I did a new rendering, this time with a photo background. It shows the slope of the terrain and the zany pier foundation. It does not show any stairs leading to the main entrance. And, by golly, why should it? Who needs 'em!
ETA: When describing this rendering on Twitter I said, "It looks like Vietcong HQ, only with fewer thermal bridges."
Before installing solar panels, get a home energy audit to find out where you're wasting the most energy. Your house will be more comfortable if you seal leaks and add more insulation, so don't just slap solar panels on the roof without curbing energy use.