Free energy suppression (or new energy suppression) is a conspiracy theory that technologically viable, pollution-free, no-cost energy sources are being suppressed by government, corporations, or advocacy groups. Devices allegedly suppressed include perpetual motion machines, cold fusion generators, torus-based generators, reverse-engineered extraterrestrial technology and other generally unproven, low-cost energy sources.
The alleged suppression (or weakening) is claimed to have occurred since the mid-19th century and allegedly perpetrated by various government agencies, corporate powers, special interest groups, and fraudulent inventors. The special interest groups are usually claimed to be associated with the fossil fuel or nuclear industry, whose business model would be threatened.
Claims of suppression include:
Some examples of individuals who were allegedly suppressed, harassed or killed for their research are: Thomas Henry Moray, Stanley Meyer and Eugene Mallove.