A physicist in Italy claims to have demonstrated a new type of power plant that provides safe, cheap and virtually unlimited nuclear power to the world, without fossil fuels or radiation concerns.

The only hitch: Scientists say the method — cold fusion — is patently impossible. They say it defies the laws of physics.

Andrea Rossi doesn’t seem to care. He told FoxNews.com that his new device takes in nickel and hydrogen and fuses them in a low-grade nuclear reaction that essentially spits out sheer power, validating the strange science.

“With low energy, it’s possible to give a heater a certain amount of energy and to get from the same heater a superior amount of energy,” Rossi explained. He claims he demonstrated the device, called an E-Cat, at the University of Bologna in Italy on Oct. 28.

Rossi’s claims have confounded the scientific community, many of whom have either dismissed the demonstration outright or have questioned whether the E-Cat really works. Several experts who spoke to FoxNews.com declined to comment or go on the record.

Jonathan Koomey, an energy consultant who has advised the EPA, said any extraordinary discovery requires extraordinary proof. He said the E-Cat must be verified by an independent study conducted by scientists who are allowed access to the machine’s inner-workings.