To start with, difference between capacitors and batteries. Capacitor holds charge at both its plates due to an electric field impressed on the plates, whereas battery provides nearly constant potential difference at its terminals due to chemical reaction happening within it. read more
No you cannot use capacitors to power the house because of the following reasons. Capacitors don't store AC energy. They need to be charged constantly to get power. So there is need for another power source. Capacitors are not power sources so it It's difficult to use them as source. read more
We all know that capacitors are small electronic components installed in almost all of our normal house-hold day-to-day use appliances. A capacitor stores power and then releases at time of need. I am thinking, that maybe large size capacitors may already available in commercial markets. read more