Scotland's generating capacity will be severely reduced when Hunterston B closes next year. This may lead to the end of electricity exports from Scotland and put a strain on generation in the rest of the UK, where there could be blackouts somewhere between 2013 and 2016 due to further closures.
Power from wind farms will be useless on a calm day, which means that the planned expansion of renewables is both pointless and dangerous. The electricity gap could only be filled by more gas-fired generation, putting us at the mercy of the countries that now supply much of our gas.
STEUART CAMPBELL
4 Dovecot Loan
Edinburgh