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PFP Jargon Explainer

What letter does the jargon begin with:

Annual Quantity

The annual quantity of gas consumed. This is an Industry terms used to indicate the average annual consumption for each property. This value is recalculated every time we get an up to date reading.

Automatic Meter Reader (AMR)

An AMR is a device that is built into a meter or attached to a meter externally. The purpose of an AMR is to obtain meter read data and submit this electronically to your supplier. This ensures a supplier can bill you accurately for your usage. An AMR device is ideal for non-domestic meters where there is no current Smart Meter option for meters of higher capacity.


British Thermal units, the amount of therms a piece of equipment would use in a specified time. This is used to work out daily, weekly and annual consumption and is used to work out an estimated Annual Quantity for a customer installing new equipment.

Calorific Value (CV)

This is a measure of the energy contained in gas. It represents the amount of heat released as the gas is burned.

Carbon footprint

The amount of carbon dioxide released into the atmosphere as a result of the activities of a particular individual, organization, or community


Climate Change Levy. This is a Levy (tax) introduced by the Government on 1st April 2001 on the use of energy in industry, commerce and the public sector.


Change of Measurement Class.

Consolidated Bill

This is a series of bills that have been consolidated into one singular statement/bill. This can range over a large period of time. The main cause of this is related to either incorrect reads being submitted or no reads being submitted and we have to estimate usage. The alteration of previous bills due to reads being incorrect means we have to consolidate previous bills and this process cannot be reversed.


Change of supplier.


Change of Tenancy.

Data Flows

Data flows are used for suppliers and industry to communicate with each other. Each code has a different meaning or instruction associated with it and suppliers rely on these to action certain items such as disputed reads.

DD Discount

Direct Debit Discount – The discount received for having a direct debit in place.

DDA (Direct Debit Adequacy)

This is a term used for reviews that we do on customers’ Direct Debits. This is done at least once every 12 months, however, can be requested at any time by our customers. We do a review to ensure you are paying the correct amount monthly in order to cover your usage, and to ensure you are not paying either too little or too much.

Deemed Read

A meter read estimated by the Data Collector.

Distribution Network

The network that carries lower voltage electricity (that’s been converted from the high voltage transmission network) to industrial, commercial and domestic consumers.


Distribution Network Operator. A company that owns & maintains a network for transporting electricity.


This is a disputed read. This is the term given to a read that the customer disputes. This can only be done with first and final readings and can be raised with either the old or new suppliers. This can take 4 weeks to resolve due to the communication between suppliers. Should the disputed read fall within tolerances it could be rejected. Please note that should there be an issue with any other read, these can be changed following a different process and you may be asked to provide photo evidence of the read.

Draft Bill

This a bill that hasn’t been able to be sent to you for mainly two reasons a.) High value bill or b.) Low value bill This can be caused by incorrect meter reads being submitted. If one bill is stuck in draft it prevents all other bills being released until the issue is resolved

DUoS (Distribution Use of Systems)

The RECs receive a market average of 20% of the electricity cost for distribution and this cost is paid irrespective of whether they are responsible for supply.


Estimated Annual Consumption. An estimate of your forecast annual consumption provided by your data collector, based on historical meter reads. This value is recalculated every time we get an up to date reading.

Erroneous Transfers (ET’s)

This is a process that is undertaken when a site is registered to a new supplier incorrectly.

Estimated Read

Where a supplier has estimated the electricity read based upon previous consumption.


This is an erroneous transfer and relates to customers moving over to a new supplier in error. This most commonly occurs where incorrect addresses are used at signup. This can take up to 6 weeks to be resolved from notification being received.


Feed-in tariff – The government's financial incentive to encourage microgeneration of electricity. A feed-in tariff was introduced in the UK on 1 April 2010.

Fixed Product

A fixed product is a contract where you fix your costs for the length of the contract term.

Fixed Tariff v Variable Tariff

A fixed Tariff refers to the unit rate and standing charge being fixed over a one year period. In this period the Direct Debit amount can still change as it depends on how much the customer uses. If a customer leaves within this period, before the renewal period, exit fees will apply. A variable tariff is one where the standing charge and unit rate are always subject to change. This will be communicated within a 30 day window period should changes occur. Should a customer leave this tariff at any point, no exit fees apply.


