The total amount of electricity generated in Wales has continued to fall since 2010, but much more gradually in each successive year, decreasing by 0.8% between 2012 and 2013.
Mae cyfanswm y trydan a gynhyrchir yng Nghymru wedi parhau i ostwng ers 2010, ond yn fwy raddol ym mhob blwyddyn olynol, gan ostwng 0.8% rhwng 2012 a 2013.