Britain’s energy regulator is considering a financial mechanism that requires suppliers winning customers through cheaper tariffs to compensate competitors when wholesale energy prices fall sharply. Ofgem published a formal consultation on October 16, 2026, proposing to restore the market stabilisation charge (MSC). This step aims to reduce the risk of supplier failures amid volatile energy markets and mounting winter costs for households.
The proposed mechanism triggers when wholesale prices fall by more than 10%. Suppliers attracting customers with cheaper deals must then compensate rival companies for 85% of the decline in wholesale rates, according to Ofgem’s proposal. The regulator previously activated the market stabilisation charge between April 2022 and March 2024. During that period, Russia’s invasion of Ukraine triggered a severe surge in wholesale energy prices that contributed to the collapse of more than 30 energy companies.
Protecting Against Volatility and Geopolitical Tensions
Neil Kenward, interim director general of markets at Ofgem, stated that the regulator is preparing for a difficult winter for many households. While acknowledging that the energy market is stronger than it was during the recent energy crisis, Kenward emphasized that market volatility remains a core concern, driven in part by international conflicts and tensions in the Middle East.
“When wholesale prices fall sharply, suppliers that have bought energy in advance for customers on default tariffs can face losses if large numbers of customers switch to cheaper fixed deals,” Ofgem explained in its consultation documents. “The MSC supports responsible energy purchasing and helps reduce the risk of instability in the market during periods of significant price volatility.”
Ofgem maintained that reactivating the MSC would not automatically create charges or directly increase customer bills. Instead, the consultation seeks feedback from industry stakeholders on how the mechanism should operate, including exact trigger levels, notice periods, and deactivation arrangements.
Consumer Advocates Raise Competition Concerns
The proposal has drawn criticism from consumer advocacy groups and energy experts. Martin Lewis, founder of consumer advice site MoneySavingExpert, argued that the mechanism acts as a switching penalty that ultimately harms consumers by stifling genuine competition in the retail energy sector.
“The new supplier can’t pass a chunk of the saving from lower wholesale rates on to you, because it has to hand much of it to your old supplier,” Lewis noted. He added that cheap fixed tariffs and switcher deals offered to the public would likely become more expensive to protect corporate profit margins. He also questioned whether the market currently faces the same systemic domino risks seen in the early 2020s.
Broader Household Energy Pressures
The consultation arrives as British households face elevated energy charges heading into the winter months. Approximately 22 million homes currently pay the equivalent of £1,723 a year for typical gas and electricity usage under the government’s price cap for October to December, up from £1,663 during the previous quarter.
Independent energy consultants at Cornwall Insight have forecast that Ofgem’s quarterly price cap could climb by an additional £149 a year in January, pushing the average annual bill to £1,872. As the regulatory debate continues, policymakers face mounting pressure to balance the structural financial resilience of energy suppliers against the immediate cost-of-living challenges confronting domestic consumers.
Frequently Asked Questions
What is the market stabilisation charge proposed by Ofgem?
The market stabilisation charge (MSC) is a regulatory mechanism designed to force energy suppliers that win customers through lower-cost deals to financially compensate rival firms when wholesale energy prices drop significantly.
When does the proposed MSC trigger?
Under Ofgem’s consultation proposal, the mechanism triggers when wholesale energy prices fall by more than 10%. Winning suppliers must then compensate rivals for 85% of the drop in wholesale rates.
Why is Ofgem considering bringing back the charge?
Ofgem aims to prevent supplier insolvencies and market instability caused by sharp wholesale price swings and geopolitical tensions, drawing lessons from the collapse of over 30 energy firms between 2022 and 2024.
How do consumer advocates view the proposal?
Critics, including consumer champion Martin Lewis, argue that the charge acts as a switching penalty that dampens competition, discourages competitive pricing, and keeps consumer bills higher.
Does the MSC automatically increase customer bills?
Ofgem states that reactivating the MSC does not automatically create direct charges or immediately raise customer bills, though critics contend it limits access to cheaper market tariffs.