Gigawatt. One billion watts. One million kilowatts. One thousand megawatts.


The Gas and Electricity industries are independent of each other. The main role of these bodies is to collect meter details and to ensure that the reads received are correct. They mostly work in the background of suppliers and don’t have customer contact.


Kilowatt – A measure of power, 1kW = 1000 watts.


Kilowatt-hour – Kilowatts used per hour.

Maximum Demand

The measure of the highest peak of electricity flow, into the site during a half-hour period, in the period of a month.


This stands for Mobile Meter Reading.


Meter Operator – the company that goes to a site, fits meters and provides on-going meter maintenance. A MOP contract is a legal requirement for all half-hourly supplied meters. The contract can be done through your supplier or direct with your chosen MOP.

MPAN (Metering Point Administration Number)

Metering Point Administration Number – Also known in the industry as ‘S number’ or ‘Supply number’, this identifies a unique electricity supply point. Your MPAN can be found on your electricity bill.

MPRN (Meter Point Reference Number)

This is your unique gas Meter Point Reference Number, and is used to identify your gas supply. Your MPRN is on your gas bill, not on the meter itself.


Meter Serial Number. A number given to identify an actual meter.


Meter Time Switch Code – This indicates how many registers (set of meter reads or dials) your electricity meter has, and what times they operate throughout the day.

National Grid

The National Grid owns the main transmission systems and is responsible for transmitting the electricity from the generator to the local RECs area. It is paid a market average of 6% for this service. All electricity generated in mainland UK is put into the National Grid before being split into the various REC areas.

Negative Consumption

This occurs when the meter read submitted is lower than the previous months meter read, showing a negative consumption.

New Version Bill

A new version of a bill issued has been created in order to correct an error such as an incorrect reading.


Profile Class – Used where half-hourly metering isn’t installed, the Profile Class provides the electricity supplier with an expectation about how electricity will be consumed throughout the day.

PV (photovoltaics) – solar

The word used to describe the conversion of light energy into electricity using semiconducting materials.


Smart Metering Installation Code of Practice, specifies the minimum standards for PFP Energy to follow in relation to the Customer Facing aspects of the installation of Smart Metering Systems. The aim of this Code is for the customer experience of the installation process to be positive, to protect the customer during the process, for customers to be given appropriate assurances over what will take place during the installation process, and to deliver programme benefits, including long term behavioural changes.


Our Smart Meter partners - Smart Metering Systems


Supply Start Date.


Seasonal Time of Day –A supply tariff applying to electricity supplied at different unit rates according to the time of day and season.


This is a tariff comparison rate. It takes all prices available across all suppliers and lets you know what the average unit rate and standing charge is for this period.


The gas and electricity industry have their own tolerance levels when it comes to meter readings and the validation of them. If your readings fall into the following parameters, then the read will be accepted and validated at industry. Electric – 250kWh (Example if a customer submits a read of 5000kwh and then correct this read to 5200, the first will remain as the second read is within the tolerance level. ) Gas- 109m3 or 39ft3


Third party intermediaries (TPIs) are organisations or individuals that give energy related advice, aimed at helping you to buy energy and/or manage your energy needs.

Tracker Product

A variable product, in which you initial agreed rates could go up or down depending on the wider market.

Transposed Reads

This is the term used when customers who have 2 rate meters (Night and Day) and accidentally submit the readings the wrong way round. This can cause long term issues with billing if it is not addressed. If you ever have any doubt on which is which- we are happy to help.


The National Grid takes readings of maximum demands three times a year. The average of the three readings is used by the National Grid to calculate the transmission charges.

TUoS (Transmission Use of Systems)

An average of 6% of the electricity cost is paid to the National Grid to transmit the electricity from the generator to the local suppliers’ area.

Wholesale prices

The price suppliers pay for energy. This makes up a proportion of what consumers pay, since suppliers also need to accommodate for distribution and operational costs.