Quote Originally Posted by SOLARWIND View Post
Ripple relays were quite common in the 80's, especially in Gauteng and Vaal Triangle.
Surely, they can be introduced again, which will allow ESKOM or whoever else to turn off all geysers whenever needed. At least will this be a way to keep the lights on during load shedding! The control need not come superimposed on the power lines, but rather over the Internet.
Not every one has an internet connection at home.
Besides there must be a way to insert the network and pass word by the home owner, who will most probably disable the device.