I alluded to the solar metering in my other comment. Here is what it says on the G.B. National Grid Status site. > This is the total demand of the entire count

I alluded to the solar metering in my other comment. Here is what it says on the G.B. National Grid Status site. > This is the total demand of the entire country (plus or minus exports) less any unmetered generating sources like wind (about half as much as is shown on the meter) and solar installations (average about 0.25GW, mostly in summer). > As no solar PV to date is metered centrally, we cannot show real time figures on solar PV power yet. It appears only as a mid-day dip in overall demand, on the demand graph. There is data for France (but the quality may be dubious): http://gridwatch.templar.co.uk/france/ http://gridwatch.templar.co.uk/france/ > This is the metered solar farms. Yes, don't ask me why there is 10MW at night, a fact that is airbrushed out of RTE's user friendly website...