A new alloy has been discovered with unique properties to convert heat directly into electricity. The alloy is made from the multiferroic composite of nickel, cobalt and highly magnetic.
University of Utah Physicists has also developed a small device that convert heat into sound energy and then into electricity. They have also promised to make a device which can convert heat directly to electricity.
Solar cells are also used to convert heat energy to electricity. They absorbs the heat energy and converts it to electrical energy.
Wind mills are also used to convert heat energy to electricity. You can find them in Rajasthan as they need a large area to setup and a continuous speedy wind.
These were some of the methods used to convert heat energy to electricity.
"We must save electricity".
I find that the harder I work, the more luck I seem to have.