The scale of costs involved in funding grid infrastructure mean that the general or economic case for Welsh Government to financially contribute to this was extremely difficult to justify.
Mae maint y costau sydd ynghlwm ag ariannu seilwaith y grid yn golygu bod yr achos cyffredinol neu economaidd i Lywodraeth Cymru gyfrannu'n ariannol at hyn yn anodd iawn i’w gyfiawnhau.