Mass production of inverter

[red_alert]

Google says (about household inverters):

Making them smaller would enable more solar-powered homes[..].

I don't think that "smaller" it's the key but "cheaper". How small a house it's supposed to be to not fit an actual inverter form factor? I bet if someone would sell me a 2-3KW inverter for 50$, I'll build a separate room for that inverter.

Anyway, any contest like this it's actually a creative ideas hunting. One million dollars for a brain storming will make Google the main worldwide supplier of household inverters. Good luck, mrinalmani!

 

[mrinalmani]

Thanks!
The input voltage for the inverter is 415VDC, so anyway not intended for house-hold purpose!
There may be several reasons behind this competition. Advertisement of wide-band semiconductor companies being one of them.