Sorry, should have said watch the demand meter for movement as a gauge of current national consumption.
The frequency meter will indicate the level of surprise the grid controllers are under :) They increase the frequency in response to increasing demand and reduce it in response to drops, As this is largely done on the advice on an experienced human amongst other things it basically indicates the level of astonishment of the decision maker as a virtual number, centred around 50Hz, Think of a generator RPM slowing down underload and with quite a high degree of operator lag - you get the idea. -- sent via Gmail web interface, so please excuse my gross neglect of Netiquette
