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Archive for the category “tidal”

Green Light Swansea Bay Tidal Power Station?

A UK government commission under former energy cabinet minister Charles Hendry has advised to go ahead with a 320 MW tidal energy project in Swansea Bay, Wales.
The British industry may have missed the boat with wind energy manufacturing, here is a chance to lay a claim on becoming a leader in tidal power.

#BritanniaRulesTheWaves

Three largest operational tidal power plants:

  1. Sihwa Lake Tidal Power Station, South Korea – 254MW
  2. La Rance Tidal Power Plant, France – 240MW
  3. Annapolis Royal Generating Station, Canada – 20MW

[wattisduurzaam.nl] – Groen licht voor Britse getijdencentrale van ±500 megawatt
[deepresource] – Swansea Bay Tidal Lagoon
[wikipedia.org] – Charles Hendry
[telegraph.co.uk] – Tidal lagoon developer to sign grid deal for £8bn Cardiff project
[bbc.com] – Ecotricity chief says Swansea tidal lagoon ‘too costly’
[walesonline.co.uk] – Everyone in Swansea is being urged to ‘Love the Tidal Lagoon’ to try to help make it happen
[power-technology.com] – Tidal giants – the world’s five biggest tidal power plants

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6 GW Tidal Power Dam Proposed off the Dutch Coast

dam_caisson[source]
Cobouw, a more than a century old daily newspaper for the Dutch building industry, proposes a dam perpendicular to the coast of 40 km length that could generate 6 GW of electricity, using 200 turbines, exploiting dynamic tidal power and would cover 1/3 of total Dutch electricity needs. Cost: 15 billion euro, payback time: 15 years. Shallowest depth Northsea: 19 m, 100 km from IJmuiden.

[cobouw.nl]noordzee-diepte[source]

Swansea Bay Tidal Lagoon

Planned in Wales: 250 MW tidal power station, based on a dam of 10.5 km, surrounding 11 km2 lagoon. The lagoon will generate on both ebb and flow tides using bi-directional turbines, allowing it to produce electricity for 16 hours each day. The lagoon could begin supplying electricity to the National Grid in 2017 and has an expected lifespan of 120 years. Investment volume: £650m (EUR 772m or $1006m). Other locations under consideration: Cardiff, Newport and Bridgewater Bay. The company planning to build tidal lagoon issues a £10m share offer to finance the early planning and research stages.

[walesonline.co.uk]

TidalLagoonSwanseaBay-1[source]

Tidal-Lagoon-Swansea-Bay-could-Produce-First-Power-in-2017[source]

Tidal Energy Could Cover 20% Electricity Needs UK

According to a study by the university of Liverpool 15% could be generated using estuary barrages and turbines and 5% using tidal currents in the open sea, together 20%. This form of energy would be more reliable than wind. Disadvantage are high operational cost as the agressive salt water has negative impact on the turbines, increasing maintenance cost. The largest potential for the UK (and the world) would have a Severn Barrage (8.6 GW). Required would be a 16 km dam in the Severn on the border of England and South-Wales, bringing the total cost at 34 billion GBP. The study pleads for starting smaller projects first and gain experience before larger projects could be tackled.

[bbc.co.uk] – UK tidal power has huge potential, say scientists
[royalsocietypublishing.org] – Appraising the extractable tidal energy resource of the UK’s western coastal waters
[spiegel.de] – Gezeitenkraftwerke könnten 20 Prozent des Stroms liefern
[guardian.co.uk] – Abandoned Severn tidal power project to be reconsidered
[google.maps] – Rance Tidal Power Station
[wikipedia] – Rance Tidal Power Station

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1 MW Scottish Tidal Power Project In Operation


An underwater turbine that is set to be used in Scotland’s first and only consented tidal power project has successfully completed an initial testing period in Orkney, and is providing electricity for homes and businesses on the island of Eday, one of Orkney’s northern isles. A similar design has been operating in Norwegian waters for six years.

[scottishpowerrenewables.com]
[itv.com]

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