic energy and hydrogen (NCE last week) needed some estimate of cost.
It also needed an explanation of how demand will be balanced over summer and winter, bearing in mind the 10:1 variation in supply one might expect.
The item was also spoilt by an irrational swipe at nuclear power. As long as fossil fuels make up the balance of our energy demand, any reduction in nuclear power means CO2 emissions and global warming will be worse than necessary, and this consequence must be faced.
Personally, I do not understand the fashionable prejudice against nuclear. I would be happier living adjacent to a nuclear power station than an oil refinery, and have enough confidence in my fellow engineers to feel safer living above a nuclear waste store than above the granite in Cornwall.
Richard Balmer (M), 79 Links Drive, Solihull, B91 2DJ