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Sicrhau gwaith rheoleiddio effeithlon ar gyfer defnyddwyr ynni
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Publication date
31 March 2011
Mae cadw costau rheoleiddio mor isel â phosibl wedi bod yn flaenoriaeth i Ofgem
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Sicrhau gwaith rheoleiddio effeithlon ar gyfer defnyddwyr ynni [PDF, 188.55KB]
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