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The world's first commercial wave farm, generating electricity from ocean waves is based in Portugal, at the Aguçadora Wave Park, and there is funding available for farms of various designs in Scotland, Oregon (US), Cornwall (UK) and Western Australia. At the moment there are various small pilot studies being carried on throughout the world to generate electricity from ocean waves. Depending on the size, the design and the money available the start up time could be anything from two years up to ten.
Kimberly in South Africa
I have heard New York City was the first city in the world to use electricity. The second city was San Jose, Costa Rica. Then Paris.
Hydropower is the cheapest way to generate electricity today. No other energy source, renewable or nonrenewable, can match it. Producing electricity from hydropower is cheap because, once a dam has been built and the equipment installed, the energy source-flowing water-is free. Although Hydropower does present a few environmental problems the inherent technical, economic and environmental benefits of hydroelectric power make it an important contributor to the future world energy mix,
It is not exactly correct to describe electricity as an invention. There are a great many inventions that use electricity, but electricity itself is part of the natural world (most obviously in the form of lightning). Therefore it was discovered, rather than invented. The discovery of electricity and the various uses that were invented for it have transformed our world in very profound ways. Almost all of modern technology depends, directly or indirectly, on electricity and its uses. Without it, we would still be living in the middle ages.