A hundred years ago, companies stopped producing their own power with steam engines and plugged into the newly built electric grid.
Otu narị afọ gara aga, ụlọ ọrụ kwụsịrị ịkwụsị ikike nke aka ha na injin ụgbọ mmiri na dynamos ma tinye ya na ntanetị eletrik ọhụrụ.