You could have a highly efficient ICE that powers a DC bus in your home, that is also connected to your Solar array, that provides clean / efficient power to al

You could have a highly efficient ICE that powers a DC bus in your home, that is also connected to your Solar array, that provides clean / efficient power to all our devices. With recent advancements in electronics, DC power seems to be a good bet, especially when considering the ubiquity of solar systems.