Johnson Controls first introduced hybrid electric vehicles into its fleet in 2009. Today, it operates more than 500 hybrids, each reducing greenhouse gas (GHG) emissions by 30%, and together saving $500,000 in fuel costs during the first two-and-a-half years of operation. In 2011, Johnson Controls deployed 20 all-electric vans, estimated to achieve a 61% GHG reduction per vehicle. The fleet's strategies also include the use of compressed natural gas, propane, more fuel-efficient vehicles, and telematics.