Since January 1, 2026, a discreet but central pillar of French electricity regulation has disappeared. The ARENH (Regulated Access to Historical Nuclear Electricity) mechanism, which had controlled a portion of the price of nuclear electricity for over a decade, has been replaced by a new system called the Universal Nuclear Payment. Presented as a reform to protect against market volatility, this shift fundamentally alters how nuclear revenues are redistributed and raises numerous questions for consumers. The change is significant. Until the end of 2025, ARENH required EDF to sell a portion of its nuclear production to its competitors at a fixed price of €42 per megawatt-hour. This system, originally designed to stimulate competition, was increasingly criticized, deemed disconnected from actual production costs and detrimental to the incumbent electricity provider. With the VNU, the logic is reversed: EDF can now sell all of its electricity at the market price.
From a regulated price to a redistribution after the fact
The core of the new mechanism rests on a seemingly simple idea. When electricity market prices exceed a certain threshold, set at around €78 per megawatt-hour, a portion of the excess revenue is collected by the state. These amounts must then be redistributed to consumers as financial compensation on their bills. The system thus abandons the fixed-price quota principle in favor of a retroactive redistribution mechanism. For EDF, this change is presented as an expected rebalancing. The company regains the ability to value its nuclear fleet at levels closer to its costs and investments, without indirect subsidies benefiting alternative suppliers. These suppliers can no longer rely on discounted nuclear electricity to build their commercial offers, which alters the competitive balance of the market. For households, the situation is more complex. The National Unified Value (NUV) acts as a safety net, but a conditional one. The protection is only activated in the event of a surge in wholesale prices. Below the trigger threshold, no corrective mechanism intervenes, even if rates remain persistently high. This architecture introduces a new element of uncertainty into the final bill.
An uncertain shield for purchasing power
One of the main weaknesses of the National Unified Energy Savings (NUES) system lies in its lack of transparency. Redistribution is designed ex post, meaning that a household cannot know in advance whether it will receive a payment, when, or how much. This opacity contrasts sharply with the old system, which, while imperfect, had predictable effects. The year 2026 could even be a period without redistribution if market prices remain moderate. As long as they remain below the trigger threshold, no payment is planned. A paradoxical situation could thus arise, with bills increased by persistently high prices, without reaching the level considered excessive by the system. This phenomenon, sometimes described as a "scissors effect," exposes households to a gradual increase in their energy expenses without the promised safety net. In this context, the announced decrease in regulated tariffs on February 1, 2026, appears as a temporary relief rather than a structural guarantee. This does not prejudge the evolution of the following months, which is now closely linked to market conditions and redistribution mechanisms. The Universal Nuclear Payment thus marks a paradigm shift. It protects against sudden shocks, but leaves consumers more exposed to intermediate price increases. Faced with this new framework, one certainty remains: in the absence of visibility on future compensation, controlling consumption remains the most tangible lever for containing costs. In 2026, more than ever, electricity is becoming an area where regulation is giving way to uncertainty.
