Power Systems 101

Foundational concepts that underpin a working knowledge of conventional, transforming and future power systems.

Demand-side

The location where most Customers are connected to the Power System.  This traditional term is, however, becoming increasingly inadequate.  This is because what was once

Direct Current (DC)

Direct systems involve the flow of an electric charge in a single direction.  It is produced by sources of Power such as Battery Energy Storage

Dispatchable

A particular Energy Resource is considered Dispatchable if its function can be relied upon to ‘follow a target’ issued by the Market/System Operator (MSO), Distribution

Distribution Market Operator (DMO)

Distinct from the role of managing a Network Services Market (normally the role of the Distribution System Operator), the DMO is the entity responsible for

Distribution Network

A network that transports Electricity from the Bulk Supply Point (BSP) to the Connection Point for each Customer.  Distribution Networks typically operate at Medium Voltage

Distribution System Operator (DSO)

A future-oriented set of capabilities required in a high-CER/DER Power System where distribution-connected resources provide a growing proportion of Energy, Power, System Flexibility and other

Electricity

A form of Energy and set of physical phenomena that result from the existence and flow of charged electrons.

Embedded Network

A localised electricity network that is connected to the wider Power System via a parent Connection Point, and which is owned, controlled or operated by

Energy

Electrical Energy is the product of electrical Power and time.  It represents the ability to perform a volume of work in a duration of time

Energy Retailer

An entity that trades wholesale and other Energy services as the basis for selling Energy service offerings to retail Customers.