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  (Source: Siemens AG)
Project cost $2.84B USD, exploits natural abundance of marine winds

Britain's miles of coasts are home to some of the world's most active marine winds, making them a prime place for offshore wind power.  The nation this week announced the opening of the world's largest marine wind farm installation, a monstrous 630 Megawatt, 175-turbine design dubbed "the London Array".

I. London Array is Turned On

The new farm is the latest bump for the UK, which has more installed offshore wind capacity than any other nation in the world.  The UK currently gets 12 percent of its energy from renewable energy, but it hopes to expand that to 30 percent by 2020.  New offshore wind installations are critical to that goal.

The new farm is located along the coastal border of Kent and Essex, to the northeast of London, facing the North Sea.  It uses Siemens AG's (ETR:SIE) SWT-3.6-120 turbines [PDF] (3.6 MW), which has three blades and a diameter of 117 meters.  The turbines are installed 20 kilometers (~12.4 miles) off the coast.

Here's some videos of the plans and construction of the farm and supporting substation.

The groups have petitioned to expand the installation to 870 MW, adding another 66 turbines to the current count.

II. Green Profit, But Energy Firms are Hungry for More

The new installation is a joint venture owned by Germany's E.ON SE (ETR:EOAN) (30% stake), United Arab Emirates' state-owned Masdar Abu Dhabi Future Energy Comp. (20% stake) and Danish state-owned Dong Energy A/S (50% stake).  It cost a whopping €2.2B ($2.84B USD) to build, but is expected to power a half million homes for at least 30 years.  

Its total annual generation is estimated by the developers to be 2.1 terawatt-hours (tWh) per year, but perhaps a more realistic metric would be 1.65 tWh, if you take the average capacity factor (29.6 percent) of UK offshore wind farms last year.

UK energy costs around 15 pence ($0.23 USD) per kWh [source], so this works out to somewhere between $379.5-483M USD in revenue per year, or roughly $11.4-14.5B USD in revenue over a 30-year lifespan.  However, Prime Minister David Cameron recently announced that the government would mandate incentives to drive the revenue per kWh to three times the base rate, which would be mean over $1B USD in revenue per year.

UK offshore wind
UK companies want longer term guarantees on gov't renewable energy financing commitments.
[Image Source: Siemens]

The UK has 3.3 GW worth of installed offshore wind capacity.  EON estimates the new farm will save 900,000 tons of carbon emissions per year.

While it appears to be a booming era for UK offshore wind, the manufacturers and energy companies are a bit disgruntled at the lack of longer term guarantees from the UK central government.  They wanted plans to run through 2030, but only got targets for 2020.

Greenpeace Executive Director John Sauven tells Bloomberg, "[David Cameron's administration] needs to give the sector long-term certainty by agreeing to cut carbon completely from our electricity sector."

Sources: London Array [press release], Bloomberg

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RE: Idiots...
By greenchinesepuck on 7/5/2013 4:41:01 AM , Rating: -1
What uranium? Stevo, get with the times man, what uranium shit ya talking about? Thorium is the future and LFTR is its prophet. Wake up and smell the mainstream power generation tech of the 22nd century! (possibly even the only one as I expect LFTR will nearly kill all the other forms of power generation sue to pure economical reasons)

Man I'm serious, if you've never heard of LFTR then you don't know whatcha talkin' about

RE: Idiots...
By StevoLincolnite on 7/5/2013 5:33:58 AM , Rating: 2
For the love of god, do try and put at-least a little effort into your post.

As for your point about Thorium, that's all well and good, but the majority of reactors on the planet today don't use it. (That's Hundreds, in-case you needed to know.)

Plus, it's still a fuel, read my last post as all the points still stand.

RE: Idiots...
By Mint on 7/5/2013 12:44:17 PM , Rating: 2
You didn't make many good points.

Nuclear doesn't need to use freshwater. Seawater cooling is common.

Uranium production isn't a problem, because the supply has been shown to be effectively infinite if ore price goes up by 5-10x (it can be extracted from the sea). Such a price hike would only increase electricity price by ~0.5c/kWh.

