New Wave Power Research Rising Off Oregon Coast 158
necro81 writes "A prototype buoy has been launched off the Oregon coast to try generating electrical power from the ever-present waves. The OSU device works like a giant shake-up flashlight. It is one of several competing designs to take advantage of a potential clean energy goldmine. It will be years before substantial power is contributed to the grid, but several companies have received permits to develop test platforms. The New York Times has an article that surveys the current outlook for wave energy, which it compares to wind energy's prospects back in the 1980s. Concerns about impacts to wildlife and fishing remain to be answered."
Anchoring is the issue (Score:2, Informative)
Re:Laws of Physics (Score:5, Informative)
Re:Sounds good (Score:5, Informative)
Wave and Tidal... (Score:5, Informative)
But what always seemed more dramatic to me, however, are the tides. Especially living in an area with the highest tides in the world, seeing phenomenal amounts of water come in and out with a 6 foot difference, twice a day, always struck me as having a lot more potential (ha ha) than other sources of renewable energy. Effectively harnessing the gravitation pull of our moon through the tides, always seemed to me to be a solution that was too good to be true. There are days when the sea is calm and the wing generators are slower due to lack of wind; coal and oil prices vary wildly. But nothing stops the tides, day or night; the energy available and its cost is 100% predictable, which is a rarity among energy sources.
In Nova Scotia, we have tidal power plant [nspower.ca] which generates power from the tides. However, it seems to be in a constant state of research, politics, grants, and such, and is fairly small. (Even twenty years ago, it was in this state; instead of referring to it by its name, the "Fundy Tidal Project," people used to refer to it as the "Tidy Fundal Project.") The amount of energy that could be captured from even a small part of the Bay of Fundy [wikipedia.org] is staggering. Yes, it would be quite an engineering feat, but not really anything beyond other megaprojects. It's sad we haven't progressed further in harnessing this.
Re:Wave and Tidal... (Score:4, Informative)
1. They Bay of Fundy is kind of unusual. There is a lack of sites that are really that good.
2. Enviromental impact. Tidal areas tend to be very sensitive.
3. Cost. Except at few places tidal energy isn't very dense. It would require constructing huge systems.
Scotlands cool wave tech (Score:2, Informative)
There's a cool sub-sea wave farm which use the pressure changes to drive a generator.
http://www.alternative-energy-news.info/wave-power-scotland/ [alternativ...-news.info]
A huge 'snank' made of several sections, there are hydraulic rams between each section, which drive a generator.
http://news.bbc.co.uk/1/hi/scotland/4805076.stm [bbc.co.uk]
The Isle wave project which uses wave power at the shoreline. When the wave hits it fills a tank, pushing out air to drive a turbine. The first one worked really well in the 70's but just after it was built there was a bad storm which trashed it!
http://news.bbc.co.uk/1/hi/sci/tech/1032148.stm [bbc.co.uk]
Comment removed (Score:5, Informative)
some wave power devices already "semi" commercial (Score:2, Informative)
Re:Wave "as good as good as wind" is useless (Score:3, Informative)
Not everywhere has the wind resources we do, but in many places wind power doesn't ruin any land and provides a decent amount of power at not much higher cost than fossil fuels.
There was a google tech talk about this (Score:2, Informative)
They address optimum places to locate wave farms (sea depth, wind constancy) and even did an environmental impact study. If all the wave energy that is feasible to harvest is harvested, it could completely offset the CO2 emissions from US electricity production.
Re:Sounds good (Score:2, Informative)
http://www.washingtonpost.com/wp-dyn/content/article/2006/11/02/AR2006110200913.html/ [washingtonpost.com] I believe that this trend was again confirmed in 2007.