Sorry Mr. Gopalan,
I dont want to hurt you !

I just expressed the difficult in that. We can purchase all these items with out any problem. But maintaining it or using it , will become a big problem than buying.
I can give you a small suggestion instead of shifting your house to some where in South, (hope you are in Chennai) you can go for a UPS, with good back up. That is you should be able to operate those items even you dont have 'currect supply'.
In Bangalore we are having one UPS,but with that we cannot operate Fridge, oven or washing machine. So if you put powder ful UPS you can use those machines with that. Hope this will help you.