Top 10 Things You Don’t Know About Offshore Wind-Energy
Here are three of them-
- 1.Offshore Wind Resources are Near Most Americans: More than 70 percent of the nation’s electricity consumption occurs in the 28 coastal states — where most Americans live. Offshore wind resources are conveniently located near these coastal populations. Wind turbines off coastlines use shorter transmission lines to connect to the power grid than many common sources of electricity
- Offshore Wind is Right on Time: Offshore winds are typically stronger during the day, allowing for a more stable and efficient production of energy when consumer demand is at its peak. Most land-based wind resources are stronger at night, when electricity demands are lower.
- Offshore Wind Farms Use Undersea Cables to Transmit Electricity to the Grid: Electricity produced by offshore wind turbines travels back to land through a series of cable systems that are buried in the sea floor. This electricity is channeled through coastal load centers that prioritize where the electricity should go and distributes it into the electrical grid to power our homes, schools and businesses. energy.gov/articles
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Offshore Wind Energy Technology
Commercial-scale offshore wind facilities are similar to onshore wind facilities. The wind turbine generators used in offshore environments include modifications to prevent corrosion, and their foundations must be designed to withstand the harsh environment of the ocean, including storm waves, hurricane-force winds, and even ice flows. Roughly 90% of the U.S. OCS wind energy resource occurs in waters that are too deep for current turbine technology. Engineers are working on new technologies, such as innovative foundations and floating wind turbines, that will transition wind power development into the harsher conditions associated with deeper waters. Learn more>>
The European Offshore Wind Industry – Key Trends And Statistics 2016
Offshore wind in Europe saw a net 1,558 MW of additional installed grid-connected capacity in 2016. This was 48% less than in 2015. A net addition of 338 new offshore wind turbines across six wind farms were grid-connected from 1 January to 31 December 2016. Learn more>> windeurope.org/about-wind/statistics
OFFSHORE WIND POWER AROUND THE WORLD
…Why is it expected to grow so much? Because offshore wind is steadier; more consistent; and not blocked by mountains, trees, buildings, etc. Additionally, offshore wind farms can actually be built closer to most population centers than onshore wind (most people live in coastal areas now).
Offshore wind power is not in place in most countries still, but it is installed and creating electricity in some places (especially the EU) and it is expected to grow considerably in the coming years.
In Europe: Europe is the clear leader when it comes to offshore wind power (currently). 308 offshore wind turbines were installed in Europe in 2010 and total newly installed capacity ended up being 883 MW, a 51% increase from the year before. New offshore wind power…Learn more>> cleantechnica.com
UK — 1,341 MW
Denmark — 854 MW
Netherlands — 249 MW
Belgium — 195 MW
Sweden — 164 MW
Germany — 92 MW
Ireland — 25 MW
Finland — 26 MW
Norway — 2.3 MW
In 2011, offshore wind power capacity is expected to grow by around 1,000 or 1,500 MW. Currently, there are 13 European wind farms in development that, in total, are projected to have a capacity of nearly 4,000 MW. So, in total, when these are completed, installed offshore wind capacity will hit be close to 7,000 MW.
In China: 103.5 MW of offshore wind power are also in operation in China, since it’s first large-scale offshore wind project (totaling 102 MW) was completed June 8, 2010. The second 100-MW portion of this project, Shanghai’s East Sea Bridge wind farm, is supposed to start construction this year. But this 200 MW or so is nothing compared to what China has planned….Read more>> http://cleantechnica.com/world-wind-power/3/
In Japan: …It is hard to know what Japan will be focusing on in the wake of the tremendous natural disasters it has just faced and the ongoing nuclear disaster there, but some have speculated it is going to focus a lot more on renewable energy. None of Japan’s offshore turbines were harmed by the tremendous earthquake and tsunami despite some being quite close to the quake epicenter….Read more>> http://cleantechnica.com/world-wind-power/3/
In The United States: Reports have found that offshore wind farms along the mid-Atlantic coast could power one-third of the US population. Of course, only with the help of an offshore electricity superhighway,… Read more>> http://cleantechnica.com/world-wind-power/3/
Offshore Wind Advanced Technology Demonstration Projects
With roughly 80% of the U.S. electricity demand originating from coastal states, offshore wind is a crucial renewable resource to be incorporated in the country’s clean energy mix. Since 2012, the U.S. Department of Energy has supported a portfolio of advanced wind energy technology demonstration projects that represent some of the nation’s most innovative offshore wind projects in state and federal waters. These demonstrations are among the first of their kind making their way through permitting, approval, and grid interconnection processes in the United States. The demonstration projects will help address key challenges associated with installing full-scale offshore wind turbines, connecting offshore turbines to the power grid, and navigating new permitting and approval processes. Learn more>> energy.gov/eere
OFFSHORE WIND ENERGY
Offshore Wind Energy Resources
Offshore wind turbines are being used by a number of countries to harness the energy of strong, consistent winds that are found over the oceans. In the United States, 53% of the nation’s population lives in coastal areas, where energy costs and demands are high and land-based renewable energy resources are often limited. Abundant offshore wind resources have the potential to supply immense quantities of renewable energy to major U.S. coastal cities, such as New York City and Boston. Enlarge map>>
Wind speeds off the Atlantic Coast and in the Gulf of Mexico are lower than wind speeds off the Pacific Coast. However, the presence of shallower waters in the Atlantic makes development more attractive and economical for now. Hawaii has the highest estimated potential, accounting for roughly 17% of the entire estimated U.S. offshore wind resource. For additional information on NREL’s assessment of offshore wind power resource, see the publication Assessment of Offshore Wind Energy Resources for the United States. Maps of renewable energy potential for multiple technologies, or state-by-state analyses, can be downloaded here. http://www.boem.gov/renewable-energy-program/renewable-energy-guide/offshore-wind-energy.aspx
Commercial Offshore Wind Energy Generation
Many countries, including the United States, have coastal areas with high wind resource potential. Worldwide there are 4.45 GW of offshore wind energy installed, with another 4.72 GW under construction and an additional 30.44 GW approved. Over 50 projects are operational in coastal waters of countries…Read more>>
Nysted Wind Facility, 8-12 miles offshore Denmark, the North Sea. Wind turbines are arranged to take advantage of the prevailing wind conditions at the project site, and turbine spacing is carefully designed to maximize cost efficiency and power production. (Credit:NREL)