During a presentation at the recent 2011 Electric Utility Fleet Managers Conference, fleet managers discussed their experience with putting medium-duty diesel-electric hybrid trucks into full-time day-to-day work. Better fuel economy and significant downturn in engine idling time were reported by Duke Energy on their 2009 model year hybrids. Service work for hybrids takes longer than expected because of the need to find experienced support. Pacific Gas & Electric, with 3500 pickup trucks, is re-evaluating the business case for hybrids. PG&E uses an electric-vehicle research center to validate different alternative technologies. Florida Power & Light has 21 hybrid line trucks and a total of 364 hybrid vehicles, trimming total fuel use by 10% from 2006 to 2010.