"Measuring Energy"

"Measuring Energy"
Fortune | February 2014

“In 2010 the Massachusetts Department of Transportation launched GreenDOT, an ambitious initiative to reduce the greenhouse gas emissions of the state’s transportation system 40% by 2020. When he heard the news, Tim Lasker, the sustainability specialist for the Massachusetts Bay Transportation Authority (MBTA), had one thought: How are we going to manage this? The first step was to review how much energy the MBTA was using for each task — but given that it was using different sources of energy (fuel oil, natural gas, electricity), how was Lasker to compare the efficiency of one to another?”