At the BBC, the " radio alert transmission system" (Rats) , will be activated — a cold war-era alarm designed to withstand an attack on the nation's infrastructure.
The operator of the national grid says disruptions in the transmission system in northern Chile cut power supplies from the northern Arica region to Los Lagos in the south.
That was true in the 1970s when engineers in LA were deciding how to expand their transmission system and deliver power from the Scattergood power plant to the Olympic substation near Santa Monica.