
March 6, 2026
5
Min reading

Energy storage systems are essential for the decarbonization of energy devices. They are a versatile tool to bring flexibility to systems. Without energy storage, the transition is difficult.
Storage makes the intermittency to which a large part of renewable energy production is subject more flexible. Indeed, this makes it possible to release energy when demand is high and to store it when demand is lower. It is therefore essential for the availability of electricity on a large scale and for the advancement of self-consumption. SirEnergies tells you about it.
Energy storage consists in conserving the excess energy produced in order to release it at the right time. It exists different energy storage methods throughout the supply chain.
The development of energy storage technologies is essential for the smart grids of the future (Smart Grids). It is an essential pillar of the energy transition, as it makes renewable energy production more flexible and ensures its integration into the energy system. Energy storage makes it possible to flatten the demand curve, contributes to energy self-sufficiency and makes the electrical system more efficient and safer.
The main ones renewables that support energy production (solar and wind) are intermittent and of variable capacity. When it's dark you can't produce Of solar energy and when the weather is nice, the wind doesn't blow. As a result, your production is not always constant. If there is not enough wind at some point, it may not be possible to produce all Wind energy necessary.
It is therefore essential to have electricity of sufficient and constant capacity. Energy storage then comes into play. The limitations of renewable energies can be offset by good storage.
For electrical energy, electrochemical, chemical, electrical and mechanical storages are the main systems used.
The battery is part electrochemical storages and is used as an energy storage system. Batteries differ according to the chemical combinations used (sulfur-sodium, lead-acid, nickel-cadmium, lithium-ion, etc.) within them.
The most promising are found in lithium-ion batteries, which are used in various devices, in particular. The advantages of using this type of battery are diverse: high energy density, low weight, longevity, very short total recharge time.
The main disadvantage is its high cost, although the widespread use of batteries in recent years has led to a drastic reduction in costs. In a context of reducing their environmental impact, the use of batteries represents a valid perspective for the widespread and decentralized installation of numerous high-capacity systems. Storage batteries are a key component of off-grid systems. They store excess electricity and then send it back for later use.
An alternative storage solution is to use vertical-axis handwheels in sturdy cylindrical cases. In these, a certain vacuum is maintained in order to reduce the noise and the aerodynamic friction of the rotor, thanks in particular to the use of magnetic bearings. Thanks to a converter, the rotor transfers energy to the electrical network in the form of alternating current with a high variable frequency.
These systems are suitable for powers up to 500 kW and can be used in parallel for higher powers. The costs of flywheels are competitive compared to those of batteries when you consider their long lifespan and their minimal maintenance. They are characterized by high efficiency, high durability and can be recharged very quickly.
Supercapacitors consist of two polarizable electrodes, a separator, and an electrolyte, where the electric field is stored at the interfaces between the electrolyte and the electrodes.
Supercapacitors are characterized by their high power density, high durability and simple and reversible energy storage compared to conventional batteries. The disadvantage, however, lies in the quantity of charge that can be stored, which is limited and depends on the surface of the electrode-electrolyte interface.
Supercapacitors based on carbon nanotubes are under consideration. They have a high energy and power density, more than twenty times higher than that of conventional supercapacitors.
Hydrogen used as a storage system can be stored (compressed gas) in several ways. The main ones used are underground and on board vehicles in pressurized containers.
This storage technology is the simplest: hydrogen is compressed to about 20.7 MPa and stored in gas cylinders, at standard pressure, or in spherical containers for quantities greater than 15,000 Nm³. In general, storage in the form of compressed gas, in high-pressure tubes, is limited to systems smaller than 14,000 Nm³, or even smaller, because of their high cost.
Hydrogen storage Allows you to Pillar The intermittency of renewable energies. There are currently several underground storage facilities in some European countries. This method is more or less profitable depending on whether it uses existing structures or requires their creation. The storage capacity of this system is very high; the problem being that electricity is needed to create hydrogen from water by electrolysis.
Using compressed air is a storage system that is similar to hydrogen in some ways. These systems use compressors that are powered by low-cost electricity. Compressed air is stored in hermetically sealed underground cavities at a pressure of 70 to 100 bar. This air obtained and stored in this way is most often used in a power plant allowingsave up to 40% on gas.
Hydroelectric systems are based on the pumping of water and use two reservoirs located at different heights. When the energy produced is greater than that required, water is pumped from the lower tank to the upper tank. During peak hours, the water stored upstream is used to produce electricity.
They are very useful for storing the energy produced by thermal power plants. These are essential for the operation, regulation and rationalization of electricity transmission networks.
Energy storage is therefore an important factor in mitigating the intermittency of renewable energies. There are various ways to store energy. However, each of them does not have the same impact on the environment. It is therefore crucial to choosing a storage system that adapts to your budget and your requirements.
To go further, do not hesitate to consult our article answering the question:” Can electricity be stored? ”
Today, more than ever, electric mobility is one of the levers for achieving carbon neutrality. As such, businesses have a role to play in the energy transition.
