I will be brave and take a guess, going from left to right.
I think this first building is the science spending building.
The second one is either a green house for food production, or the new homes.
The Big M, looks like a subway station or other form of transportation.
The forth building looks like some sort of resource storage. I would guess oil, but could be for the new energy.
The last and final building looks like a power plant.
Now I am anxious to see what all of you think they could be.