Run on solar (sun usually shines when it's hot) and use geothermic energy. The ground below your house is significantly cooler than the surrounding air.
I'd still favour the fan, I've lived in India for longer periods with consistently around 32-36 C and a fan is perfectly enough after a little while of adapting.
I'd still favour the fan, I've lived in India for longer periods with consistently around 32-36 C and a fan is perfectly enough after a little while of adapting.