On Sunday Centrica sought to deflect flak over another jump in annual profits by flagging up its importance to the UK economy.
Chief executive Sam Laidlaw said its contribution to GDP was equivalent to a city the size of Manchester, and its tax bill amounted to £158 for every UK household.
Centrica published the findings of its specially commissioned report ahead of an expected double-digit rise in profits after increasing bills by 6% for around 8.5 million households at the end of last year.
Mr Laidlaw said: "At a time of uncertain economic prospects, our activities across the UK are even more important to secure employment, put the supply chain to work and contribute our fair share of tax."
More top news
Following criticism from MPs and campaigners, the work and pensions secretary said the helpline would be free by the end of the year.
The unemployment rate fell to 1.4 million, a rate of 4.3%, in the three months to August - the joint lowest level since 1975.
One of the UK's best known travel brands will disappear on Wednesday following a revamp by its owner.