After finishing this lesson, you will be able to discuss a power plant’s potential environmental impacts and describe methods to minimize them. • Explain the relationship between power plant unit efficiency and environmental impact • List some categories of environmental impact associated with power plants • Discuss the negative and positive effects of greenhouse gases • Identify the environmental effects of improper boiler combustion • Define the following terms as they apply to boiler combustion: – Greenhouse gases – Incomplete combustion • Describe methods of removing environmentally unfriendly substances from boiler flue gas