Tips and news to better understand the daily energy challenges

The electricity bill of a French household is not just about the price of the kilowatt-hour. From 2016 to 2026, the subscription to the Tarif Bleu has increased much faster than the kWh itself, with a rise of about 115% on the subscription over ten years, compared to around 33% on the price of energy alone. Understanding this mechanism changes the way one analyzes their expenses and chooses their contract.

Electricity pricing structure: what the kWh price doesn’t tell you

We observe a recurring bias in reading bills: the focus on the unit price of the kWh masks the evolution of other components. The subscription, the transportation tariff (TURPE), and the electricity tax collectively weigh as much, if not more, than the gross consumption for small residential profiles.

After the peak of the regulated tariff in early 2024, around 0.2516 €/kWh including tax, the revisions for 2025-2026 granted a decrease of about 10 to 15% on the kWh for the TRV. This relief has been partially neutralized by the rise in taxation and the gradual end of the price shield. As a result, the annual bill of a typical household on the Tarif Bleu has increased by about 44% between 2016 and September 2026.

The distinction between fixed and variable parts determines the relevance of a change in offer. A household with modest annual consumption (non-electric heating, small housing) is proportionally more affected by the increase in the subscription than a high-consumption household. Before comparing suppliers based solely on the kWh price, we recommend relating the total annual cost, subscription included, to the actual consumption observed over the past twelve months.

Specialized resources like Le Mag Energie allow you to track these pricing and regulatory developments over the months, beyond just the suppliers’ press releases.

Natural gas in France: market price and repercussions on households

Natural gas is no longer the cheap energy it once was for residential heating. The end of the regulated gas sales tariff, effective since mid-2023, has transferred the entire market risk to consumers through indexed or fixed-price offers.

The government has also reduced the advantage of gas compared to electricity within the framework of the DPE. This regulatory decision has a direct impact on the valuation of homes heated by gas, whose energy class can deteriorate without any physical change occurring in the building.

In practical terms, a home rated D due to a favorable gas coefficient can shift to E after recalculation. The new DPE penalizes fossil fuels more severely, which alters the asset management decisions for landlords subject to deadlines for banning rentals of energy-inefficient properties.

Total cost of gas heating: beyond the kWh price

The gas/electricity comparison is not limited to the energy tariff. We systematically include:

• The mandatory annual maintenance cost of the boiler, which represents a fixed charge absent from electric systems like air-to-air heat pumps
• The predictable evolution of the tax on natural gas, whose upward trajectory follows French climate commitments
• The remaining lifespan of the equipment, as replacing a gas boiler with a heat pump involves an investment whose amortization depends on the differential of actual operational costs

Mandatory programmable thermostat: regulatory constraint and measurable gain

Starting January 1, 2027, every home equipped with individual heating must have a programmable thermostat. This obligation, stemming from the BACS (Building Automation and Control Systems) decree transposed into French law, applies to both owner-occupiers and landlords.

The stated goal is a significant reduction in heating consumption through simple scheduling of time slots. Switching from a non-programmable mechanical thermostat to a connected programmable model allows for the elimination of unnecessary heating during absence hours and at night, without manual intervention.

Choosing a thermostat: technical criteria to check

Not all programmable thermostats are created equal. We recommend checking three points before purchase:

• Compatibility with the existing heating system (pilot wire for electric radiators, dry contact for gas boilers, OpenTherm protocol for modulation)
• The granularity of programming: a device offering 30-minute time slots per day of the week provides much finer control than a model limited to two day/night modes
• The NF PACT certification or equivalent, which guarantees regulation accuracy within 0.5 °C and compliance with the decree’s requirements

Connected models add absence detection through geolocation and learning of habits, but their additional cost is only justified if the home has irregular occupancy schedules.

Electricity market and flexibility: what changes for the consumer

The rise of intermittent renewable energies (solar, wind) in the French electricity mix is transforming the pricing logic. Dynamic pricing offers, indexed to the spot price of the wholesale market, are multiplying. They promise savings on days of high renewable production but expose the consumer to price spikes during winter peaks.

Consumption flexibility is becoming a real economic lever. Shifting the operation of the water heater, washing machine, or charging an electric vehicle to dynamic off-peak hours can significantly reduce the annual bill, provided one has a communicating meter and a compatible energy manager.

The French electrical network, historically designed for stable nuclear production, must absorb an increasing share of decentralized production. Capacity and demand response mechanisms, long reserved for industrial users, are gradually opening up to individuals through aggregators. This evolution remains little visible in consumer offers, but it redefines the relationship between consumption, local production, and the national grid.

Residential energy choices are becoming more complex. Comparing two offers now requires cross-referencing hourly consumption profiles, the fixed part, applicable taxes, and price risk tolerance. A spreadsheet is better than an online comparator that would only consider the average kWh price.