Annual Quantity (AQ): Estimated annual gas consumption of a meter, as determined by Xoserve from previous read history.

Automated Meter Reading (AMR): AMR is a unit which can be attached to a customer’s meter which will then transmit the reading from the meter at 06.00am each day. Along with the reading at 06:00am, are the readings taken every half an hour for the previous 24 hours.

Billing Period: Corona Energy invoices will always be issued for an entire month, starting at 06:00am on the 1st and finishing at 05:59am on the 1st of the following month.

British Thermal Unit (BTU): The amount of heat required to increase the temperature of one pound of water one-degree Fahrenheit. A BTU is used as a common measure of heating value for different fuels.

Calorific Value: Daily Xoserve provided figure denoting the energy value of gas in a given local distribution zone. The CV is used in calculating kWh from cubic feet of gas.

Capacity Charge (Transportation): The cost for establishing and maintaining the network of pipes to supply gas to each premises.

Commodity Charge (Transportation): The cost payable for moving gas through the pipe network to each premises.

Correction Factor: The CF is another Xoserve provided figure. Because gas is pumped at slightly differing pressures due to space, temperature and altitude the cubic feet of gas consumed is multiplied by the CF to level out these differences. The most common CF is 1.02264.

Corrector Meter: On large meters a second meter measuring gas at a slightly different rate is attached. This provides a more accurate alternative to the correction factor.

Cubic Foot: The amount of gas needed to fill a volume of one cubic foot at 14.73 pounds per square inch absolute pressure and 60 degrees Fahrenheit. One cubic foot of natural gas contains on average, 1,027 BTUs.

Daily Metered Consumer (DMC): A supply point with a high Gas consumption (typically more than 58,600,000 kWh), for which we measure the Gas consumption on a daily basis.

Datalogger: A telephone link between Xoserve and large consuming meters. An information pulse (containing a meter read) is transmitted twice a day from the meter. These reads are sent to the shipper.

Dual Billing: When two shippers are invoicing a customer for the same gas consumption, most common when gaining or losing a contract. Either resolved easily or results in Inter Shipper Dispute.

Isolation Period: When customers fail to pay their bills they enter an ‘isolation period’ in which Corona Energy are entitled to cut off their meter and gas supply.

Local Distribution Zone (LDZ): The UK mainland is broken down into 13 local LDZs. Transportation charges differ between LDZs.

Meter Asset Manager (MAM): Meter Asset Manager (MAM) owns the meter asset at the end of the pipe. Corona Energy rents the meter on behalf of the customer, and the rental is recovered through gas supply billing.

Meter Point Reference Number (MPR): The individual identity number of the physical location of a meter within a building (this number is unique to the meter location and will not change if the meter is exchanged).

Meter Serial Number (MSN): Meter identity number; the physical identity for individual meter (this number will change if the meter is exchanged).

Metric/Imperial Meters: Meters either measure gas consumption in cubic feet or cubic metres – has an impact on how we calculate kWh.

National Balancing Point (NBP): A theoretical concept created in order to allow balancing actions to maintain the level of gas in the National Transmission System.

National Grid (NG): The largest gas transporter in mainland UK. They own the four central local networks, as well as the ‘backbone’ transmission system. Scotland, South of England, Wales and the West, and the North of England are owned by separate transporters.

National Transmission System (NTS): Main pipe network used to transport gas from beach to LDZ.

Off-take: The actual consumption of an MPR based on meter reads.

Ofgem: The Office of Gas and Electricity Markets (Ofgem), is the government regulator for the electricity and downstream natural gas markets in Great Britain.

Read Factor: This dictates whether the meter is read in cubic feet, tens of cubic feet, hundreds of cubic feet, etc.

Shipper: A licensed company shipping gas through the national pipeline network.

Supplier: A licensed company with contractual agreements to supply gas to retail customers (which may itself also be a shipper or may purchase gas from another shipper) e.g. Corona Energy.

Supply Offtake Quantity (SOQ): Maximum kilowatt-hours demanded by a site in a day.

Therms: The British imperial measurement of gas (1 Therm = 29.3071 kWh).

Uniform Network Code (UNC): The UNC is the hub around which the gas industry revolves, comprising a legal and contractual framework to supply and transport gas. It has a common set of rules for all industry players which ensure that competition can be facilitated on level terms. It governs processes such as the balancing of the gas system, network planning and the allocation of network capacity.

Xoserve: Act on behalf of the transporters issuing gas transportation bills, and resolving individual portfolio queries.

Have we missed anything?

Contact our Customer Service Team on 0800 804 8589