Talk:Nuclear Reactor/@comment-60.225.85.241-20120925085324/@comment-84.241.204.139-20120926162402

Every connection between cells counts as 2 bonus cells. So 2 connected cells count as 4 in total. 4 cells in a 2x2 square count as 12, as the 4 connected sides make a total of 8 bonus cells.

Heat production goes up in the same fashion, making quick melt downs of tightly packed uncooled reactors.