Severn Lake Official Website - Severn Barrage
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Severn Lake Tidal Power

 

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Welcome to the official Website for The Severn Lake™ project - the development of an Energy Causeway which creates a 145,000 hectare lake in the Bristol Channel

This site features the very latest news on this exciting project, plus background details about the plans...

The concrete Causeway will be 12.2 km long from Lavernock Point (Fort Road) in Wales to Brean Down (National Trust) in Somerset, England. Without exception, all of the schemes proposed for the Severn have been a concrete wall carrying turbines with a roadway above between Wales and the West of England. The Severn Lake Causeway does not propose to run ashore at either side, will be fully autonomous in every utility and will not have a roadway between Wales and England. The proposal goes further in providing a whole ribbon development within the Lake.

The construction of the turbine galleries holding 192 turbines that will capture the tide on ebb and flow, computer controlled for tidal and lake height control for optimum energy production. There will be two test galleries for service and testing of old, and new generating turbines. The minimum life design will be one hundred years. These will supply Energy A.

The Causeway will have at its extremities fish passes, with viewing points, and underground marine life viewing cafes.

The Causeway will contain within its width and along the current shipping channel lanes, two free-flow shipping channels able to sustain 250,000 d.w.t. shipping. These locks will allow the unhindered passage of shipping at all available times. To provide a clear channel for commercial shipping and to control leisure craft, islands would be moored in place to be utilised as to their market needs and value.

In the causeway design and construction, provision can be made for the addition of underground cellars that would contain organic waste. Made of reinforced concrete, these cellars will hold approximately 90,000 tons (each) of robotically controlled organic waste. These will provide methane gas to be burned to provide electricity supply B. On exhaustion, the decomposed waste pelleted, with the cellars refilled. It is possible that this facility can provide the whole of the organic waste fill site requirement for South Wales and the South West, in a continuing process.

Wave Farms can be strategically placed to allow shipping, but to console the channel winds / waves and protect the Causeway. The Causeway grid provides a convenient and cost effective conduit for such a scheme managed by the Severn Lake Company as part of the turnover.

Four marinas, two along each shoreline, would provide safe berthing for the many boats, yachts and water sports using the Lake. These would add hugely to the tourism aspect of the development.

The Severn Lake Company would provide a lifeboat station, as shown on the plan.

Private Islands to be used as luxury living accommodation, sponsored islands which can provide habitat for wildlife and birds, fishing islands, diving islands with temporary accommodation. The Company would look to promote tourism and provide free electricity and / or gas to all Lake transport suitably equipped. (This would include Cardiff Bay, Newport, Gloucester, Bristol, Portishead and Weston-Super-Mare). The Company would actively promote the brokerage of renewable fuel marine transport systems on the Lake.

The Causeway would contain Ports on both sections to initially deal with construction and latterly to accept waste and the utility and service of the Causeway itself.

The Causeway would have its own water supply through its own desalination plant.

The extremities of the Causeway, with allowances for fish passes would be designed landscaped in consultation with the local authorities in Wales and the National Trust in Somerset.

The building of the Causeway will provide a huge new environment more suited to life on a live lake. The French at Le Rance, and with hydro schemes we have looked at in Avignon, and others, have led the way and will provide copy-cat systems of fish pass, level control and upper erosion protection. The Severn Lake Company intend to manage the Lake to encourage sustainable dish stocks and varied aquatic life and will look to work with the R.S.P.B. to provide some of the compensatory habitat described as a condition by the Sustainable Development Commission. The Causeway, when completed, along with its ancillary development, will take in some 1900 hectares of water, which will become land. A considerable portion of this land will be given up to provide similar feeding conditions. (including shoreline) to compensate for the minor losses incurred by the retention in the Lake of higher levels of water.

Important Note

In the planning process, the Severn Lake Company will argue that the provision of renewable power is in the national interest.

The actual building of the Causeway described has no particular engineering hurdles. It is likely that in the design, certain sections can be installed and working before others (this part is, at this stage, strictly Company Commercial and in Confidence).

It is estimated that between four and six yards in the UK and Netherlands can build the cellars to a given programme. Employment at its height could be some 30,000 men, over some five to seven years.

It is feasible to produce electricity in stages of build and also possible to take waste to cellar 1. All of which assists in cash flow!

The most difficult part of the project is the politics and the planning and consent procedures. With the introduction of this 'whole' development and given the increases in the returns for energy, and waste disposal, the viability of the project will be shown to be attractive to medium and long term investors.

Gareth Woodham
Founder of the Severn Lake

Dated: 1st December 2008, and promoted as a unique scheme with its rights reserved solely to The Severn Lake Co. Ltd

Click here to show your support for the Severn Lake tidal power scheme and submit your feedback to the government [External link to official consultation website]

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© Developed by Mark Newman 2008  *
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