This is nice concept and a pretty good proof of concept. As you said, it still needs a lot of working, but it has pretty good potential. What you have runs pretty well and looks nice, no strange looking UI or any obvious bugs to speak of. AsE_CG's comment summed up my thoughts on this pretty well. I also played the web version and had no issues. You could take this idea a bunch of different ways, so I'm curious to see which you choose. May have to visit this project at a later date.

Neat browser game, and I loved the premise!  Solar power advocation is always a good thing lol.  I feel like the bones are really good, the game is fun already and I can see a lot of potential for some tycoon-esque and puzzle game elements that could start to come in to play.  I didn't mind the memory game aspect as it is now, I was able to come up with a system for the sales pitch and installation that worked pretty well for trying all the options with minimal accidental repeats.  I do agree with the other comment about some visual cues when the game starts to scale bigger, I could see trying to remember things on a larger grid being more of a challenge.  Good start though I would be interested to see where you wind up taking things with the project.

Feedback Question: The game ran smoothly and I did not notice any issued with lag or game speed.  I played the web version and had no issues during gameplay.

Overall I enjoyed it quite a bit!  I played it on the web browser and it seemed to run smoothly.  It took me a second to get a hang of what was going on.  I would say that some visual clues on the size of the houses would be helpful, and maybe a graphic for the houses that you've been to for the next day (like you left a flyer or business card for them).