This certification lab class allows students to apply in the field the concepts introduced in REEN 160. Discusses industry-defined standards, basic energy efficiency improvements, how to evaluate energy consumption, and how to calculate energy costs. Other topics include how to use industry tools to measure energy consumption in residential settings and preparation for the Building Performance Institute (BPI) Building Analyst field exam. Along with a written exam, a field exam enables students to complete the BPI certification process. It is strongly recommended that a student pass REEN 160 and the BPI written theory test before taking REEN 161.