"Efficiency technologies" refers to tools, equipment, or processes that help to save time, effort, or resources in order to achieve better outcomes or results. Full definition
An «efficient truck» is defined as one with a package of efficiency technologies [2] providing around 40 percent efficiency improvement compared to 2008 vehicles. (drawdown.org)
Several automakers used it as a compliance strategy and avoided investing in other fuel efficiency technologies. (ucsusa.org)
These range from energy efficiency technologies for buildings, or industry sectors where currently the technology is largely absent, like in maritime shipping or on sustainable island nations. (climateactionprogramme.org)