The women get up in the middle of the night to walk 2km to the nearest pumping station, where someone has removed a couple of brick from the base to allow a steady flow of water to pour out.

Meanwhile, smoke continues to pour from the power station chimneys and lorries shuttle backwards and forwards, taking away the fly ash to be mixed into cement at the neighbouring Ambuja factory.

Thermal calculation made is mainly to assess whether the inlet oil temperature at each station after non-heating operation is higher than crude oil's pour point;