Fournisseur d'électricité (France)Un fournisseur d'électricité est une société qui commercialise de l'énergie électrique auprès de ses clients. Il agit en tant qu'intermédiaire sur le marché de l'électricité. Le fournisseur achète l'électricité auprès d’un producteur, dont l'électricité transite par le gestionnaire de réseau de transport (RTE) puis par le réseau de distribution jusqu'au lieu de consommation final. Le consommateur règle le montant de sa facture au fournisseur de son choix.
Tennessee Valley AuthorityLa Tennessee Valley Authority (TVA) est une entreprise américaine chargée de la navigation, du contrôle des crues, de la production d'électricité et du développement économique de la vallée du Tennessee. Créée en 1933, son territoire couvre la plus grande partie du Tennessee, de grandes portions de l'Alabama et du Mississippi, et certaines régions de la Géorgie, du Kentucky, de la Caroline du Nord et de la Virginie.
Load balancing (electrical power)Load balancing, load matching, or daily peak demand reserve refers to the use of various techniques by electrical power stations to store excess electrical power during low demand periods for release as demand rises. The aim is for the power supply system to have a load factor of 1. Grid energy storage stores electricity within the transmission grid beyond the customer.
Dynamic demand (electric power)Dynamic Demand is the name of a semi-passive technology to support demand response by adjusting the load demand on an electrical power grid. It is also the name of an independent not-for-profit organization in the UK supported by a charitable grant from the Esmée Fairbairn Foundation, dedicated to promoting this technology. The concept is that by monitoring the frequency of the power grid, as well as their own controls, intermittent domestic and industrial loads switch themselves on/off at optimal moments to balance the overall grid load with generation, reducing critical power mismatches.
High-voltage transformer fire barriersHigh-voltage transformer fire barriers, also known as transformer firewalls, transformer ballistic firewalls, or transformer blast walls, are outdoor countermeasures against a fire or exposion involving a single transformer from damaging adjacent transformers. These barriers compartmentalize transformer fires and explosions involving combustible transformer oil. High-voltage transformer fire barriers are typically located in electrical substations, but may also be attached to buildings, such as valve halls or manufacturing plants with large electrical distribution systems, such as pulp and paper mills.
MicrogenerationMicrogeneration is the small-scale production of heat or electric power from a "low carbon source," as an alternative or supplement to traditional centralized grid-connected power. Microgeneration technologies include small-scale wind turbines, micro hydro, solar PV systems, microbial fuel cells, ground source heat pumps, and micro combined heat and power installations. These technologies are often combined to form a hybrid power solution that can offer superior performance and lower cost than a system based on one generator.
Pylône électriqueUn pylône électrique est un support vertical portant les conducteurs d'une ligne à haute tension. Le plus souvent métallique, il est conçu pour supporter un ou plusieurs câbles aériens et résister aux aléas météorologiques et sismiques (foudre y compris), aux vibrations des câbles et/ou du pylône, et ses fondations (fichées ou en dalle) sont adaptées au type de substrat (des sols rocheux à pulvérulents en passant par les substrats argileux éventuellement vulnérable au phénomène de retrait-gonflement des argiles).
Ancillary services (electric power)Ancillary services are the services necessary to support the transmission of electric power from generators to consumers given the obligations of control areas and transmission utilities within those control areas to maintain reliable operations of the interconnected transmission system. "Ancillary services are all services required by the transmission or distribution system operator to enable them to maintain the integrity and stability of the transmission or distribution system as well as the power quality".
Transmission congestionElectricity transmission congestion is a condition of the electrical grid that prevents the accepted or forecasted load schedules from being implemented due to the grid configuration and equipment performance limitations. In simple terms, congestion occurs when overloaded transmission lines are unable to carry additional electricity flow due to the risk of overheating and the transmission system operator (TSO) has to direct the providers to adjust their dispatch levels to accommodate the constraint or in an electricity market a power plant can produce electricity at a competitive price but cannot transmit the power to a willing buyer.
