DSM (Demand Side Management) sometimes referred to DSR (Demand Side Response)
Demand Side Management involves users of electricity having the capability to change their usage from their normal or current consumption patterns. It can provide significant benefits for customers in terms of reduced bills and gives them greater control over the energy they use and produce.
It can help EirGrid in managing the power system efficiently; including accommodating increased renewable electricity generation and providing enhanced capacity. Demand Side Management has been and is expected to remain a key operational service to maintain system security for the island and we support the development of a smart grid where Demand Side Management is an important element.
Reference - Demand Side Management (eirgridgroup.com)
DSR is delivered through either an AGU (Aggregated Generation Unit) or DSU (Demand Side Unit) Aggregator dispatching the consumers IDS (Individual Demand Site) depending on the IDS capability which will be determined by their electricity connection agreement.
What is the difference between the iPower AGU & DSU?
An AGU is a collection of large standby generators with export capacity which are either owned by iPower or the electricity consumer and are located at a wide range of commercial/industrial electricity consumers sites including schools, hospitals, offices, supermarkets, manufacturing etc. This collection of generators is operated in aggregate so as to behave as one large single generation unit exporting electricity onto the electricity system.
A DSU is a collection of commercial/industrial electricity consumers IDS's including schools, hospitals, offices, supermarkets, manufacturing etc. which can reduce demand on the electricity system either through load shedding or by utilising standby generators which are either owned by iPower or the electricity consumer. This collection of generators is operated in aggregate so as to behave as one large single unit reducing demand on the electricity system.
iPower make both the AGU and DSU available for the purposes of dispatch by the Transmission System Operator (TSO), SONI (System Operator for Northern Ireland) and EirGrid (System Operator for Ireland). The TSO is responsible for “keeping the lights on”. From a TSO perspective an AGU or DSU is just another power station at its disposal for dispatch, the same as conventional power stations.
iPower remotely controls and monitors these generators through Imperium, our in-house designed monitoring and control system which utilises IOT technology. Imperium encompasses control room software and SCADA systems connected to a Porta at each generator via the GSM network.