OFGEM report on problematic future energy supplies – admission of market failure in electricty supplies

The report is at: http://www.ofgem.gov.uk/Markets/WhlMkts/Discovery/Documents1/Project_Discove ry_FebConDoc_FINAL.pdf News articles at: http://news.bbc.co.uk/1/hi/business/8494899.stm http://www.telegraph.co.uk/finance/personalfinance/consumertips/household- bills/7144386/British-households-risk-unaffordable-energy-bills-Ofgem- warns.html http://uk.finance.yahoo.com/news/sse-says-customers-using-less-gas-electricity-reuters_molt-20a544628846.html A little interpretation: Quote: “There is a need for unprecedented levels of investment to be sustained over many years in difficult financial conditions and against a background of increased risk and uncertainty.” To translate, “the fat cats and their shareholders have […]

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What area of wind turbines would be needed in reasonable sites in the UK to in one year generate all UKs power demand?


A 5 MW turbine rotor diameter is 126m ( from the Repower website http://www.repower.de/index.php?id=12&L=1 )

According to Martin Alder, a wind farm owner and developer:

Across wind turbine spacing = 3 x dia (Assume tower to tower)

Down wind turbine spacing = 5 x dia

According to Colin Palmer, of Wind Prospect, a leading wind farm developer, load factors of 30 – 35% onshore, and 40% offshore are readilly achievalbe.

So assume 33%.


Take a 70 mile by 70 mile square. This equals 112 km by 112 km

So downwind, turbine spacing (tower to tower) will be 126 x 3 = 378m. Thus in 70 miles / 112 km we can accommodate (112 x 1000 / 378 ) +1 = 297.3 towers (allowing half blade length to protrude out of area at edges).

Similarly, cross wind, we need 5 x 126 = 630 m. Thus in 70 miles / 112 km we can accommodate (112 x 1000 /630) +1 = 178.8 towers (again allowing half blade length to protrude out of area at edges).

Thus a 70 mile by 70 mile square can accommodate 297.3 x 178.8 = 53,157 turbines..

At 5 MW each, these will generate at peak 265.7 GW.

Assuming reasonable sites and a 1/3 , 33% load factor, this will generate on average 79.73 GW.

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"Nuclear power stations can't load follow that much" – Official

A note from Professor Elliot of the Open University: Nuclear can’t load follow  that much Quotes from EDF’s submission to the UK governments renewable energy staretry consultation: Â Â ‘As the intermittent renewable capacity approaches the Government’s 32% proposed target, if wind is not to be constrained (in order to meet the renewable target), it […]

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A very significant admission by the US FERC chairman that the issue of integrating variable sources of power is not such a big issue

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 […]

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Intermittent energy source – From Wikipedia, the free encyclopedia

Latest version – feel free to comment or edit – strangely, has a large number of refrences from the claverton site. Jump to: navigation, search Erie Shores Wind Farm monthly output over a two year period An intermittent energy source is a source of electric power generation that may be uncontrollably variable or more intermittent than […]

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Is Wind Power Reliable? Capacity Credit of Wind Energy

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 […]

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