We should use efficient solar powered lights for most homes, especially for outdoor areas. Authorities can promote the use of such items and import them from overseas. Huge solar panels can be placed on top to accumulate reserve electricity and when it is all used, then it can switch to normal electricity. Place like Qatar, where weather is sunny most of the time can benefit from this. But I have yet to see any initiative to promote the use of solar energy here. Personally, I am using few solar powered lights to save electricity and also inserted filters for my faucets and shower head to efficient use the water.