Mae consensws mai y rhwystr mawr i gynhyrchu mwy o ynni adnewyddadwy yng Nghymru yw capasiti yn y rhwydweithiau sy'n gyfrifol am gysylltu cartrefi ac adeiladau â thrydan a nwy. Mae hyn yn rhwystr i fuddsoddi sy'n effeithio ar dechnolegau ac ar draws sectorau preifat, cyhoeddus a chymunedol yng Nghymru ar bob graddfa, er ei fod hefyd yn sbarduno arloesedd mewn systemau ynni lleol. Er bod gan gwmnïau y rhwydwaith a'r rheoleiddiwr ynni, Ofgem, gynlluniau ar waith i gyflwyno buddsoddiad yng Nghymru, mewn mecanweithiau hyblygrwydd ac mewn seilwaith newydd, roedd cytundeb bod angen mwy o weithredu i wella tryloywder ar gyfyngiadau a chyfleoedd o fewn y rhwydwaith a dod â mwy o eglurder a sicrwydd ynghylch lle mae angen buddsoddiad strategol yn y rhwydweithiau.
There is consensus that a major barrier to scaling up renewable energy generation in Wales is insufficient capacity in the networks responsible for connecting homes and buildings with electricity and gas. This is a barrier to investment impacting across technologies and across private, public and community sectors in Wales on all scales, though it is also driving innovation in local energy systems. While the network operators and the energy regulator, Ofgem, have plans in place to bring forward investment in Wales, both in flexibility mechanisms and in new infrastructure, there was agreement that more action is needed to improve transparency on constraints and opportunities within the network and bring greater clarity and certainty on where strategic investment in the networks is needed.