Wahi a nā hōʻike hoʻolaha haole, ʻo ka US steelmakers Nucor, Cleveland Cliffs a me BlueScope Steel Group's North Star steel plant ma ʻAmelika Hui Pū ʻIa e hoʻolilo ʻoi aku ma mua o $ 1 biliona i ka hoʻoili ʻana i ka ʻōpala i ka makahiki 2021 e hoʻokō ai i ka ulu ʻana o ka mākeke kūloko ma United States.
Ua hōʻike ʻia e piʻi aʻe ka hana kila US ma kahi o 20% i ka makahiki 2021, a ke ʻimi nei nā mea hana kila o ʻAmelika i kahi lako paʻa o nā lako maka mai nā kaʻa i ʻoki ʻia, nā paipu aila i hoʻohana ʻia a me nā ʻōpala hana.Ma ke kumu o ka hoʻonui kumulative o 8 miliona tons o ka mana hana mai 2020 a 2021, ua manaʻo ʻia ka ʻoihana kila US e hoʻonui i ka mana hana kila palahalaha makahiki ma kahi o 10 miliona tons e 2024.
Ua hoʻomaopopo ʻia ʻo ke kila i hana ʻia e ke kaʻina hoʻoheheʻe ʻia ʻana o ke kila ma muli o ka umu ahi arc i kēia manawa ma kahi o 70% o ka nui o ka hana kila ma ʻAmelika Hui Pū ʻIa.ʻO ke kaʻina hana e hoʻokuʻu i ka carbon dioxide haʻahaʻa ma mua o ka hoʻoheheʻe ʻana i ka hao i loko o nā umu ahi i hoʻomehana ʻia e ka lanahu, akā hoʻokau pū kekahi i ka mākeke ʻōpala US.Wahi a nā helu helu mai Pennsylvania-based consultancy Metal Strategies, ua piʻi aʻe nā kūʻai ʻōpala e nā mea hana kila US i 17% i ʻOkakopa 2021 mai hoʻokahi makahiki ma mua.
Wahi a nā helu helu mai World Steel Dynamics (WSD), ma ka hopena o 2021, ua piʻi aʻe nā kumukūʻai o ke kila kila US ma ka awelika o 26% no ka ton i hoʻohālikelike ʻia me ka manawa like ma 2020.
"I ka hoʻonui ʻana o nā wili kila i ko lākou mana EAF, ʻoi aku ka liʻiliʻi o nā kumuwaiwai kiʻekiʻe," wahi a Philip Anglin, Luna Nui o World Steel Dynamics.