Monday, 23 May 2016

Offshore Wind - Guess What ! - THE BIGGER THE TURBINES, THE MORE IT ALL COSTS !!!

Hot off the press:  23/05/2016 9:38 am

Beatrice Offshore Wind Farm is rated at 588 MW and will cost £2.6 billion. It uses 84 of the latest 7 MW wind turbines nearly 4X the height of Nelson's Column [651 ft].

That's a costs £4.42 Billion/GW installed.

Beatrice will supply 450,000 homes which works through to a Capacity Factor of 35.9%

It's 'Operational Phase' is 25 years. So over its working life it will deliver 46.2 TW hours of intermittent, low-carbon electricity.

By contrast, Hinkley Point C Nuclear Power Plant will deliver 1513.7 TWh of 24/7, on demand, low-carbon electricity.

33 offshore wind farms, the size of Beatrice, would have to be constructed to deliver the same units of electricity as Hinkley.

33 x £2.6 billion = £85.8 billion.

Hinkley will cost £18 billion, so:

 For this money, nuclear power would supply about 4.77X more low-carbon electricity (24/7, on demand). 

From that website slide, the area of Beatrice 'eyeballs' at about 18 km x 8 km = 144 sq km

33 such windfarms would occupy an area of 4752 sq km, which is near enough 70 km x 70 km.
That's about the area of the sea's surface shown on the inset map.

Hinkley sits on a site 0.69 sq km in size.