BS 

I had my eyebrow raised the whole way through this article. The references (practically everything before the 20th century) are suspicious. All the other comments on this discussion page reassure me that my judgment isn't off. It's somewhat convincing that there are large scale electrical effects due to geological forces, but that seems orders of magnitude away from being able to bury some disks anywhere in the world and get free useful current. I'm calling chemical effects on this one. This article needs some attention