Conk has a good response but you also have to realize that it's still too expensive to setup a battery as well. So, since the grid will be needed, you'll need c

Conk has a good response but you also have to realize that it's still too expensive to setup a battery as well. So, since the grid will be needed, you'll need conversion to be able to handle the fluctuating demand your home requires. And don't install new devices, as that can change your equation but connecting back to the grid allows much needed simplicity. Other companies are working on this (energy sovereignty) issue, my guess it (stand alone affordable systems) will be solved within the next twenty years and be affordable. DC use might be apart of it but I'm doubtful since there is a level of complexity that each device is using different amps/volts/etc that will take new products to solve and the independent grid system still takes a lot of capital.