"obviously you can't improve the efficiency of old technology power stations otherwise they would have done it to improve their profit margins."
would they now?
I guess that you've never heard the word 'complacency', or if you have, then it's meaning gives you some kind of difficulty
you appear to be totally unaware that inside major businesses and corporations sits more often than not a dysfunctional organisation filled with egotistical and fearful people; most of whom have no idea of what they are doing
someone who really knows what they are doing (and they are very very rare animals) can walk into an industry or business and have a list of improvements pages long within hours
the coal fired power industry is probably like many others, dinosaurian
