Method of revenue recognition based on delivery instead of sale.
Delta (or delta t)
A difference in temperature. Often used in the context of the difference between the design indoor temperature and the outdoor temperature.
Delta connection
Electrical circuit where the three windings of a transformer or generator are connected end to end.
Demagnetize
To deprive of magnetic properties.
Demand
The rate at which electricity is delivered to or by a system, part of a system, or piece of equipment expressed in kilowatts, kilovoltamperes, or other suitable unit, at a given instant or averaged over a specified period of time.
Demand billing
The electric capacity requirement for which a large user pays. It may be based on the customer's peak demand during the contract year, on a previous maximum or on an agreed minimum. Measured in kilowatts.
Demand charge
A charge for the maximum rate at which energy is used during peak hours of a billing period. That part of a utility service charged for on the basis of the possible demand as distinguished from the energy actually consumed.
Demand factor
The ratio of the maximum demand on an electricity generating and distribution system to the total connected load on the system; usually expressed as a percentage.
Demand loan
Loan with no established maturity period, which is callable on the demand of the lender, for repayment. The interest is calculated on a daily basis and paid periodically.
Demand water heater
A type of water heater that has no storage tank thus eliminating storage tank standby losses. Cold water travels through a pipe into the unit, and either a gas burner or an electric element heats the water only when needed.
