Some additional changes we made were replacing the electric tank water heater with a gas tankless system, replacing old windows with more energy efficient ones, and when we decided to add a parking space for my father-in-law's entrance to the house we opted for a permeable parking system. That choice was inspired by (though it looks nothing like) the amazing parking system that we saw when we visited The Wild Center in Tupper Lake, NY. (https://www.wildcenter.org/thrive-together/sustainable-building/our-green-facility/) Those water penetrable paver lots made such an impression on us we carried the thought of them with us for four years. Thanks, Wild Center!
We had just started talking about it again when I saw that a former colleague is working as a sales rep for a solar company. I chatted with her a bit, did some research on the company, and then she came to meet with us to discuss the process. We were excited by the options presented to us, and couldn't wait to get started.