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UK Continues Energy Efforts into the Ocean

June 27, 2006   |   5 Comments

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"So much has been said about using wave power to generate electricity, and those words are now beginning to be turned into actions."

-- Bill Langley, npower renewables, Marine Development Engineer
5 Reader Comments
Comment
1 of 5
June 27, 2006
The problem of grid interconnection is a major one not only in the UK but in all parts of the world. Volume 1 of the Energy Encyclopedia describes Buckministerfuller's proposed "supergrid" interconnecting renewable energy systems for the entire world (while the sun shines on one side, it is night on the other). I believe that this is the approach that needs to be taken.

Just as communications are worldwide, we need similarly a worldwide power system which would then be able to take advantage of blocks of power being generated in different geographical locations at different times. It is not enough to load the grid for one segment of time and then depend upon burning fossil fuels for other hours. Electricity is presently sent in blocks of power, according to demand, and renewables must adapt to this system or present another way of dispersing power to homes and factories.

adrianakau@aol.com
Comment
2 of 5
June 28, 2006
I hope a lot of different countries don't waste money by , essentially, replicating the research that the Brits are doing here.
Comment
3 of 5
June 28, 2006
I'd like to see the physics that would alow a worldwide renewable energy grid. My limited understanding of electical transmission is that
significant losses occur during transport. I realize that higher voltages mitigate the effect but I don't know how much. The statement that the sun is always shining somewhere iis quite misleading - even during daylight hours, large weather systems can wreak havoc with solar power level outputs, even if solar were to become cost competitive commercially. Wind power may occur 24/7 but it varies a lot.
The best solution would be to transform
a variable output renewable output into a
form of stored energy, which can then be released at a constant rate. Regardless, there are added costs associated with the variability of most renewable power sources. The question will boil down to which method of smoothing out the power output is cheapest and most reliable, etc.
Comment
4 of 5
June 29, 2006
Kerry. At the present time, I don't think physisc would presently allow such a grid because of the power losses. I think the grid would be limited in distance but could be comprised of multiple renewable sources now necessarily dependent upon sunlight alone. The combination of PV, wind, wave power, ocean current and other sources in a given area could be linked together to provide a more regular power source to the grid system.

I do agree with you that transformation into a form of renewables partly into stored energy would be of great benefit. I think that if the energy could be used to efficiently break water molecules as Professor Kanarev proposes (using modulated spiked voltages rather than constant dc), then we should have a decent storage method.

adrianakau@aol.com
Comment
5 of 5
July 2, 2006
The question that arises is how does one efficiently weave together the power coming from renewable and conventional sources?

Kerry says that electric transmission abilities limit the distance power can be sent. I must agree. My solution is to keep the distance small but to mix the sources as much as possible so that multiple wind, wave, current and hydro sources can be combined.

I include hydro because the Idaho National Laboratory used a run-of-river model having a a penstock to direct water through a powerhouse and then back into streams without any holding of water. Hydro without dams (energy taken directly from moving water) would greatly boost recoverable hydro.

adrianakau@aol.com
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