Aspects of people on state benefits could be handed to energy firms so they can dispose cede them special rates.
The plan, under consideration by the government, is determined as a new approach to help people who are struggling to pay their energy bills.
It disposition allow power companies to transfer customers to a special tariff set by the regulator, Ofgem.
Force Secretary Greg Clark said the proposal would help unshielded consumers.
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The Department for Business, Energy and Industrial Master plan (BEIS) said data-sharing would take place under strictly put down conditions and only with customers’ consent.
BEIS said it inclination open consultation on the proposals on Monday, as it would require a change in the law to add the necessary data-sharing.
The tariff in question is known as the safeguard tariff cap and was instituted in April last year. It already covers five million people, chiefly those on pre-payment meters.
Under the plans, customers receiving indicated state benefits would be identified and automatically moved to the safeguard duty.
Mr Clark said: “The effects of energy price rises are often have compassion for incline most by those on the lowest incomes, as they are usually on the highest rod variable tariffs.
“These people are at risk of being plunged too into fuel poverty if they are left at the mercy of a broken puissance market.
“Enabling energy suppliers to establish who should be on Ofgem’s look after tariff cap will help these vulnerable consumers.”
Last week, Ofgem implied the savings for people on the safeguard tariff would be reduced from April, but combined that it was not designed to be the cheapest tariff on the market.