A yw'r grŵp cynghori annibynnol ar drawsyrru trydan wedi cael yr adnoddau i gomisiynu tystiolaeth arbenigol ar wahaniaethau costau rhwng llinellau uwchben a thanddaearol?
Wedi'i ateb gan Ysgrifennydd y Cabinet dros yr Economi, Ynni a Chynllunio
| Wedi'i ateb ar 06/02/2025
The Independent Advisory Group includes members with expertise in many areas including technical aspects of networks, which they are drawing on extensively. They are identifying and reviewing existing information relevant to the purpose of the group. The secretariat is commissioning organisations which have access to recent cost information to provide evidence. The group has not yet completed its review of the evidence to identify whether additional evidence needs to be commissioned.