Defnydd trydan eich ysgol bob hanner awr ar eich diwrnod dewisol
Newid unedau
Nid oes gennym ddigon o ddata ar hyn o bryd i arddangos y siart hwn
Mae data Electricity ar gael o Llun 24ain Awst 2020 i Llun 29ain Ebr 2024
Mae Sbarcynni yn cefnogi Ysgol y Frenni mewn partneriaeth â Egni Coop
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