It is not easy to navigate the electricity offers when the conditions for fixing the price of energy vary from one formula to another.

EDF's regulated tariffs change once or twice a year, as do indexed price offers, since they follow the same frequency by applying an indexation level defined in the contract (for example -10% on the price of kWh).

Conversely, fixed-price offers undertake to set this rate for a given period, which varies from one to three years.

But be careful, the cost of the subscription and the taxes can be modulated at the same time.

Finally, there are offers in which the evolution of the price obeys other rules.

Some are notably indexed on the energy markets.

This is called dynamic pricing offers.

The problem is that they involve a much larger fluctuation: the price of energy varies every day and every hour.

You must then be able to postpone a large part of your consumption outside peak hours, when prices are the highest, at the risk of inflating your bill.

The good comparison

Effectively comparing electricity offers is all the more complicated as, in addition to the evolution of the price of energy, you must also take into account the two other elements of your bill, namely the cost of the subscription and the taxes. And don't be fooled by the tempting advertisements that announce a 10 or 20% reduction compared to EDF's regulated tariffs. Most often, the promotion only applies to the price per kWh, which can make a real difference on the overall bill depending on the importance of these other costs ...

What advice then does the National Energy Mediator give?

Rather than relying on the monthly payments estimated by the suppliers, he recommends “comparing the fixed part (the subscription) and the variable part (consumption in kWh), using the amounts inclusive of all taxes (TTC)”.

Likewise, for the “peak hours / off-peak hours” formulas, it will be necessary to compare the two price levels per kWh according to the time slot.

And because price is not everything, also remember to check customer management services (accepted payment methods, transmission methods for self-read indexes, etc.) and the possible environmental positioning of the supplier (green or carbon offset offers ).

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