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 Ocean, Wave and Tidal Power

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PostSubject: Re: Ocean, Wave and Tidal Power   Sun Jan 18, 2009 6:19 pm

Auditor #9 wrote:
Quote :
14 January, 2009 14:00 CET
Vattenfall prepares for ocean energy farms in Ireland

Vattenfall has acquired 51 % of the Irish site development company for ocean energy, Pandion Ltd, for EUR 500,000 (around SEK 5 million). The ocean energy developer Wavebob Ltd will hold the remaining 49 % of Pandion and the agreement brings opportunities for further partners to participate.

Pandion has applied for ocean energy sites on the west coast of Ireland, which will be developed for dem-onstration to a commercial size, over 250 MW electricity, when it is technically and economically viable. For Vattenfall the investment in Pandion is a first step towards a leading position on the emerging ocean energy market, fully in line with its planned investments in sustainable energy solutions.

“Ocean energy has large potential to contribute to the implementation of Vattenfall’s climate vision to be climate neutral by 2050. It is important for us to reach our growth targets, which are based on renewables, nuclear power and coal with CCS technology,” says Lars G Josefsson, President and CEO of Vattenfall.

Helmar Rendez, senior vice president Vattenfall AB, explains:

“Ireland’s exceptional wave climate, extensive support schemes, strong political support and appointed areas for exploitation of ocean energy makes establishment there favourable. Quick consent processes are foreseen and Vattenfall has an interest to stimulate the development of the market as well as the technical development. We will remain independent from technology suppliers, and Pandion is technology neutral. The technologies must be further developed and optimised, and the power system concepts need to be integrated, before the technology can be commercially introduced. Establishment of sites with a potential to grow to commercial sites is important for us to support such a development.”

We are doing something right Very Happy Any idea what "the power system concepts" means?
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PostSubject: Re: Ocean, Wave and Tidal Power   Sat Jan 31, 2009 12:02 am

A tidal array across the Severn is coming up for consultation this week in the UK - it could generate 5% of the UKs electricity but it would cost £28bn to construct. There are issues that it will ruin bird habitats but your man in the FT argues that perhaps Global Warming could swamp the birds out of it altogether.

The plant will produce >8GW - Ireland used 4GW in winter peak and I'm thinking that if some kind of scheme like that was doable here then we'd be producing all our electricity naturally from the tides without need for importing coal and oil to do it. We could export some easily probably.

Even if the hegemonic ESB would allow it to go through, at what environmental price are these things constructed?

Severn Barrage 3D
1 min

Quote :
Why the Severn Barrage is not for the birds

By Jonathan Guthrie

Published: January 28 2009 20:06 | Last updated: January 28 2009 20:06

If I said “twaite shad” to you, you would probably feel offended. It does sound like a West Country insult, as in: “That Elvis is a twaite shad when he’s on the scrumpy.” But the phrase describes a self-effacing type of herring likely to be incommoded by a £28bn scheme to tame the wilful Severn Estuary and generate 5 per cent of the UK’s electricity.

The spawning of twaite shad could be disrupted by the project, which would sling a 10-mile barrage across the sea between Weston and Cardiff. It would also displace thousands of migratory birds, by covering mudflats where they dine.

Too bad. The proposal, one of five tidal schemes shortlisted by the government for consultation this week, has huge advantages. It would generate up to 8.6GW of electricity simply by harnessing the gravitational pull of the Moon, which twice daily drags water into the natural funnel of the Bristol Channel. As the tides ebbed and flowed, turbines in the barrage would spin, lighting homes and powering factories.

Here is a chance to make serious progress towards the UK’s target of getting one-fifth of its energy from renewable sources.

The other opportunity is of the kind that has previously tempted pharaohs and Ming emperors. It is to leave a praiseworthy monument. Our generation otherwise risks being remembered as the “Loser-bethans”, a degenerate breed who pulled off the egregious feat of wrecking the economy and the environment simultaneously.

If recession festers into a depression, the Severn Barrage could be the UK’s reprise of America’s Grand Coulee Dam. This impressive structure holds back the “misty crystal glitter of the wild and windward spray” that is “King Columbia River”, in the words of proto-folkie Woody Guthrie. The dam, built in the 1930s, helped tackle that era’s environmental disaster – desertification. It also attacked the economic ills of the Great Depression through the Rooseveltian prescription of a vast work-creation scheme.

The Severn Barrage could fulfil the same function in our Keynesian present. It would employ 18,000 under-utilised construction workers for seven years. The structure would create a net 7,000 new permanent jobs, shrinking the distance between Wales and the South West via a highway running across its top.
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Ocean, Wave and Tidal Power
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