Other small energy providers may fail this winter, analysts say, leading to potential perturbations and higher costs for customers .
He followed a series of similar collapses and analysts say five or more could go on with the rise in winter costs.
If so, domestic customers & # 39; offer is protected but their tariff is not.
When an energy company ceases to sell its customers, they are automatically transferred to a new supplier. All the credit they have, because they used less energy than they paid, is reported. The Ofgem regulator announced that Ovo Energy will hire 235,000 Economy Energy customers.
However, in such cases, customers receive a new tariff with the new supplier which may be more expensive than their current agreement.
were invited to consider customer service scores and price when switching to a new supplier.
What went wrong for small suppliers?
In the last year, some small energy suppliers have failed, including Spark Energy, extra energy, energy of the future, national gas and energy, Iresa energy, Gen4U, One Select, Usio energy and more recently energy for the economy.
Many have struggled with customer requests and complaints, leading to the control of the Oggem.
According to Ellen Fraser, energy analyst at Baringa Partners, some simply ran out of money.
"It's a very cash-rich market," he said, noting that the energy is purchased in advance with the customer's money bubbling up later. Some did not understand this dynamic. "
He said that the increase in wholesale prices and the increase in winter costs could bring down to 1
- Energy price limit will come into force
- Would you trust an automatic switching site for life?
A few years ago, there were only about a dozen and some suppliers they are low-cut offering offers that take on top of the "best buy" lists on the price comparison websites.
Ms Fraser said that energy was a complex market, serving complex customers with different rates : Some companies had tried to grow rapidly, hiring thousands of customers, but
Julie Palmer, the recovery specialists of the Begbies Traynor companies, said that there was a sharp increase in public service companies in "significant" financial difficulties ".  "We could expect more competitors to go to the wall in 2019," he said. Even Energy Minister Claire Perry would have said the same in a recent conference.
Earlier this week, Mary Starks, of Ofgem, told the BBC that there were "room for improvement" in the licensing regime, so businesses were right
How did the new price cap influence things?
Typically, the cap – introduced on January 1 – means that the typical use of a dual fuel customer who pays by direct debit will not cost more than £ 1,137 in the year.
However, this only applies to pre-defined rates (also called standard variable rates), so it is designed to protect those who have remained on the same deal for years, rather than those who have made purchases around  search through automatic switching service Look After My Bills suggests that there are 66 more expensive rates than cap. They are mostly fixed business, so they are not subject to cap.
"The price cap was a welcome step to protect consumers on extended standard rates," said Lily Green, head of research.
"Fixed agreements are often seen as the safe way to get a good price, but blocking people in a fixed business more expensive than the cap, with a heavy exit cost is a rather shameless move by suppliers.  "With the complexity of tariffs and major changes in the industry, it is becoming increasingly difficult to know that you are making the right choice as a consumer."
This complexity will continue if, as expected, Ofgem will raise the default tariff limit in England , Scotland and Wales in April Northern Ireland has its own regulator and price limit
Andrew Long, founder of another automatic switching site – Switchcraft – claimed that the roof had already determined a bundling of prices  The difference between the cheapest and most expensive fares had dropped from around £ 300 per year to less than £ 200, he said.
Some say this is an argument against the maximum price, as it could reduce price competition, to the detriment of active customers.  What will happen next?
Automatic switching sites will probably become more popular, but they should also attract the regulator's attention.
These services automatically move customers to the best option when their fixed contract expires, but this is judged on price rather than customer service.
At a time when suppliers are failing, homeowners are urged to consider customer service scores when they choose the gas and electricity supplier.
Organizations such as Citizens Advice rank supplier on criteria such as switching and billing.