Critical point

According to the article ‘Save and prosper’ ‘the use of digital automation is claimed to boost the efficiency of coal-based electricity generation by more than 50 per cent.’


According to the article ‘Save and prosper’ (Production Engineering, 15 September) ‘the use of digital automation is claimed to boost the efficiency of coal-based electricity generation by more than 50 per cent.’

I think that someone is pulling our legs somewhere. I suspect that what the writer meant to say was that the use of ultra-supercritical steam conditions can boost efficiency of coal-based electricity generation by more than 50 per cent.

Alain Foote

Alstom, Rugby