Ways to generate electricity

2008-06-05

in Geek stuff, Science

Trying to think systematically about electricity, I am making a list of all the basic ways it can be produced. Here is what I have so far:

Most of our power plants are of the first kind, using kinetic energy from falling water, wind, or hot water boiled using nuclear or fossil fuels. There is a smattering of PV capacity around, and wave power stations might eventually use piezoelectricity. Chemically generated electric current has niche applications and thermocouples are used along with radioactive materials to power some satellites.

Are there any basic forms I am missing here? Are any of these actually manifestations of the same phenomenon?

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{ 6 comments… read them below or add one }

. November 30, 2009 at 10:15 am

The World’s First Osmotic Power Plant

“Her Royal Highness Crown Princess Mette-Marit of Norway officially opened the world’s first osmotic power plant prototype on November 24. The prototype has a limited production capacity and will be used primarily for testing and data validation, leading to the construction of a commercial power plant in a few years time. Statkraft claims that the technology has the global potential to generate clean, renewable energy equivalent to China’s total electricity consumption in 2002 or half of the EU’s total power production” What’s osmotic power? Wikipedia to the rescue!

. September 23, 2010 at 3:01 pm

The Future of Smart Energy

These are just a few of the groundbreaking energy innovations that are now developing and might change our future. For more resources on what’s on the horizon for energy, check out the following:

FROM HBR:

On the Horizon: Six Sources of Limitless Energy? by Gardiner Morse

Tapping into Ocean Energy by Matt Simmons

The Greening of Petrobras by José Sergio Gabrielli de Azevedo

Andrew Winston’s regular blog on sustainable business practices

FROM OTHERS:

McKinsey Quarterly on Energy

New York Times’ Green Business Blog

Financial Times’ Energy Source Blog

Popular Science’s Energy Feed

PhysOrg Energy News

Wall Street Journal’s Energy Headlines

. March 2, 2012 at 7:04 pm

Power from the sea
Second time around…
Ocean heat may be used to generate electricity

EVEN by the standards of American bureaucracy, an organisation that operated for 13 years without achieving anything is impressive. Yet that was the fate of the Ocean Thermal Energy Conversion (OTEC) permit office, which opened its doors in 1981 and closed them in 1994, having issued not a single OTEC permit.

The office was part of NOAA, America’s National Oceanic and Atmospheric Administration—a marine counterpart of the country’s space agency, NASA. And the idea of OTEC was to exploit the difference in temperature between the top of the ocean and the bottom, in order to drive turbines and generate electricity. The incentive was the oil-price spike of the 1970s. But once that incentive went away, so did interest in alternative sources of power and, eventually, so too did the office.

Alternative power sources are back in fashion, though, and OTEC is one of them. A range of companies, from giants such as Lockheed Martin to minnows like the Ocean Thermal Energy Corporation of Lancaster, Pennsylvania, are working on the technology, and this time it might actually come to pass. Most of the bits and pieces required can be borrowed from other areas of engineering, such as deepwater oil drilling. And the idea of a power station whose fuel is free is attractive, as long as the capital cost is not too high.

Milan August 8, 2012 at 2:51 pm

I am developing a pretty good collection of photos from different kinds of power stations:

Hydroelectric: I definitely have photos of Cleveland Dam in Vancouver and the Glen Canyon Dam, but cannot find them online at the moment
Wind: 1, 2, 3, 4
Nuclear: Darlington Nuclear Generating Station
Gas: Portlands Energy Centre
Coal: Inoperative Hearn Generating Station, plant in Malta

. September 7, 2016 at 12:50 am

More Ontario wind power:

MPI_0500
MPI_0502
MPI_0505
MPI_0508

. June 18, 2017 at 7:42 pm

High-altitude drones have also been proposed as a way to generate electricity, because strong winds blow more reliably well above the ground. Known as wind drones or energy kites, such aircraft are tethered so that cables can deliver the electricity back to the ground. Makani, a startup acquired by Google in 2013, reckons a single energy kite can generate 50% more electricity than a single wind turbine while using only 10% of the materials. Each Makani energy kite, which resembles a wing with eight propellers, weighs 11 tonnes, compared with about 100 tonnes for a comparable 600kW turbine. This approach is being pursued by other firms too, including Ampyx Power and Kite Power Systems, both backed by E.ON, a German utility. Tethered drones on a smaller scale are also being considered for indoor use in warehouses, where they might help with stocktaking. Flying indoors neatly sidesteps many regulatory problems, and supplying power via tethers does away with the need for recharging. But GPS cannot be used for positioning.

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