backtop


Print 82 comment(s) - last by kingius.. on Oct 13 at 4:13 AM


The new Thanet wind farm produces 300 MW of electricity, making it the world's largest offshore wind farm.  (Source: Vattenfall AB)
Nation now has 5 GW of installed wind capacity, enough to provide 4 percent of its power needs

In the United Kingdom today, excitement was afoot as the world's largest wind power installation went online.  The 300 MW farm was constructed by Swedish alternative energy firm Vattenfall AB.  It is located on the North Sea, on the east face of the island, approximately 2 hours east of the capital city of London.

England's Secretary of State for Energy and Climate Change Chris Huhne comments, "The U.K. is going to be the fastest-growing market for renewable energy anywhere for the next couple of years.  We will urge the wind industry to install 10 times more capacity by 2020. To this end, we are currently talking to General Electric and companies such as Siemens and Mitsubishi will play a part."

The nation aims to get 15 percent of its power from alternative energy by 2020.  With the latest addition the country now gets 4 percent of its power from wind.  Wind is arguably England's greatest alternative energy resource; as it is at a northern latitude it doesn't get quite as much direct sunlight, but its sea-bordered location makes for steady winds.

The new farm, located near the city of Thanet, the farm increases Britain's offshore wind total to 1,341 MW.  With its 3,715 megawatts of onshore wind, the nation now has over 5 GW of total wind power capacity -- enough to power an estimated 2.7 million homes.

The project is estimated to cost £800M (roughly $1.253B USD) according to Top News UK, or £900M (roughly $1.409B USD) according to Bloomberg.

The installation covers 35 km2 and consists of 100 Vestas Wind Systems A/S V90/3000 wind turbines.  The V90 is an example of the growing class of "super-turbines" designed for offshore use.  It generates 3 MW of power at peak and its blades span 90 meters.

Deploying offshore wind power is logistically tougher, as it requires you to install turbines at sea that can withstand ocean storms, and additionally to install undersea transmission cables.  However, it has the potential to generate more electricity than onshore installations, due to the stronger wind currents -- which in turn may lead to lower cost per kWh than tradition onshore turbines.

As opposed to the onshore wind power industry, which is dominated by established players, the offshore wind power industry is just now taking off.  The UK is working to position itself at the center of that new industry.

And early indications are that those efforts are yielding success; a number of companies -- General Electric Co., Siemens AG and Clipper Windpower Plc -- recently announced plans to build offshore wind turbine factories in the UK.  RenewableUK Chief Executive Officer Maria McCaffery comments, "The onshore wind supply chain is already well established in Germany, Denmark and Spain. Nobody has an onshore wind supply chain, and we want that to be here. U.K. manufacturing protects us totally from exchange-rate fluctuations."

The UK is aiming for 13 to 14 GW of installed onshore wind power capacity by 2020, as well.  It recently approved 32.200 GW in projects, giving licenses to Centrica Plc, RWE AG and Statoil ASA.

The U.S. is currently preparing similar offshore wind projects, but has seen construction and development delayed from lawsuits from a variety of groups including citizens who claim offshore turbines mar their view and damage property values; Native Americans; and environmental activists, who claim the turbines disrupt offshore wildlife.


Comments     Threshold


This article is over a month old, voting and posting comments is disabled

By cannonac on 9/25/2010 8:41:33 AM , Rating: 3
Interesting that this has been brought up.

Chernobyl was a reactor design that would never be licensed in the West. For one thing it has a phenomena called positive power coefficient, which means that if the temperature of the coolant increases, then the power of the reactor also increases. Western reactors are all designed to operate with a negative power coefficient, so they are basically self regulating, to a certain extent.

In Chernobyl, the safety systems were turned off as part of a test (to improve safety, if you believe it) but the operators and the utility didn't really understand how the reactor was going to behave, again, something that wouldn't happen in the west.

So, with the buildup of reactivity (basically, stored power in the reactor), the positive power coefficient and the lack of training, plus control rods that took far too long to motor into the core, we get a multiplication of the power being produced. If I remember rightly, the power produced was 10,000x the rated power of the reactor for an instant.

This heated up the steam so it reacted with the fuel cladding which started to burn, burning the graphite core bricks and causing a steam explosion. There was no containment, so everything was ejected out of the core.

Andy


"It looks like the iPhone 4 might be their Vista, and I'm okay with that." -- Microsoft COO Kevin Turner














botimage
Copyright 2014 DailyTech LLC. - RSS Feed | Advertise | About Us | Ethics | FAQ | Terms, Conditions & Privacy Information | Kristopher Kubicki