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Breakthroughs on the Tide?

These are the Best of Time and Worst of Times for EcoGeeks. We know that Global Warming is natural cialis pills already wreaking havoc, that snipping our hair is likely to show mercury, that plastics just don't go away. But, boy, it is truly the best of times. One can't pause for a moment without seeming to miss yet another breakthrough, yet another exciting development. And always, more of these are moving from the lab to deployment.

While still advancing, wind power is almost becoming blase. Exciting that it's displacing coal, but once you've seen a 1000 windmills, after all. Until we start producing gigawatts of power, how else will they get exciting?

Well, they could go underwater.

One way to look at tidal, wave, and river water power generation is to look at it about a decade behind wind power. Just now moving from the lab into power generation with breakout potential just over the horizon. This month should see installation of one of levitra cheap those exciting tidal power generation systems, a 1.2 mw system to be be installed in Strangford Lough by SeaGen. After years of testing smaller turbines, this is cialis to buy a production level system that is going in the water. This is the viagra from india last phase of testing and development before large scale installations can occur.

There is a huge potential for inexpensive and predictable power by capturing tidal energy. Get ready for some massive growth in the industry.


San Francisco Tidal Power in the Works

It's pretty convenient that many of the world's major cities happen to be fairly near to renewable energy sources. Two of America's largest cities, New York and San Francisco, happen to have extremely strong tidal currents. And while we've previously reported that New York is working on some tidal infrastructure, today we're excited to announce that San Francisco is looking to up the ante.

The City of San Francisco and PG&E (their electric utility) are partnering to study where and how to build the most effective tidal power plant in the bay. The force of the water is, of course, tremendous, and it's been estimated that tidal turbines in the bay could produce as much as 400 megawatts of viagra online pharmacy cheap power.

Of course, getting at real numbers is precisely why this $1.5 million study is being done. Depending on the results of the study and viagra more drug uses the level of cooperation between utilities, state governments and the federal government, the bay could be producing power in as little as five years. But we'll have to wait and see, this is only the first step on an unfortunately long road.

Via SFGate and Green Wombat

See also:
-In Stream Tidal-
-Giant Shark Fin?-

Waves Could Power the World 2X Over

Ever sit by the only for you high quality cialis ocean, and watch a buoy or a seagull bob up and down without end? The energy it takes to move all that water up and down is massive. Prevailing winds, temperature differentials, strong weather and even the rotation of the Earth all contribute to the never-ending crash of waves against the shore, and viewed from a certain perspective, that's a lot of energy going to waste:

The World Energy Council has estimated that approximately 2 terawatts (2 million megawatts), about double current world electricity production, could be produced from the oceans via wave power. It is estimated that 1 million gigawatt hours of wave energy hits Australian shores annually and that 25% of the UK’s current power usage could be supplied by harvesting its wave resource.

The image above shows average yearly wave-power energy in various parts of best price pharmcy tramadol the world in kilowatts per METER!

The same ocean currents that fueled the economic growth of the 18th and 19th centuries may now help power the countries that prospered as a result - with the best sites in the world lying off the shores of developed countries, look for this alternative energy to (I can't help myself) make some waves in the coming years. Scotland, Portugal, Australia and Hawaii already have installations underway or in place, and feasibility studies are being undertaken by Spain, Norway, USA and New Zealand.



First U.S. Tidal Power Installation

Tidal power systems have been under investigation for many years. The earliest method to generate power was with 'barrage' systems, which required the construction of dams across inlets and bays. Gates in the dams allowed the basin to fill during high tide, then the gates would be closed, and the basin would be allowed to drain out through turbines to generate power. However, the environmental impacts of these systems, along with the cost and the relative inefficiency, have kept them from much further development. There are some 'barrage' installations still in operation in Canada and in France, but no new projects are planned.

Instead, tidal power is being pursued as basically the same way wind power has been developed, turbines. In-line tidal power is intriguing because it is much more regular and predictable than wind, which can be intermittent and is generic cialis from india much more dependent on local weather. Water also has a much higher energy density than air does, which makes tidal systems appealing because a water turbine can be smaller than an air turbine.

A tidal power system comprised of six 35-kilowatt turbines has been installed in the East River near Roosevelt Island, New York. This study system is meant to determine the best configuration for the equipment, and help develop easily mass-producible versions of the turbines. A final configuration of 100 turbines is anticipated at this location.

Preliminary site approvals for in-stream turbine farms have already been given for 25 sites along the Atlantic and Pacific coasts of the US, and a further 31 sites are under consideration. Other companies are developing other forms of cialis online without prescription tidal turbines, some with as much as 1 megawatt capacity.

Previously on EcoGeek

via: MIT Technology Review

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