content: Each house can deal with its own storage problem based on their needs. Freeze ice during the day to keep things cool overnight. Use laptop batteries and cell phones. Change to 12 volt appliances like the RV people do. The off grid people have worked out all of the problems. If I lived in a house where I could install PV I would replace my gas car for an EV and store excess power in its battery. Not everyone has to do this for it to improve things. Each person can make their own decisions about how they will use energy. Commerce  and personal financial decisions will likely drive this more than government policy at this point.