Several senior figures in Wales have called for the Big Six energy suppliers to face a public inquiry into the rising cost of gas and electricity.
Among the 18 signatories backing the move are the Archbishop of Wales Rev Barry Morgan and Plaid Cymru's Westminster leader Elfyn Llwyd, the Western Mail reports.
In a letter to a national newspaper, they stated: "In recent months energy companies have once again been exposed for overcharging customers and making profits at the expense of ordinary people."
It called for the establishment of an independent public inquiry so Ofgem, the government and the public are able to "know what measures are needed to have a market that serves people."
This comes after a year in which all the Big Six providers implemented large price hikes - blaming an increase in wholesale costs - and although January saw the firms reduce their tariffs, this was by a much smaller amount than the previous hikes.
The publication observed the companies made around £3.5 billion profit in the first half of 2011, while at the same time 5.5 million households were classed as being in fuel poverty.
Deputy senior editor of Consumer Focus Wales Rhys Evans added a long-term solution is required in order to ensure the market works effectively for customers.
He said it is vital to find better ways to combat fuel poverty and improve the country's energy efficiency.
Recently, the Independent reported a campaign to force the Big Six suppliers to put more of their profits into such schemes received the backing of politicians from all parties.
Make sure you're not paying too much for your energy - compare gas and electricity prices now at energyhelpline.com or call 0800 074 0745