
Virginie
LEFÈVRE
Sirenergies editor
Table of contents
March 6, 2026
Min reading

In recent years, we have seen the emergence of new electricity suppliers on the French market, highlighting renewable energy and the advantages of using green electricity in its consumption. Isotope Energy is the first supplier to be at the heart of this low-carbon energy transition by promoting electricity from nuclear sources.
SirEnergies explains everything to you in less than 3 minutes.
The Isotope project was born from a conversation between Simon and Victor, the two founders of the company, ex-classmates at École Polytechnique and worried about the direction of energy policy in Western countries.
Isotope Energy is part of the logic of allowing French customers to upholding The nuclear industry too often criticized by the media.
The very young company, founded in June 2021, is the first company to market nuclear electricity offers to a clientele of individuals.
The guarantee of origin is a scrip associated with an installation that produced electricity. You should know that this certificate can be exchanged on the Register of guarantees of origin.
The principle is simple: for each MWh of electricity produced and injected into the network, the installations issue a guarantee of origin.
The supplier, for its part, buys two things: the guarantee of origin and the electricity. It is only the purchase of a guarantee of origin that allows him to certify the origin of the electricity produced.
Isotope Energy benefits from ARENH (Regulated Access to Historic Nuclear Electricity) for its electricity supply. Thus, to cover the consumption of its customers linked to its 100% nuclear guaranteed electricity supply, the company uses the system of guarantees of nuclear origin.
Do not hesitate to read our detailed article on ARENH, a mechanism at the heart of the electricity market to find out more.
At the beginning of 2022, Isotope Energy will market a 100% nuclear guaranteed electricity supply offer. We talked about it a bit above, this offer is, for the time being, only intended for individuals.
At the time of writing, the company has set up pre-registration on its website with two options:
The launch of this offer is scheduled for the end of 2021.
To subscribe to an Isotope Energy energy contract, several solutions are available to you:
12 Place Dauphine
75001 Paris
These same possibilities will be proposed for terminate your contract and via your Isotope Energy customer area.
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At the time of writing, Isotope Energy does not list the opinions and remarks of its customers on its website for the simple reason that the company is starting to market its offers only from the end of 2021.