Nuclear's main problem in the UK is that they have rather sucked at it, resulting in some of the highest prices in the world. That doesn't necessarily have anything to do with the future, but it doesn't bode well.

Given this incompetence, I can see why the UK isn't very hot on nuclear.

RE: Idiots...
By StevoLincolnite on 7/6/2013 5:20:57 AM , Rating: 1
Nuclear doesn't need to use freshwater. Seawater cooling is common.

Right, because places like the middle of Australia has ample supplies of *any* type of water.

RE: Idiots...
By Mint on 7/8/2013 5:40:54 AM , Rating: 2
85% of Australia's population is within 50km of the coast, 99%+ within 200km.

There's also something called power lines, FYI.

RE: Idiots...
By mjv.theory on 7/5/2013 5:42:37 AM , Rating: 2
It is not so much Thorium rather than Uranium, it is Molten Salt Reactor technology that is the Silver Bullet. LFTR (i.e. a breeder) is very compelling, but running with denatured uranium (i.e. a burner) is also very efficient and much simpler. Using DMSRs (Denatured Molten Salt Reactors) we could generate 2500GW of electricity (i.e. the world's present electrical generation) without any increase in uranium mining (about 60-65,000 tonnes), and in the process, eliminate the mining of 7 BILLION tonnes of coal. That's 2500GW with DMSRs versus the 400GW presently generated by uranium. And because MSRs are so much more efficient than LWRs (Light Water Reactors) they can withstand huge increases in the price of uranium. And if the price rises then massive amounts of, what is presently uneconomical, ore, would become available. The first MSRs will be running in about 10years time and then the joke that is wind and solar, and LWRs I might add, will be glaringly apparent. Whether LTFRs then go on to dominate, or simply uranium, is less important than the liquid fueled reactor technology itself.

RE: Idiots...
By Mint on 7/5/2013 4:24:06 PM , Rating: 2
I see you've been following the work of Dr. David LeBlanc!

He certainly makes a fabulous case for the DMSR. I really love how he found the perfect application - steam heating for the oils sands industry - to work on a barebones DMSR before going into electricity production.

RE: Idiots...
By mjv.theory on 7/6/2013 3:20:38 AM , Rating: 2
yeah, I follow his work closely

RE: Idiots...
By KOOLTIME on 7/5/2013 11:06:19 AM , Rating: 1
Thorium is not any future as its not a good metal conductor to make it work as an energy source. There is a reason Uranium is chosen vs "ALL" other metals, don't be naive in thinking other sources were not tested/considered in the use to generate power as well, they all were.

RE: Idiots...
By mjv.theory on 7/5/2013 12:24:04 PM , Rating: 2
Thorium is not any future as its not a good metal conductor to make it work as an energy source.

What?...exactly how thick are you?

What has being a good or bad conductor got to do with anything?. I have a sneaking suspicion that you don't understand the process of using Thorium as an energy source.

Thorium232 (i.e the Thorium that is dug out of the ground) can absorb a neutron and become Thorium233, which decays into Protactinium233, which decays into Uranium233. When U233 is hit by a neutron it can fission and release more neutrons to fission more U233 and to breed more Th232 to become U233.

There is a reason Uranium is chosen vs "ALL" other metals

Yes, there is a reason and you are evidently ignorant of that reason. It is because only U233, U235 and Plutonium239 fission.

Thorium is very abundant, very cheap and can be "burnt" to almost 100% efficiency using a Liquid Fluoride Thorium Reactor (LFTR, pronounced as LiFTeR). The reasons for the rise to dominance of LWRs are entirely political and not based on cost, safety, efficiency or waste minimisation. If those factors had been examined without political prejudice, then molten salt reactors, quite possibly LFTRs, would have been commercialised rather than Light Water Reactors (LWRs).

"Nowadays, security guys break the Mac every single day. Every single day, they come out with a total exploit, your machine can be taken over totally. I dare anybody to do that once a month on the Windows machine." -- Bill Gates

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