Archive for intermittency
Wind Power and Reliability: The Roles of Baseload and Variable Resources
Federal Energy Regulatory Commission (FERC) Chairman Jon Wellinghoff has stated that “baseload capacity is going to become an anachronism” and that no new nuclear or coal plants may ever be needed in the United States.
Quote from Press Release:
“1. This fact sheet explains why baseload power is only one of many ways to meet the power system’s need for energy and capacity, particularly in a world where a variety of other resources can provide these commodities at competitive prices. In addition, this fact sheet illustrates that, because baseload power has little or no flexibility, baseload power alone is insufficient to meet all power system needs. A combination of a large amount of renewable energy, combined with flexible natural gas plants and demand-response and efficiency, can ensure that our electric system has sufficient energy, capacity, and flexibility, and operates reliably and cost-effectively. The marketplace is already pointing in the direction described by Chairman Wellinghoff: since 2005, natural gas and wind power have accounted for nearly 90% of all new U.S. generating capacity……”
Continued at: US FERC John Wellinghoo
More wind energy at: http://www.claverton-energy.com/energy-experts-library/downloads/windenergy
More energy files at: http://www.claverton-energy.com/energy-experts-library/downloads
Also:
Wikipedia Intermittency article
Wikipedia Wind Energy article
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
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→