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  • Reinforcement and refurbishment work
    Pentir to Trawsfynydd reinforcement and refurbishment project The project Reinforcement and refurbishment work New infrastructure Document library Home Reinforcement and refurbishment work The existing network runs south on overhead lines from the …
  • New infrastructure
    Pentir to Trawsfynydd reinforcement and refurbishment project The project Reinforcement and refurbishment work New infrastructure Document library Home New infrastructure Connecting with the new Eryri underground cables A section of the overhead line …
  • Meet the team
    Pentir to Trawsfynydd reinforcement and refurbishment project The project Reinforcement and refurbishment work New infrastructure Meet the team Document library Home Meet the team We think it’s really important to share information about our project with …
  • Document library
    Pentir to Trawsfynydd reinforcement and refurbishment project The project Reinforcement and refurbishment work New infrastructure Document library Home Document library In this library you can view documents we’ve produced for the Pentir to Trawsfynydd …
  • Prosiect i atgyfnerthu ac adnewyddu'r cysylltiad rhwng Pentir a Thrawsfynydd
    Prosiect i atgyfnerthu ac adnewyddu'r cysylltiad rhwng Pentir a Thrawsfynydd Y prosiect Gwaith atgyfnerthu ac adnewyddu Seilwaith newydd Llyfrgell ddogfennau Home Y prosiect Newyddion diweddaraf – Ionawr 2026  Ym mis Medi 2025, cynhaliwyd pedwar gwahanol …
  • Gwaith atgyfnerthu ac adnewyddu (Reinforcement and refurbishment work)
    Prosiect i atgyfnerthu ac adnewyddu'r cysylltiad rhwng Pentir a Thrawsfynydd Y prosiect Gwaith atgyfnerthu ac adnewyddu Seilwaith newydd Llyfrgell ddogfennau Home Gwaith atgyfnerthu ac adnewyddu Mae'r rhwydwaith presennol yn rhedeg tua'r de ar linellau …
  • Seilwaith newydd (New infrastructure)
    Prosiect i atgyfnerthu ac adnewyddu'r cysylltiad rhwng Pentir a Thrawsfynydd Y prosiect Gwaith atgyfnerthu ac adnewyddu Seilwaith newydd Llyfrgell ddogfennau Home Seilwaith newydd Cysylltu â cheblau tanddaear newydd Eryri Mae rhan o’r llinell uwchben sydd …
  • Cyfarfod â'r tîm
    Prosiect i atgyfnerthu ac adnewyddu'r cysylltiad rhwng Pentir a Thrawsfynydd Y prosiect Gwaith atgyfnerthu ac adnewyddu Seilwaith newydd Cyfarfod â'r tîm Llyfrgell ddogfennau Home Cyfarfod â'r tîm Credwn ei bod yn bwysig iawn i ni rannu gwybodaeth am ein …
  • Llyfrgell ddogfennau
    Prosiect i atgyfnerthu ac adnewyddu'r cysylltiad rhwng Pentir a Thrawsfynydd Y prosiect Gwaith atgyfnerthu ac adnewyddu Seilwaith newydd Llyfrgell ddogfennau Home Llyfrgell ddogfennau Yn y llyfrgell hon, cewch weld dogfennau yr ydym wedi’u paratoi ar …
  • Melksham Substation
    Melksham Substation Home We’re upgrading our existing Melksham substation so we can safely connect new sources of low carbon energy generation and energy storage to our network.  This work will install what is known as a supergrid transformer, as part of …