Our power here has been out once for several hours in the almost 3 years we’ve been here and that was because lightning struck the ground and caused a fire but since we’re concerned about a nationwide grid problem,, your system wouldn’t offer us much peace of mind. Even though the system costs quite a bit more to store it, that’s our main reason for wanting it. Our cost of electricity is so low here, that otherwise, we wouldn’t even go with solar.
I wouldn’t make a blanket statement that buyers wouldn’t be willing to pay for the cost of solar. I think anyone who is concerned about our power grid, or anyone who is concerned about power usage and knows the costs involved with installing a solar system would be happy to pay the extra costs if they found a home that was already operating on solar power.