The International
Renewable Energy Agency (IRENA) has said that offshore wind technologies are
rapidly becoming commercialized, which result in keeping electricity cheaper,
reports ITREALMS.
IRENA in its third Quarterly
publication, made available to ITREALMS showed that in the year 2000, the
world’s installed offshore wind capacity amounted to 67 megawatts (MW) – only enough
to supply 33 500 average within European Union (EU) households with
electricity.
By last year, IRENA said, this had reached almost 20
gigawatts (GW), which could, cumulatively, power a large United States (US)
city like Los Angeles.
This growth has been driven by continual cost reduction,
enabled by technology improvements and other developments in the offshore wind
industry.
Since the first offshore wind farm operated in Denmark, in
1991, turbine blades have been getting bigger and foundations more diverse. Yet
turbines anchored to the sea floor are still constrained by water depth, keeping
areas with the greatest wind potential – some close to enormous markets, like Japanese
or US cities – out of reach. This is set to change quickly, however, with the
advent of floating foundations.
Until today, offshore wind power has mainly been developed
in Europe. Further expansion depends on more research, continued technology
improvements and achieving reliability in different environmental conditions.
Nenye Dom/GEE
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