Archive for back up
This article written by:
Mark Duffield
Senior Account Manager
Contracts and Settlements
UK Transmission – Network Operations
National Grid
National Grid House
Warwick Technology Park
Gallows Hill
Warwick CV34 6DA
Popularity: 7% [?]
Extract from full article http://www.claverton-energy.com/download/316/
See also http://www.claverton-energy.com/download/314/
(This technically numerate, evidence based article, shows that wind does not need any extra back up when it is not windy, due to the blindingly obvious fact that the existing power stations can simply be started – no new ones have to be built. Why this obvious fact escapes other commentators remains a mystery.
Millborrow shows that the extra costs of spinning reserve to cope with the greater variability of wind power is around a mere £7.6/MWh, with 40% wind and no capacity credit, or £5.8/MWh without. ie 0.76p/kWh - 0.58p/kWh.) Read More→
Popularity: 16% [?]
Article in IET queries role of wind power and balancing costs in the UK
Posted by: | CommentsDavid Millborrow is a Claverton participant….
Thanks to Hugh Sharman for forwarding this piece.
This article from David Millborrow seems to pretty much demolish this article..
.. http://www.claverton-energy.com/download/316/
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Quote
” Today, the UK is committed to European Union targets to deliver 35 per cent of electricity from renewables by 2020.
Starting from a base of around 5 per cent, this is an ambitious target with a good many ramifications. Perhaps the greatest of all is over how many gigawatts the UK’s electricity grid can reasonably integrate, given most of the 35 per cent will have to be intermittent wind power.
So far, the debate has been fairly academic because the UK still only has 3.2GW of wind turbines working at around a 25 per cent load factor. Load-balancing a shortfall of up to 800MW – a near-negligible 2 per cent of average demand – when the UK can draw on a theoretical 75GW of power stations is no big deal.
That all changes massively if future projections are to be believed. According to a recent scenario by the National Grid, there will be 19.4GW of offshore wind and 12.9GW of onshore wind, delivering 98TWh in 2020.
Not everyone believes that such targets are achievable – far from it. But the debate on load-balancing wind has come a long way since 2003. The leading authority on intermittency and wind at the time was David Milborrow, and his views shaped prevailing opinion on the matter.”
For full article see http://kn.theiet.org/magazine/issues/0903/putting-wind-up-0903.cfm
Popularity: 6% [?]
UK National Grid talking about wind in the future, when there is a high penetration
Posted by: | CommentsSlide 14 of the presentation labelled future system operation at :
http://www.nationalgrid.com/uk/Electricity/Balancing/operationalforum/2009/
- presented to all and sundry at the Operational Forum (open to all
comers) by National Grid at the Ardencote Manor 2 weeks ago, may interest.
The following three slides after that are also interesting, as is slide
31 – and in the context of slide 31 see
http://uk.reuters.com/article/pressRelease/idUS132487+26-Jan-2009+BW20090126?symbol=NG.L” rel=”nofollow”>
….”The two companies will also be sharing technical information and analysis of the potential economic and performance benefits of fast-response flywheel regulation and wind-related ramp mitigation, in both the U.S. and the United Kingdom”
Popularity: 5% [?]
Is Wind Power Reliable? Capacity Credit of Wind Energy
Posted by: Denis Stephens | Comments (5)Is Wind Power Reliable
The following is a commentary on David Milborrow’s article in “New Power UK/Issue 1/February 2009″.
As David says, you would not design a thermal power generating system which did not have built in reserve. He has answered his comment about those letter writers being unconcerned (or unaware) that there was a shortage of nuclear output during the cold snap in early January. “Why should they have been concerned/aware?” The system is designed for this. Read More→
Popularity: 10% [?]