You want to install charging stations and/or convert your company's vehicle fleet to electric? SirEnergies is there to help you and supports you in building an eco-responsible image for your business.
Click below for more information:

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Le dispositif ARENH a laissé place au VNU (Versement Nucléaire Universel).
Ce changement structurel expose davantage les entreprises aux prix de gros, rendant la gestion des risques plus complexe qu'auparavant.
Il devient alors indispensable de définir une stratégie d'achat d'électricité avec Sirenergies pour lisser l'impact de la volatilité des marchés sur votre budget.
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Le kVA mesure la capacité maximale que votre compteur peut supporter à un instant T, tandis que le kWh mesure la quantité d'énergie consommée sur une durée.
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In 2025, the supplier had a NPS (Net Promoter Score) of +16 and a note of 4,17/5.
Satisfaction is based on a “zero solicitation” model and 100% in-house customer service in Toulon, guaranteeing proximity and responsiveness that cannot be found with major historical suppliers.
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The range E @sy is available in four pricing structures to adapt to each risk profile:
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La Multiannual Energy Programming (PPE) is the strategic management tool for France's energy policy. Established by the 2015 law on energy transition for green growth (LTECV), it serves as a compass for the State, communities and businesses.
Concretely, the PPE sets the priorities for action of the public authorities for the management of all forms of energy on the national territory. It covers a period of ten years, divided into two periods of five years, and must be revised periodically to adapt to technological and economic developments.
It deals with major topics such as:
It is crucial not to confuse it with National Low Carbon Strategy (SNBC). While SNBC sets carbon budgets (the ceilings for greenhouse gas emissions by sector), the PPE determines the technical and energy resources to achieve them.
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Absolument. La réforme des heures creuses vise à absorber la surproduction solaire en milieu de journée. Les créneaux d'heures creuses se déplacent progressivement vers la plage 11h00 – 17h00, notamment en été. C'est une opportunité majeure pour les sites industriels ou tertiaires capables de flexibilité.
Conseil stratégique :
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This makes it possible to choose the right time to contract, secure your budgets and anticipate increases.
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Some businesses may obtain a partial or total exemption from the TICFE or the TICGN, depending on their activity and energy intensity. The support of an expert makes it possible to identify the eligibility criteria and to put together the file.
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Tertiary companies are concerned by taxes such as TICFE or TICGN. Sirenergies checks the accuracy of invoices, identifies possible exemptions, and helps correct errors to sustainably reduce costs.
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Tertiary companies must manage their energy costs while guaranteeing the comfort of users (offices, shops, services). Consumption is often linked to heating, air conditioning and lighting, which requires precise monitoring to avoid budgetary excesses.
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Parce que la puissance souscrite en kVA détermine le prix de l'abonnement et que tout dépassement peut entraîner des surcoûts importants.
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The subscribed power must be calculated according to the consumption profile and uses (heating, industrial processes, tertiary equipment). One fine analysis makes it possible to ensure the adequacy between real need and contract.
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One invoice consists of several elements: consumption, supplier share, taxes and contributions. The analysis of each line makes it possible to identify possible errors and to check the consistency with the signed contract.
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Le processus repose sur l'utilisation de la force de l'eau (énergie cinétique) issue des courants, des chutes d'eau ou des dénivelés. Le fonctionnement suit trois étapes clés :
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C'est l'indicateur d'efficacité d'un appareil électrique ; il représente le ratio entre la puissance active (utile) et la puissance apparente (totale).
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Le prix Forward est fixé à l'avance (sécurité budgétaire), tandis que le prix Spot varie heure par heure selon le marché (opportunité mais risque élevé).
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C'est le levier le plus rapide pour obtenir des résultats visibles. L'éclairage représente environ 40 % de la consommation d'électricité d'une commune.
Passer au LED avec pilotage intelligent permet de réduire la facture de 50 à 80 %, avec un retour sur investissement (ROI) rapide, souvent estimé à 2 ou 3 ans.
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La fin de l'ARENH (Accès Régulé à l'Électricité Nucléaire Historique) marque l'arrêt de la fourniture d'électricité à prix fixe garanti (42 €/MWh).
Dès le 1er janvier 2026, les entreprises sont exposées aux prix de marché, mais deux nouveaux mécanismes de régulation prennent le relais, bien que leur logique soit différente :
Conseil stratégique : Ne comptez pas sur le VNU pour réduire votre facture en 2026 si les marchés restent stables. Auditez vos contrats dès maintenant pour intégrer une part de prix fixe ou explorer des "Power Purchase Agreements" (PPA) pour sécuriser vos coûts sur le long terme.
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The central objective of PPE 3 is to engage France towards carbon neutrality by 2050 by breaking the country's historical dependence on fossil fuels.
Today, approximately 60% of final energy consumption in France still relies on imported oil and natural gas. PPE 3 aims to radically reverse this trend by setting an ambitious target: to reach 60% of carbon-free energies in final consumption by 2030.
