Existing Barrages with Roads and Electricity Generation
La Rance Tidal Power Station, France
- Opened in 1966
- 0.75km in length
- Generates 523,000MWh per annum (as of 2010)
The Sihwa Embankment, South Korea
– enclosing a man-made coastal lake
- Opened in 2011
- 12.7km in length
- Generates 553,000MWh per annum (as of 2016)
Strategic Outline Business Case
Morecambe Bay and Duddon Estuary Barrages:
Travel Routes:
- Heysham – Rampside: 17km
- Askam-in-Furness – Haverigg: 6km
- New/updated routes from the M6 to Heysham, Rampside to Askham-in-Furness and Haverigg to the A595
Energy Production:
- *Between 7 million and 8 million MWh per annum
- *2 million homes supplied
- *2% of UK requirement or 7% of NW requirement
| Construction Cost Estimates (excluding finance) | Estimated Costs | Contingency | Per Mott MacDonald |
|---|---|---|---|
| Total | £8,410.00 | 21% | £10,193.00 |
| £m | % | £m | |
| Green electricity generation | £7,270.00 | 20% | £8,724.00 |
| Causeway | £1,140.00 | 29% | £1,469.00 |
| Development cost estimates (excluding finance) | Timescale | Current Estimates | |
|---|---|---|---|
| Corporate costs | 12 | £0.57 | |
| Months | £m | ||
| Development phase | 66 | £99.50 | |