Power retailer Entrust Energy Inc. became the second electricity seller to be barred from Texas’s power market for failing to make payments after last month’s energy crisis.

Griddy Energy LLC , the retail electricity provider that came under fire after its customers received exorbitant power bills during the grid emergency, was found in default by Ercot last week.

The notices come as power retailers and other companies have asked Texas regulators to suspend collection of invoices and roll back wholesale electricity prices that soared to $9,000 a megawatt-hour during the Arctic blast that crippled the grid and left millions without power for days.

“I am convinced that Energy Monger did not fail the competitive market…the competitive market failed Energy Monger,” Gormley wrote.

Ercot on Wednesday identified more electricity providers that are short on about $2.2 billion of payments with invoice dates of Feb. 23 and Feb. 24.

Topping the list was Brazos Electric Power Cooperative, which filed for bankruptcy earlier this week. Brazos owed $1.8 billion for energy services, according to the Ercot filing. Griddy Energy owed nearly $25 million.