▁mit ig ation . ▁They ▁are ▁vital ▁to ▁use ▁in ▁strateg izing ▁methods ▁to ▁adaptation , ▁being ▁necessary ▁while ▁climate ▁change ▁threat ens ▁the ▁world . ▁Pres ently ▁national ▁technology ▁systems ▁focus ▁on ▁growth ▁in ▁jobs ▁and ▁output , ▁instead ▁of ▁reducing ▁green house ▁gas ▁em issions ▁or ▁increasing ▁energy ▁efficiency . ▁Ada pt ation ▁strateg ies ▁are ▁meant ▁to ▁reduce ▁any ▁vulner ability ▁of ▁available ▁techn ologies ▁and ▁the ▁need ▁for ▁adaptation ▁at ▁all ▁with ▁scientific ▁techn ologies ▁including ▁energy ▁efficiency ▁improvements , ▁and ▁production ▁of ▁renew able ▁energy ▁( RE ), ▁nuclear ▁power / energy ▁( NE ), ▁and ▁carbon ▁capture ▁storage ▁( CC S ). ▁ ▁Energy ▁E ffic iency ▁Im prov ements ▁▁ ▁Energy ▁efficiency ▁is ▁a ▁concept ▁used ▁to ▁define ▁the ▁focus ▁of ▁tack ling ▁climate ▁change ▁by ▁creating ▁energy ▁efficient ▁techn ologies ▁and ▁products ▁( they ▁are ▁meant ▁to ▁use ▁less ▁energy ▁to ▁provide ▁the ▁same ▁service ). ▁Energy ▁efficiency ▁is ▁an ▁important ▁tool ▁for ▁climate ▁adaptation ▁because ▁it ▁pres erves ▁and ▁extends ▁resources ▁in ▁the ▁long - run . ▁It ▁also ▁minim izes ▁the ▁costs ▁for ▁the ▁state ▁in ▁adapt ing ▁the ▁energy ▁sector ▁for ▁climate ▁change . ▁The ▁least ▁cost ly ▁way ▁to ▁meet ▁the ▁increased ▁demand ▁for ▁energy ▁is ▁by ▁saving ▁energy . ▁However , ▁developing ▁countries ▁struggle ▁with ▁the ▁trade - off ▁between ▁energy ▁efficiency ▁and ▁economic ▁performance ▁in ▁keeping ▁up ▁with ▁their ▁expand ing ▁econom ies , ▁since ▁they ▁require ▁large ▁increases ▁in ▁energy ▁production ▁and ▁consumption . ▁Im pro ving ▁energy