I'm curious to see what comes of V2G tech and other home battery systems. I know that Panasonic[1] & Enphase[2] have their own systems rolling out. Adding these systems to new home builds makes a lot of sense to me in the interest of future-proofing.
Here's an interesting example where a new housing development in Las Vegas built all the houses with battery storage as well as solar generation for the entire neighborhood[3]