Original sentence: )  In light of this, some local governments have worked toward a more integrated approach to energy and water conservation efforts.A study of a similar device deployed in 500 Ontario homes by Hydro One  showed an average 6.5% drop in total electricity use when compared with a similarly sized control group.Department of Energy (DOE), as a rule of thumb, each  you drive over  is similar to paying an additional $0.30 per gallon for gas  The exact speed at which a vehicle achieves its highest efficiency varies based on the vehicle's drag coefficient, frontal area, surrounding air speed, and the efficiency and gearing of a vehicle's drive train and transmission.Recently, low cost energy feedback displays, such as The Energy Detective or wattson , have become available.See Passive house, Superinsulation, Self-sufficient homes, Zero energy building, Earthship, MIT Design Advisor, Energy Conservation Code for Indian Commercial Buildings.The energy required for delivery and treatment of fresh water often constitutes a significant percentage of a region's electricity and natural gas usage (an estimated 20% of California's total energy use is water-related
Edited sentence: A study of a similar device deployed in 500 Ontario homes by Hydro One showed an average 6.5% drop in total electricity use when compared with a similarly sized control group.Department of Energy (DOE), as a rule of thumb, each  you drive over  is similar to paying an additional $0.30 per gallon for gas.In light of this, some local governments have worked toward a more integrated approach to energy and water conservation efforts.Passive house.Recently, low cost energy feedback displays, such as The Energy Detective or wattson, have become available.Self-sufficient homes.The energy required for delivery and treatment of fresh water often constitutes a significant percentage of a region's electricity and natural gas usage (an estimated 20% of California's total energy use is water-related).The exact speed at which a vehicle achieves its highest efficiency varies based on the vehicle's drag coefficient, frontal area, surrounding air speed, and the efficiency and gearing of a vehicle's drive train and transmission.Zero energy building