Finally, it will study the long-term efficacy of the retrofits in terms of how many gallons of oil or water, or kilowatt-hours of electricity, the changes saved, and translate this into dollar figures.
The UCS study expressed the results in terms of miles per gallon instead of the conventional unit of grams of greenhouse gases or carbon dioxide equivalent emissions per year in order to make the results more friendly for consumers.
The following table shows the overall fuel economy expressed in terms of miles per gallon gasoline equivalent (mpg-e) and the utility factor for the ten MY2014 plug-in hybrids available in the U.S. market, and EPA's best estimate of the tailpipe emissions produced by these PHEVs.
Although the treatment plant removes a "substantial portion" of the wastewater's radioactivity, explained Climate Central, the study raises questions about long-term contamination when billions of gallons of contaminated water are treated at a site.
Consider this as a rule of thumb: Whenever you see water use denominated in millions of gallons, in California terms that's a tiny drop in a very big bucket.
The efficiency of a car engine can be defined in terms of a miles-per-gallon equivalent.
The analysis found that the cost of an equivalent electric-gallon of gasoline would have been not only cheaper to operate during the entire analysis period but also that equivalent electricity prices are more stable and have been declining in terms of equivalent dollars per gallon.
Traditionally, most customs and excises had "specific" rates; the tax base was defined in terms of physical units such as gallons, pounds, or individual items.
At an equivalent in energy terms of around $2.20 a US gallon, CNG costs a little over half what Americans pay for petrol.
