This is a neat mod, but what's the philosophy behind each wall having 2x the cost of a normal wall plus nearly half the cost of a regular solar panel with only the same hp as a wall and 1/12th the power output (effectively ~6x the cost per kW)?
Why not have a solar panel and 9 wall as ingredients, and produce 9 walls with 5 kW each for a conversion of 60->45 (25% loss of power output)?