Experts blamed a 'total breakdown in discipline' in which state governments in the north raided a regional grid rather than ration power, causing a domino effect.

Politicians blamed the crisis on the collapse of three regional grids.

The channels differ between the three regional grids, with a focus on carrying channels in the region's main language.

It began operating in 1933 as a series of regional grids with auxiliary interconnections for emergency use.

Following the unauthorised but successful short term paralleling of all regional grids by the night-time engineers in 1937, by 1938 the grid was operating as a national system.