qaarkood waxay cabbiri karaan baahida, isticmaalka ugu sarreeya ee awoodda wakhti yar. "Waqtiga Maalinta" Qiyaasta waxay u oggolaaneysaa qiimaha korantada in la beddelo inta lagu jiro hal maalin, si loo diiwaan geliyo isticmaalka inta lagu jiro muddooyinka kharashka badan iyo qiima-sarre, qiimaha hoose, muddooyinka. Sidoo kale, meelaha qaarkood metelaadu waxay u gudbinayaan dalabka culeyska culus ee daadinta xiliga lagu jiro xilliga culeyska culus. Qaybta ugu caansan ee cabbirka mitirka korontada waa saacad kowda [kWh], taas oo la mid ah qadarka tamarta loo isticmaalo kiilo hal kiilo hal saac gudaheed, ama 3,600,000 joules. Qaar ka mid ah shirkadaha korontada waxay isticmaalaan halkii malyuun ee SI Megajoule. Badanaa waxaa lagu qiyaasi karaa watts, laakiin celcelis ahaan mudo ah, inta badan afar jeer ama nus saac. Awoodda jawaab celinta waxaa lagu qiyaasaa "kumanaan wakhti firfircoon" -waxbarasho (kvarh). Marka la gaaro shirarka, "gundhig" ama gaabis ah, sida mootada, waxay yeelan doontaa awood wanaagsan oo firfircoon. "Hogaamiye", ama culays awood leh, waxay lahaan doontaa awood aan fiicnayn.