A student can put the money into piles prior to starting the activity. Read each question to the group. At the end of the game, count the money in each envelope to show the students how much their energy habits are costing them. How much the student learns from this depends on you. Stress to the students that this is a game for them to see how much extra energy they really use, so it is best if they answer the questions honestly.
Utility companies produce good pamphlets with energy saving tips.
You could get copies for your students to take home as a follow-up to this activity. Using warm pajamas and blankets save the most energy. You can save money on air conditioning if you keep windows and doors closed during the heat of the day. At night you can turn off the air conditioner, open the doors and windows and turn on fans to get cool outdoor air into the house. This can get very expensive after a few loads of clothes.