I Ianuali o 2010, lilo ʻo Toronto i ke kūlanakauhale mua ma ʻAmelika ʻĀkau e koi i ka hoʻokomo ʻana i nā hale ʻōmaʻomaʻo ma nā hale kūʻai hou, ʻoihana, a me nā hale noho lehulehu ma waena o ke kūlanakauhale. ʻO ka pule aʻe, e hoʻonui ʻia ke koi no ka noi ʻana i ka hoʻomohala ʻenehana hou pū kekahi.

ʻO ka'ōlelo maʻalahi,ʻo ka ¡°'ōmaʻomaʻo'ōmaʻomaʻo ¡± kahi hale i kanuʻia. Hāʻawi nā hale ʻōmaʻomaʻo i nā pono kaiapuni he nui ma o ka hoʻohaʻahaʻa ʻana i ka hopena o ka mokupuni wela o ke kūlanakauhale a me ka koi ʻana i ka ikehu e pili ana, e komo i ka wai ua ma mua o ka lilo ʻana i ka wai, hoʻomaikaʻi i ka maikaʻi o ka ea, a me ka lawe ʻana i ke ʻano a me nā ʻano like ʻole i loko o nā kaona o ke kūlanakauhale. I nā manawa he nui, hiki ke hauʻoli ʻia nā hale ʻōmaʻomaʻo e ka lehulehu e like me ka paka.

Hoʻokomo ʻia nā koi ʻo Toronto ¡¯ s i loko o ke kānāwai kūloko e pili ana i nā kūlana no ka wā e koi ʻia ai kahi hale ʻōmaʻomaʻo a me nā mea e pono ai i ka hoʻolālā. ʻO ka ʻōlelo maʻamau, ʻaʻole ʻae ʻia nā hale noho liʻiliʻi a me nā hale kalepa (e like me nā hale noho ma lalo o ʻeono papa ke kiʻekiʻe); mai laila, ʻoi aku ka nui o ka hale, ʻoi aku ka nui o nā mea kanu o ka hale. No nā hale nui loa, pono e kanu ʻia he 60 pakeneka o nā wahi i loaʻa ma luna o ka hale.

No nā hale ʻoihana, ʻaʻole koi nā koi. Pono ke kānāwai e uhi ʻia he 10 pakeneka o ka hale i loaʻa ma nā hale ʻoihana hou, ke ʻole ka hoʻohana ʻana o ka hale i ¡° cool roofing materials¡± no 100 pākēneka o ka hale i loaʻa a loaʻa i ka wai ʻino e hiki ke hopu i 50 pakeneka o ka ua makahiki ( a i ʻole ʻelima mm mua mai kēlā me kēia ua) ma ke kahua. No nā hale a pau, hiki ke noi ʻia nā ʻokoʻa i ka hoʻokō ʻana (e like me ka uhi ʻana i kahi wahi liʻiliʻi o ka hale me nā mea kanu) inā e hui pū ʻia me nā uku (ki i ka nui o ka hale) i hoʻokomo ʻia i nā mea hoʻoikaika no ka hoʻomohala ʻana i ka hale ʻōmaʻomaʻo ma waena o nā mea hale e kū nei. Pono e ʻae ʻia nā ʻokoʻa e ka ʻaha kūkā o ke kūlanakauhale.

Ua hoʻolaha ka hui ʻoihana ʻo Green Roofs for Healthy Cities i ka hāʻule hope loa ma kahi hoʻolaha hoʻolaha ua loaʻa mua nā koi o ka hale ʻōmaʻomaʻo o Toronto ma mua o 1.2 miliona kapuaʻi square (113,300 mau mika square) o nā wahi ʻōmaʻomaʻo hou i hoʻolālā ʻia ma ka ʻoihana, ʻoihana, a me nā ʻohana lehulehu. nā hale noho ma ke kūlanakauhale. Wahi a ka hui, e loaʻa nā pōmaikaʻi ma mua o 125 mau hana manawa piha e pili ana i ka hana ʻana, hoʻolālā, hoʻonohonoho a mālama ʻana i nā hale; ka emi ʻana o ka wai ʻino ma mua o 435,000 cubic feet ( lawa e hoʻopiha ai ma kahi o 50 mau loko ʻauʻau 'Olumepika) i kēlā me kēia makahiki; a me ka mālama ʻana i ka ikehu makahiki ma luna o 1.5 miliona KWH no nā mea hale. ʻO ka lōʻihi o ka hana ʻana o ka papahana, ʻoi aku ka nui o nā pōmaikaʻi.

Ua hoʻomohala ʻia ke kiʻi triptych ma luna e nā haumāna o ke Kulanui o Toronto e hōʻike i nā loli i hiki ke loaʻa mai nā makahiki he ʻumi o ka holomua ma lalo o nā koi o ke kūlanakauhale. Ma mua o ke kānāwai, ʻo Toronto ka lua ma waena o nā kūlanakauhale ʻo ʻAmelika ʻĀkau (ma hope o Chicago) i ka nui o ka uhi ʻōmaʻomaʻo o ka hale. ʻO nā kiʻi ʻē aʻe e hele pū ana me kēia pou (e hoʻoneʻe i kāu pihi ma luna o lākou no nā kikoʻī) e hōʻike ana i nā hale ʻōmaʻomaʻo ma nā hale like ʻole o Toronto, me kahi papahana hōʻikeʻike hiki ke ʻike ʻia e ka lehulehu ma ka Hale Hōʻikeʻike o ke kūlanakauhale.