Earth 4 Energy

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This sounds AMAZING, after reading it do you think this is a real possibility and how many jobs world wide could it create? Since the U.S. Government funded the initial research wouldn’t it strengthen the country economically and as well as make the U.S. the world’s leading energy provider one way or another? What do you all think?
Here’s a quote
The scientists behind the technology, which has been developed in research funded by the US government, say that generating power in this way would potentially cost only around 3.5p per kilowatt hour, compared to about 4.5p for wind energy and between 10p and 31p for solar power. They say the technology would require up to 50 times less ocean acreage than wave power generation.http://www.telegraph.co.uk/earth/energy/…
Also at 3.5 per KWH it’s cheaper according this table than any other major energy sourcehttp://peswiki.com/index.php/Directory:C…

Looking to build a cabin in the middle of nowhere in the ozarks. Wish to do this with my family and friends and ultimately power it with alternative energy.

Can someone answer this for me? Im studying for a test and im not sure how to do it. My book sucks and isnt very good at explainging things.
A 69.0 kg base runner begins his slide into second base when he is moving at a speed of 4.1 m/s. The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base.
(a) How much mechanical energy is lost due to friction acting on the runner?
J
(b) How far does he slide?