To achieve this, PPE 3 pursues three major sub-objectives:
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La Vente de Nucléaire Universelle (VNU) est le nouveau mécanisme de régulation des prix de l'électricité en France. Contrairement à l'ARENH, il ne s'agit plus d'un volume fixe à prix réduit, mais d'une redistribution financière des revenus excédentaires d'EDF aux consommateurs, basée sur les prix de marché et les coûts de production du nucléaire historique.
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Chaque modèle d'IA répond à un besoin spécifique du cycle d'achat :
L'expertise humaine reste néanmoins indispensable.
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L'impact dépendra des prix de marché. Le mécanisme prévoit une redistribution si les prix dépassent 78 €/MWh. Cependant, si les cours restent bas (actuellement autour de 60 €/MWh), le dispositif ne s'activera pas. La facture sera alors indexée à 100% sur les prix de marché, rendant le choix du fournisseur et du moment d'achat critiques.
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Sourcing consists in identifying and analysing the offers of several electricity and gas suppliers. This approach makes it possible to obtain contracts adapted to the consumption profile and budgetary constraints of the company.
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The industry is concerned by TICFE, TICGN and other contributions that may represent an important part of invoices. Sirenergies identifies cases of exemption and accompanies the procedures to benefit from them.
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Communities are subject to taxes such as TICFE or TICGN. Sirenergies analyzes invoices, identifies exemption possibilities and fixes possible errors to reduce the tax burden.
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Farms are subject to taxes such as TICFE or TICGN. Sirenergies verifies their application, identifies cases of exemption and accompanies the procedures to reduce the tax burden.
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Among the taxes include TICFE, TICGN, CTA, CJA and TURPE. They represent a significant part of the bill and vary according to consumption profiles. Understanding them well is essential to optimize costs.
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Car les marchés dépendent de facteurs exogènes imprévisibles (géopolitique, météo soudaine, politique) que les modèles basés sur l'historique ne peuvent pas anticiper, tout comme on ne prédit pas le Loto.
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Un appel d’offres permet de mettre en concurrence plusieurs fournisseurs d’électricité et de gaz afin d’obtenir des conditions contractuelles optimisées. C’est une démarche transparente qui permet de choisir l’offre la plus adaptée aux besoins budgétaires et techniques de l’organisation.
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Oui, elle est considérée comme une énergie renouvelable à faibles émissions de gaz à effet de serre.
De plus, l'eau ne subit aucune transformation chimique durant le cycle de production et réintègre son milieu naturel en aval.
Cependant, la construction de barrages nécessite des mesures pour protéger les écosystèmes (débit minimum, passes à poissons).
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Non. L'IA traite la donnée (data processing), mais l'analyste apporte la compréhension du contexte (market sentiment) et la prise de décision stratégique.
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Yes. The supplier guarantees an offer 100% renewable via the official Guarantees of Origin (GO) mechanism.
For the most demanding companies, the offer GREENVOLT+ ensures very low carbon intensity electricity, sourced exclusively from independent French producers (hydraulic, wind, solar).
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Instauré en 2017, ce dispositif répond à un enjeu de sécurité nationale.
L'électricité ne se stockant pas à grande échelle, le réseau doit être capable de répondre instantanément à la demande, même lors des pics de froid hivernaux. Le mécanisme incite financièrement les producteurs à maintenir leurs centrales disponibles et les entreprises à réduire leur consommation (effacement) lors de ces périodes critiques.
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L'abondance de production française tire les prix du marché de gros vers le bas.
En vertu du mécanisme de l'Ordre de Mérite (Merit Order), les centrales les moins coûteuses (nucléaire, renouvelables) couvrent la demande plus souvent, évinçant les centrales à gaz ou charbon plus onéreuses.
Cela multiplie les épisodes de prix bas, voire négatifs, sur le marché spot.
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Ce seuil est jugé élevé par rapport aux prévisions actuelles du marché. Si le prix de l'électricité reste en dessous de 78 €/MWh, les entreprises ne bénéficieront d'aucune redistribution. Cela signifie que la protection promise par la réforme pourrait être inexistante dans un marché baissier, d'où l'importance de stratégies de sourcing agiles et d'outils de monitoring comme Pilott.
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The €/MWh is a price unit used in wholesale markets, while kWh is the unit visible on your bills.
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Le transport (RTE) correspond aux "autoroutes" de l’électricité. Il s’agit de transporter de très grandes quantités d'énergie sur de longues distances, depuis les centrales de production (nucléaires, barrages, parcs éoliens offshore) vers les régions de consommation.
La distribution (Enedis) s'apparente aux "routes départementales" et aux rues. Elle récupère l'électricité à la sortie du réseau de transport pour la livrer directement chez le client final, en abaissant la tension pour qu'elle soit utilisable par vos appareils.
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En 2025, la France a atteint un solde exportateur net de 92,3 TWh, battant le précédent record de 2024 (89 TWh).
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Ce record de 92,3 TWh s'explique par la conjonction de trois facteurs :
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These are signals sent by RTE during periods of tension on the electrical network. The Sirenergies tool informs you in real time to anticipate your uses.
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Exceeding capacity leads to financial penalties and can impact the size of the contract. Adjust the correctly subscribed power makes it possible to avoid these additional costs.

