I have posted about Andrea Rossi’-s cold fusion reactor, which inputs nickel powder (with some catalysts) and hydrogen, and which outputs heat (factor 30) and copper. Since I have updated that post, I wanted to recommend you 2 interviews of him, and some physics articles.
The price of nickel is so low (20 euro per kg) that it should have to raise of orders of magnitude to make this tech uncompetitive. Nickel is very common on the Earth, and with a tiny percentage of the yearly extraction of nickel it would be possible to produce all the energy needed in the World.
The powder has reportedly been used for 2.5 months continuously with an output of 10 kW (according to Rossi). It corresponds to a total energy of 18 MWh, with a consumption of up to 100 grams of nickel and two grams of hydrogen. If the production had been done with oil, two tons of oil would have been required.
– Finally, here’-s an index of all papers and articles on cold fusion, cold fusion reactors, low-energy nuclear reactions, chemically-assisted nuclear reactions, etc.: http://www.lenr-canr.org/