Okay this is really a domestic issue, however, a number of members have recently been in touch to ask about the Government Support for off grid energy users. In brief, there are 3 different schemes all of which are separate from one another. Provided households are eligible of course, they can benefit from all three too.
The UK Government is about to make available a £200 ‘Alternative Fuel Payment’ (AFP) to help towards heating costs for those who do not heat their home via gas or electricity. Most households eligible for this across GB (and including Wales) will receive it automatically via their electricity supplier in February, with no need to take action. However, some will need to apply for it - e.g. because they don't have a direct relationship with their supplier themselves - and will be able to do so via a portal on GOV.UK (which is being set up and will also be used for a different UK Govt scheme too).
Link here: www.gov.uk/government/news/vital-help-with-energy-bills-on-the-way-for-millions-more-homes-across-great-britain-and-northern-ireland
The Welsh Government also has a £200 Welsh Fuel Support Scheme, available to help eligible households with their energy costs this winter, irrespective of how you pay for energy and whether you're on or off-gas. That's available to claim now via your local authority. More details here: https://www.gov.wales/wales-fuel-support-scheme-2022-2023
Further, households in crisis who must prepay for their energy (either on gas or electricity prepayment meters or b/c they're off-gas and need to purchase oil/LPG etc upfront) can also apply for emergency assistance. There is in fact two schemes to help with this in Wales. The national £4m Fuel Voucher Scheme delivered in partnership with the Fuel Bank Foundation (that you link to in your email) and the Welsh Government's Discretionary Assistance Fund.