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Gas and Electricity Markets Authority
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midata in energy project
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Understanding trends in energy prices
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Publications library: Gas retail market
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Forums, seminars and working groups
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Forums, seminars and working groups
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midata in energy project
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Adroddiad a Chyfrifon Blynyddol
Ar faterion amgylcheddol a chynaliadwyedd
Awdurdod Marchnadoedd Nwy a Thrydan
Cysylltiadau Llywodraeth a Seneddol
Fforymau, seminarau a gweithgorau
Grŵp Cynghori Datblygu Cynaliadwy
Hybu gwerth am arian
Polisi Corfforaethol, Cynllunio ac Adroddiadau
Polisi Corfforaethol, Cynllunio ac Adroddiadau
Household gas and electricity guide / Arbed arian ar eich biliau nwy a thrydan
Household gas and electricity guide / Cael neu newid cysylltiad nwy neu drydan
Household gas and electricity guide / Canllaw ar nwy a thrydan ar gyfer cartrefi
Household gas and electricity guide / Cofrestr Gwasanaethau â Blaenoriaeth ar gyfer pobl mewn angen
Business gas and electricity guide / Contractau ynni i fusnesau
Household gas and electricity guide / Cwyno am eich bil neu'ch cyflenwr trydan neu nwy
Cymharu perfformiad cyflenwyr o ran cwynion
Cymharu perfformiad cyflenwyr o ran gwasanaeth cwsmeriaid
Household gas and electricity guide / Cymharu tariffau nwy a thrydan: Gwefannau cymharu prisiau wedi'u hachredu gan Ofgem
Household gas and electricity guide / Cynhyrchu ar y safle a mesuryddion
Business gas and electricity guide / Cynhyrchu ynni adnewyddadwy
Household gas and electricity guide / Cynlluniau cymorth a chyngor ar arbed ynni
Household gas and electricity guide / Cynlluniau cymorth a chyngor ar wresogi'r cartref
Household gas and electricity guide / Cysylltiadau a symud tŷ
Data cymharu cyflenwyr ynni
Household gas and electricity guide / Deall eich biliau nwy a thrydan
Household gas and electricity guide / Deall eich mesurydd ynni
Household gas and electricity guide / Diogelwch eich hun rhag twyll ynni a galwadau di-groeso
Egluro ynni: Fideos a ffeithiau cyflym
Household gas and electricity guide / Esbonio termau a materion allweddol
Business gas and electricity guide / Esbonio termau a materion allweddol
Business gas and electricity guide / Fideos, dalenni ffeithiau a newyddion
Household gas and electricity guide / Gwasanaeth cronfa ddata cwsmeriaid ynni Ofgem
Business gas and electricity guide / Gwneud cwyn neu ymholiad
Household gas and electricity guide / Gyda phwy y dylid cysylltu os bydd yn anodd talu biliau ynni
Household gas and electricity guide / Help ychwanegol gan wasanaethau ynni
Household gas and electricity guide / Iawndal os bydd problem newid cyflenwr ynni
Business gas and electricity guide / Mae defnyddwyr busnes
Household gas and electricity guide / Mesuryddion deallus: Eich hawliau
Business gas and electricity guide / Newid eich cyflenwr ynni
Household gas and electricity guide / Ôl-filio ynni: Eich hawliau
Household gas and electricity guide / Pwy yw fy nghyflenwr nwy neu drydan?
Household gas and electricity guide / Rheolau ar ddatgysylltu cyflenwad ynni a mesuryddion rhagdalu
Household gas and electricity guide / Rhwyd ddiogelwch Ofgem: Os bydd eich cyflenwr ynni yn mynd i'r wal
Household gas and electricity guide / Sut i newid cyflenwr ynni a siopa am gynnig gwell
Household gas and electricity guide / Sut i newid cyflenwr ynni os ydych mewn dyled
Household gas and electricity guide / Sut i newid cyflenwr ynni os ydych yn denant
Household gas and electricity guide / Sut i ymdrin â phobl gwerthiannau ynni
Household gas and electricity guide / Toriadau pŵer: Cymorth ac iawndal o dan y Safonau Gwarantedig
Cwynion yn y CGA Domestig
A oes cap ar bris fy mil ynni?
Adnoddau capiau ar brisiau ynni
Atebion i'ch cwestiynau: Capiau ar brisiau ynni
Cap ar brisiau rhagdalu
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Capiau ar brisiau ynni
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Am y cynllun ECO
Cwestiynau cyffredin ar gyfer defnyddwyr domestig
Cyflwyno eich darlleniad mesurydd
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Cysylltiadau, cyfeiriadau ac adnoddau
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Oes angen mesurydd arnai?
Rheolau ar gyfer defnyddio tanwydd biomas
Network regulation – the 'RIIO' model
Y rhwydwaith ynni: sut mae'n gweithio i chi
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Tomorrow's energy and the future consumer
Network regulation - the RIIO model
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