D Return(s) 

 

'D' Returns (D1 & D2) are forms issued on behalf of a Liquidator (Official Receiver) reporting on the Conduct of Directors (The Insolvent Companies (Reports on Conduct of Directors) (Amendment) Rules 2001). Disclaimer: This administrative process can form part of the disqualification of director(s). 

 

Dark Spread

 

Definition: The gross margin derived from a coal-fired plant in generating a unit

of electricity from the acquisition of the coal from the market requiring this unit

of electricity.

 

Data Collector (DC)

 

Definition: The organization responsible for collecting, processing, and validating the meter reading data, who then passes the information to the data aggregator.

 

Data Aggregator (DA)

 

Definition: The organization appointed for aggregating the meter reading data received from the data collectors and forwarded to the suppliers.

 

Datalogger

 

Definition: Device fitted to a meter that can record, store, and transmit readings

and measurements.

 

Day-ahead Market (DA)

 

Definition: A traded market for the delivery to be the following day.

 

Day-ahead Schedule

 

Definition: A schedule prepared by a Scheduling Coordinator or the Independent System Operator before the beginning of a trading day. This schedule indicates the levels of generation and demand scheduled for each settlement period that trading day.

 

Debenture 

 

Definition: A debenture is an instrument used by a lender (e.g. a bank) providing capital to the borrower (i.e. companies). It enables the lender to secure loan repayments against assets - even if they default on the payment. A fixed charge

is usually taken out against a tangible asset such as property. 

 

Deflation

 

Definition: A persistent decrease in the level of consumer prices or a persistent increase in the purchasing power of money. The rate at which this decrease occurs 

is expressed as a percentage over a period of time, usually a year.

 

 

Degree Day

 

Definition: A measure of the variation of one day’s temperature against a standard reference temperature, typically 65 Fahrenheit/18 Celsius. Degree days are used as

a basis for temperature-related weather derivative deals.

 

Delivery Capacity

 

Definition: The maximum rate at which a natural gas buyer can request the seller

to deliver gas into the pipeline and which the seller has a firm obligation to deliver.

 

Delivery Only Providers

 

Definition: Owners and operators of transmission and distribution system equipment that provide billing and related energy services for the transmission and delivery of electricity.

 

Delivery Month

 

Definition: The month in which a futures contract matures and can be settled by physical delivery. Also known as the contract month.

 

Demand

 

Definition: The rate at which energy is delivered to loads and scheduling points by generation, transmission, and distribution facilities.

 

Demand (Electric)

 

Definition: The rate at which electric energy is delivered to or by a system, part of a system, or piece of equipment, at a given instant or averaged over any designated period of time.

 

Demand Bid

 

Definition: A bid into the power exchange indicating a quantity of energy or an ancillary service that an eligible customer is willing to purchase and, if relevant, the maximum price that the customer is willing to pay.

 

Demand-side Management

 

Definition: Action by consumers of energy to control and alter their usage, typically in response to energy price signals or electrical spikes. It is usually done through a third-party organization with qualified in-house expertise and systems.

 

Derivative

 

Definition: A financial instrument derived from a cash market, futures contract, or other financial instruments. Derivatives can be traded on regulated exchange markets or over-the-counter.

 

Displacement

 

Definition: Where natural gas is input into a pipeline system at one end and the same volume is removed from the other.

 

Distribution Network Operator (DNO)

 

Definition: Manages the installation and upkeep of their cabling and the distribution of electricity from the point where it leaves the transmission system

to the supply point. They are also often referred to as the host Regional Electricity Company (REC).

 

DRO

 

An abbreviation for Debt Relief Order (DRO). A client may enter into this form of insolvency to deal with their unsecured debts.

 

Downstream

 

Definition: Activities in the oil and natural gas industry from a refinery onwards – e.g. the distribution and marketing of hydrocarbon products.