Club wars - Feedback

My club president accidentally started our first war, and we as a group were largely won over. We decided to go again, and had fun w planning strategy. But, our attack phase started & for most of us each attack used 2 or 3 times as much energy as advertised, so we spent stupid amounts of time & resources to gather materials that now crowd our inventories while we wait a ridiculously long time for our mis-used energy to recharge. The cost of war items needs to be better balanced, and this apparent energy bug needs to be fixed. Pretty fed up at the moment.