Norwegian energy groups to build new British wind farm

Jul 01, 2014
A photo taken on January 18, 2013 in Stavanger, Norway, shows the entrance of the headquarters of Norwegian partially state-owned oil group Statoil

Norwegian energy companies Statoil and Statkraft said Tuesday they will build an offshore wind farm in Britain with 67 turbines that will eventually power over 400,000 homes.

The groups will invest one billion pounds (1.25 billion euros, $1.71 billion) in the Dudgeon project.

The will be located 32 kilometres (20 miles) offshore, north of the town of Cromer in Norfolk, and will have a total capacity of 402 megawatts.

"This is in line with our commercial and stepwise approach to renewable ," Statoil executive vice president Eldar Saetre said in a statement.

Dudgeon is expected to power up around 410,000 homes by 2017.

The wind turbines themselves will be built by German company Siemens.

Explore further: Cape Wind, Siemens agree to Siemens turbines for offshore wind farm

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Eikka
1 / 5 (2) Jul 01, 2014
that will eventually power over 400,000 homes.


Megawatts, please.

and will have a total capacity of 402 megawatts.


Estimated capacity factor, please.

These figures are meaningless when "average household" remains undefined, and the actual output of the wind farm capacity is left unmentioned. That means this article merely pretends to provide information, but in reality it's just trying to impress the clueless with large numbers.

Given a realistic 0.25 capacity factor for the turbines, the "average household" turns out to consume just 250 Watts of power, so someone is clearly trying to pull a fast one.
Eikka
1 / 5 (2) Jul 01, 2014
In comparison, the average UK household consumes 530 W on average.

That means the wind farm would have to operate with a capacity factor of at least 0.52 to meet the claims, but the average capacity factor of wind farms in the UK was 0.285 in 2013 and even in the best times never exceeded 0.44
strangedays
not rated yet Jul 01, 2014
Eikka -
Given a realistic 0.25 capacity factor for the turbines


Where does your figure of 0.25 come from? I think it should be considerably higher than this. Here is one resource -

http://energynumb...nd-farms
strangedays
not rated yet Jul 02, 2014
Dong Energy has achieved some pretty impressive capacity factors.

http://www.stateo...-Records
Bob_Wallace
not rated yet Jul 05, 2014
The purposed Hinkley Point nuclear plant -
16 billion pounds, 5 million homes = 3.2 billion pounds per million homes

Dudgeon wind farm -
1 billion pounds, 0.41 million homes = 2.4 billion per million homes

Dudgeon projected to be on line by 2017. Hinkley, well, they might start construction by then.
Roderick
not rated yet Jul 06, 2014
Bob,

Your analysis misses the point. You can't control the wind. In contrast, a nuclear power plant can be controlled.

Wind and solar power are just useful as peak load capacity.

The bulk of European solar power is generated during the summer months. But economic activity, as measured by real GDP, is highly seasonable with the strongest quarters being 4th and 1st of each year. That is why economic data is seasonally adjusted. So green power is generally not available when we need it.
Bob_Wallace
not rated yet Jul 06, 2014
You can control a nuclear plant. At least some of them. They can be ramped down somewhat when demand is low.

The problem is that: 1) Nuclear is already very expensive, about 3x the cost of onshore wind in the US. 2) Ramping down nuclear makes it even more expensive. The cost of nuclear is determined by taking the total cost and dividing by the MWh produced per year. If, for example, nuclear run full out (90% of the time, 10% for refueling and routine maintenance) = 12 cents/kWh and then you run it at half speed 50% of the time the price of electricity rises to 15 cents/kWh.

It's cheaper to power a grid with wind + solar + storage than with nuclear. Much cheaper than load-following nuclear or nuclear + storage.

BTW, the wind tends to blow harder during the 1st and 4th quarter.

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