For some retailers a cash increase in their energy bills of £20,000 would require an increase in sales of nearly £100,000 to pay that billl.
I rai manwerthwyr, byddai cynnydd arian parod o £20,000 yn eu biliau ynni yn gofyn am gynnydd o bron i £100,000 mewn gwerthiannau er mwyn talu'r bil hwnnw.