Biogas Yana da babban ƙarfin makamashi wanda aka samo ta hanyar sharar gida daga narkewar anaerobic. Haɗin sa shine asalin carbon dioxide da methane. Ana fitar da wannan gas ɗin daga kwandon shara saboda bututun da ke watsa iskar gas ɗin da samfuran sharar ƙwayoyi suka samar. Yana da wani nau'i na sabunta makamashi ana amfani dashi azaman mai kuma da shi za'a iya samar da makamashi kamar yadda yake tare da iskar gas.
Domin sauƙaƙe matsalolin gudanarwa na slurry a yankuna daban-daban tare da mafi girman aladu a cikin Andalusia, da Ƙungiyar Agroenergy na Campillos SL. (Málaga) ya fara tsirar da gas. Saboda biogas abu ne mai sabuntawa, tunda ana amfani da sharar dabbobi, yana taimakawa rage farashin kayan masarufi ta hanyar samar da makamashi sama da 16 miliyan kWh a kowace shekara.
Shuka na da ikon magancewa Tan 60.000 a kowace shekara na slurry kuma baya ga samar da makamashi ta hanyar amfani da gas, zai samar Tan 10.000 a shekara na takin zamani don wasu amfanin gona. Ilsasa na aikin gona suna fuskantar matsin lamba na yau da kullun kuma suna rasa humus, wanda shine dalilin da yasa takin ke taimakawa a matsayin ƙarin wadataccen humus kuma yana aiki azaman taki. Agroenergía de Campillos SL. yana da tsarin kasuwancin koren kore tare da kamfanoni masu kewaye. Tsire-tsire mai maganin biogas yana kula da sharar daga waɗannan kamfanonin kuma a cikin wadata ya samar musu da makamashi mai tsabta.
Wannan ƙarni na sabunta makamashi daga sharar gida yana taimakawa rage hayaki mai gurbata yanayi da kusan Tan 13.000 a shekara. Sabili da haka, shuka ta zama abin misali a kasar Andalus don kasancewarta shuka ta farko da zata inganta kasuwanci da makamashi mai sabuntawa da kuma samar da takin zamani a matsayin takin zamani.