Super Energy Apocalypse: RECYCLED by Brain Juice Games is a Real Time Strategy game (RTS) that explores the pros and cons of different energy-economies by taking real-life data and simulating it in a science-fiction world that turns long-term consequences into immediate consequences.
ElectroCity is a fun little sim game from New Zealand designed to "spark an interest and lay an unbiased foundation for later learning" about the topics of energy policy and environmental impact. It plays like a very simplified version of SimCity, instead oh having to plan out every detail, you just chose how to use a few large squares of land, either for mining, building power plants, or using the land to create jobs, increase tourism, or decrease environmental impact. You have to balance population growth, happiness, and energy use with environmental impact, and the city budget. You get graded in each category at the end with a simple A+ through F scale.