Exactly! If daytime electricity was cheap enough I would double the size of my refrigerator and fill it with water to increase thermal mass. At night time it would stay cold enough to not use any power. Almost all energy except lighting is good to go. My laptop already has enough power to last the evening. I just need a few watts for the router.
I live in central Texas and my biggest energy consumer is air conditioning. Rooftop solar makes a lot of sense for me because I use the most energy when the sun is shining. I've never seriously considered storage.
