The post for which mods banned me for violating terms of service, in its entirety:

Do you have some examples, or are we just supposed to guess what you’re talking about?

The only way to save money on electricity (essentially) is to use less of it. If whatever devices you’re talking about make it so you use less electricity, they could save you money. If not, then they won’t.

In this thread: Are these Tesla inspired gadgets any good?