(1) Wutar lantarki tana amfani da wutar lantarki, mafi tsaftataccen makamashi. Sauran hanyoyin samar da makamashi kamar gawayi, coke, danyen mai, iskar gas, da dai sauransu babu makawa za su kawo najasa abubuwan da suka biyo baya cikin tsarin karafa. Tanderun lantarki ne kawai za su iya samar da allurai mafi tsabta.
(2) Wutar Lantarki shine kawai tushen makamashi wanda zai iya samun yanayin yanayin zafi ba bisa ka'ida ba.
(3) Wutar lantarki na iya samun sauƙin fahimtar yanayin yanayin zafi kamar oxygen partial pressure da nitrogen partial pressure da ake buƙata ta nau'ikan halayen ƙarfe daban-daban kamar raguwa, tacewa da nitriding.