Chris Hogg posted
On Wed, 17 Aug 2016 11:04:33 +0100, Andrew
wrote:

On 16/08/2016 21:53, tony sayer wrote:
In article ,
harry scribeth thus

http://www.independent.co.uk/news/uk...indfarm-climat
e-change-
global-warming-biggest-offshore-planning-where-a7193576.html


Course what the silly green moo forgets that on days like today the
freaking wind output is sod all so on windless days and they still think
that a few offshore wind farms will have sufficient wind blowing to
cover the shortfall.



According to the BBC text news, it will supply power for 2 million
homes. I don't think so, not even in a gale.

Certainly not in a gale - they will shut down.

But Ofgem reckons the average medium sized house uses 3,100kWh per
year http://tinyurl.com/h9kz4w7 , or an average rate of 0.353kW. The
average output from Hornsea 2 will be 0.7GW, allowing for a claimed
39% load factor on 1.8GW, so they can reasonably claim to be able to
supply 2 million homes at the 0.353kW rate (1.98 million homes to be
exact, if one can be exact about these things). On the same basis,
Hornsea 1 will supply a little over 1 million homes. But that's the
trouble with averages like that in this situation. They tell you
nothing about the doldrum days.

Or peak demand. Presumably that 0.353kW average demand per home is
averaged across time as well as homes. So if there are times of day when
everybody has things running full blast the total demand is much higher.
And that peak demand figure is what the grid has to be built to deliver.

--
Les