Many households in Wales have seen huge rises in their energy costs in recent months as their fixed deals have expired and they have found providers simply aren't offering anything cheaper than their standard rate.
Yet what they've seen is only the start. The UK's price cap, set by regulator Ofgem, has kept gas and electricity fees charged by the UK's energy firms artificially below the wholesale rate those suppliers are playing. It has led to a wave of bankruptcies among smaller providers.
And we found on on Thursday what will happen when the cap expires. Regulator Ofgem is obliged to look at underlying energy costs to set a cap that is fair to suppliers and customers. The cap was last updated in August before what it describes as "the unprecedented spike in costs the market is facing". And it is now allowing energy bills to rise by 54%.
