A number of support schemes were introduced, such as the Energy Price Guarantee and the Winter Fuel Support Scheme in Wales, to reduce the impact of these increases on households and businesses.
Cyflwynwyd nifer o gynlluniau cymorth, fel y Warant Pris Ynni a’r Cynllun Cymorth Tanwydd Gaeaf yng Nghymru, i leihau effaith y cynnydd hwn ar aelwydydd a busnesau.