O na! Mae defnydd cyfartalog trydan yn ystod gwyliau'r Pasg wedi cynyddu 19% o gymharu â gwyliau'r Hanner tymor y gwanwyn. Beth allwch chi ei ddiffodd i arbed ynni yn ystod y gwyliau nesaf?
You have completed 0/8 of the activities in the Byddwch yn Egniol! programme Complete the final 8 activities now to score 70 points and 30 bonus points for completing the programme
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