In the 1970s a colleague occasionally worked to earn money for long stays at a New Age community. One day he showed me round the campus they were building. The focal point was a large assembly hall. He pointed to the apex and explained that once completed there would be a crystal suspended by gold wires. When everyone was in the hall - their mind thoughts would generate enough electricity to make them independent of the national electricity grid.
They also believed that you could change the genetics of food crops by exercising the same mind power.