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First Offshore Wind Farm In US Waters Delivers Power To Rhode Island (arstechnica.com)
An anonymous reader quotes a report from Ars Technica: On Monday, energy company Deepwater Wind announced that its wind farm three miles off the coast of Block Island, Rhode Island, has the all-clear to sell electricity to the regional power grid. The Block Island Wind Farm is the first offshore wind energy plant in the U.S., and it's expected to produce 30 MW of electricity at full capacity. Deepwater Wind is slowly ramping up energy output and still must provide additional paperwork to the Rhode Island Coastal Resources Management Council, but the executive director of that organization, Grover Fugate, told the Providence Journal, "we don't anticipate any major issues" to getting the wind farm fully online. The one hitch in the Deepwater's plan is that one of the five turbines was recently damaged when a drill bit was left in a critical part of turbine. According to the Providence Journal, "the bit had caused damage to an unspecified number of the 128 magnet modules that line the circular generator and are critical to producing energy." Although the magnet modules can apparently be replaced easily, Deepwater needs to have the components shipped from France, where General Electric, the manufacturer of the wind turbines, makes them. For now, four turbines capable of churning out 6 MW of power each are operational. The Providence Journal notes that National Grid will pay Deepwater Wind 24.4 cents per kilowatt hour of power, with the price escalating over time to 47.9 cents per kilowatt hour. Because the residents of Block Island have some of the most expensive electricity rates in the nation, they will actually see energy savings, despite the price. Mainland Rhode Islanders, on the other hand, will pay an extra $1.07 per month on average.
Does 5 turbines really make it a farm?
Normally I am the first to ridicule USA, but in this case, I won't. It is their very first installation, it is obvious that it will be expensive - they lack infrastructure to mass produce offshore windparks. The next windpark will be far cheaper.
Americans, you have my congratulations for the first step! Took you long enough but you'll get there eventually.
"It's such a fine line between stupid and clever" -- David St. Hubbins, Spinal Tap
Hopefully not. They'll make a damned good profit with all the hot air that'll be blowing.
-=This sig has nothing to do with my comment. Move along now=-
Here you go:
- https://en.wikipedia.org/wiki/...
- https://www.bloomberg.com/news...
- http://www.bbc.com/news/busine...
- http://www.huffingtonpost.com/...
And don't get me started on the subsidies nuclear has received since its inception because... strategic.
The U.S.has the second largest installed wind capacity - nearly all of it onshore. Offshore wind farms in the U.S. are complicated by geography. Winds in the Northern hemisphere blow predominantly from the west, so the strongest offshore winds are to the west of land masses (which slow the wind down). Europe is blessed with an extensive continental shelf to its west. So it's relatively easy to build an offshore wind farm there several tens or even a hundred kilometers from shore, before the winds are slowed down by land.
About half the U.S. West coast (California) has practically no continental shelf. You go a kilometer offshore and the water is already deeper than the European continental shelf. Go a few more kilometers offshore and the water is 1-3 km deep. Northern California to Washington does have a slight continental shelf, but (1) practically nobody lives along the coast north of San Francisco, and (2) the bulk of U.S. hydroelectric power is there giving the region the cheapest electricity in the country. So in the geographic region of the U.S.which is most analogous to Europe in terms of strongest winds, offshore wind farms are unfeasible due to underwater topography, (lack of) population, or economics.
The U.S. East coast has a large continental shelf, but due to the direction of the prevailing winds, you have to go far offshore to find winds stronger than what you'd find onshore. The focus of most offshore wind in the U.S. has been just south of Connecticut, Rhode Island, and Massachusetts, where the shoreline turns almost directly east-west, allowing wind speeds to pick up relatively close to shore. It's still nowhere near as good as the offshore winds west of Europe though. The wind farms off Scotland enjoy some of the highest capacity factors on earth - higher than 60%. Typical offshore wind capacity factor in the U.S. is closer to 30%-35%.
But what do I know. I'm just an ignorant American.
The west coast is pretty much useless with an extremely short continental shelf.
About 58% of US wind resources off shore are in waters too deep to mount to the sea floor. Fortunately a lot of work is going into developing floating wind turbines so this should become a non-issue in due course.
According to the DOE the US has over 2,000 gigawatts of available wind power offshore which is more than enough in theory to supply the entire current electricity consumption of the US. Frankly we are being foolish to not take full advantage of offshore wind.
The east coast does not have reliable wind patterns for efficient wind generation.
That's evidently not true at least as a general proposition since they are installing wind farms on the east coast including the one discussed here near Rhode Island. I'm sure it's focally true for some areas but clearly not for the entire eastern seaboard.
The problem of course, is that while the US has a good bit of coastline, we have a lot of real estate that is a long way from the ocean.
Of course we do. We also have the ability to transmit electricity there. And don't kid yourself. A huge percentage of the population of the US lives within two hundred miles of the ocean. This includes the entire populations of New York City, Boston, Washington DC, Baltimore, Philadelphia, Miami, Jacksonville, Houston, New Orleans, Los Angeles, San Francisco, Portland, Seattle and plenty more. Counties directly on the shoreline account for 40% of US population. All of these cities could easily be supplied by off shore wind power. We're idiots for not taking advantage of this power source.
The east coast of the US is prone to some serious weather excursions in the form of hurricanes. A lot of them. Even in Rhode Island. So an offshore wind facility has to be designed with that in mind.
They are. My understanding is that they stop the turbines from spinning above a certain wind load (somewhere around 125kph currently). They have a hurricane mode where the blades are pitched to neutral so it doesn't spin and then locked down facing the wind. Of course if the wind gets high enough damage is likely to result from a hurricane on land or off shore. Cuba had some wind farms survive hurricane Sandy which had winds of 110mph.