Over one in five energy consumers are now with small and medium sized suppliers, as more people switched to get a better deal last year.
This has left the six largest suppliers’ combined market share at a record low.
Last year, 5.1 million electricity consumers and 4.1 million gas consumers in total switched supplier, the highest number for almost a decade.
More than a third of these consumers switched from one of the six largest suppliers to rival companies. Many of these customers were switching for the first time.
The number of consumers with a small or medium-sized energy supplier reached a record high last year, continuing a sustained, long term movement away from the six largest suppliers.
In December last year, smaller and medium sized suppliers were supplying 21% of consumers for electricity and 22% for gas in December last year. In 2013 their market share was 4.7% for electricity and 5% for gas.
The six largest energy suppliers’ market share stood at 79% for electricity and 78% for gas in December 2017, down from 84% for both gas and electricity at the end of 2016.
While more people are switching to get a better deal, those who have never switched or rarely do so are still being overcharged.
Around 57% of non-prepayment meter consumers are on poor value standard variable rates, which can be as much as £300 more expensive than the cheapest deals on the market.
Ofgem is working to make switching easier, quicker and more reliable to help more people save money, particularly those on the worst deals, and this month launched the first-ever “simplified” collective switch.
Ofgem is also protecting those who don’t switch from being charged too much. Earlier this month the regulator extended the safeguard tariff, which already protects 4 million prepayment households, to almost 1 million more vulnerable consumers.
The regulator is working with the government to put in place a wider price cap to protect all consumers on the worst deals from being overcharged.
Consumers who are protected will still be able to save even more money by switching to a cheaper deal.
They might also want to switch to benefit from a range of new “smart” or digital products and services coming onto the market.
Dermot Nolan, chief executive of Ofgem, said: “The largest suppliers are under pressure as more consumers switch away to small and medium sized suppliers.
“With more customers voting with their feet, the message is clear: suppliers need look at what they are offering to their customers or risk losing them.
“Nevertheless, there are still too many consumers who are paying too much for their energy, which is why we are introducing price protection whilst we reform the market, to make competition work for all consumers.”
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Ofgem is the independent energy regulator for Great Britain. Its priority is to make a positive difference for consumers by promoting competition in the energy markets and regulating networks.
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