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The potential for global tidal energy is enormous, with the World Energy Council WEC estimating that up to 1,000GW of tidal energy could be installed by mid-century, equivalent to half of
the world's current coal capacity.
However, GlobalData said in a recent study that in addition to the associated environmental impacts, the upfront construction cost of tidal barrages remains a major constraint
.
In terms of its feasibility, GlobalData's technical team says La Rance's tidal power station in Brittany, France, is the oldest tidal facility
in the world.
Opened in November 1966, the project took five years to build and cost $100 million (equivalent to $790 million today), making it the first to use tidal energy as an energy source and continue to
power the region.
Built by EDF and straddling the Rance estuary, the plant generates electricity from 24 turbines per year with a capacity of up to 600 million kilowatt-hours, which is equivalent to the energy consumption
of the French city of Rennes.
Since its construction, the plant has generated around 27,600GWh, which equates to around £3.
3 billion at today's prices
.
Phil Hart, director of energy and power at Cranfield University, told GlobalData: "Rance is the first tidal power station of its kind, and I'm not sure how the overall lifespan economics performs, but seeing that most energy projects have a lifespan of 25 to 40 years, Rance is still strong after 50 years and shows no signs of
retirement.
" ”
However, tidal barrage power stations do have environmental costs, which make them one of
the less popular renewable energy sources.
Thomas Adcock, an associate professor in the Department of Engineering Sciences at the University of Oxford, said the Rance estuary had been hit by a "significant environmental impact" as a result of the station's presence, adding: "This would make it very difficult
to obtain such a permit.
" ”
GlobalData's technical team said: "Indeed, the plant caused the gradual silting
of the ecosystem around Rance.
Although the river has seen the return of sea bass and cuttlefish, the number of eels and cuttlefish in the area has decreased
.
The general consensus seems to be that the environmental impact of tidal power stations requires more research to make the technology a reasonable alternative
to conventional forms of energy.
”
The potential for global tidal energy is enormous, with the World Energy Council WEC estimating that up to 1,000GW of tidal energy could be installed by mid-century, equivalent to half of
the world's current coal capacity.
However, GlobalData said in a recent study that in addition to the associated environmental impacts, the upfront construction cost of tidal barrages remains a major constraint
.
In terms of its feasibility, GlobalData's technical team says La Rance's tidal power station in Brittany, France, is the oldest tidal facility
in the world.
Opened in November 1966, the project took five years to build and cost $100 million (equivalent to $790 million today), making it the first to use tidal energy as an energy source and continue to
power the region.
Built by EDF and straddling the Rance estuary, the plant generates electricity from 24 turbines per year with a capacity of up to 600 million kilowatt-hours, which is equivalent to the energy consumption
of the French city of Rennes.
Since its construction, the plant has generated around 27,600GWh, which equates to around £3.
3 billion at today's prices
.
Phil Hart, director of energy and power at Cranfield University, told GlobalData: "Rance is the first tidal power station of its kind, and I'm not sure how the overall lifespan economics performs, but seeing that most energy projects have a lifespan of 25 to 40 years, Rance is still strong after 50 years and shows no signs of
retirement.
" ”
However, tidal barrage power stations do have environmental costs, which make them one of
the less popular renewable energy sources.
Thomas Adcock, an associate professor in the Department of Engineering Sciences at the University of Oxford, said the Rance estuary had been hit by a "significant environmental impact" as a result of the station's presence, adding: "This would make it very difficult
to obtain such a permit.
" ”
GlobalData's technical team said: "Indeed, the plant caused the gradual silting
of the ecosystem around Rance.
Although the river has seen the return of sea bass and cuttlefish, the number of eels and cuttlefish in the area has decreased
.
The general consensus seems to be that the environmental impact of tidal power stations requires more research to make the technology a reasonable alternative
to conventional forms of energy.
”
