Gas

AQ: Annual Quantity 

Bar: The unit of pressure that is approximately equal to 1 atmosphere. 

BOM: Balance of Month 

Calorific Value: The ratio of energy to volume measured in Mega Joules per Cubic Metre 

CCL: Climate Change Levy 

Cubic Metre: A volume, approximately equal to 35.34 cubic feet. 

DC: Data Collector 

Exit Zone: A geographical area within an LDZ which, on a peak day, receive gas from a group of offtakes. 

Firm: A supply that under normal events would not be reduced or interrupted or switched off . 

Gas Year: A 12 month period beginning on 1 st October and ending 30 th September 

Interruptible: A supply that is not Firm 

Kw: Kilowatt 

Kwh: Kilowatt Hour 

LCPD: EU Large Combustion Plant Directive, effective 1st January 2008

LDZ: Local Distribution Zone 

LNG: Liquid Natural Gas 

“M” number: Common term for gas MRPN

MO: Meter Operator 

MPRN: Meter Registration Point Number “M” number 

MWh: Megawatt Hour 

NBP: Notional Balancing Point 

NC: The Network Code 

NGC: National Grid Company 

NGT: National Grid Transco

NTS: National Transmission System 

Ofgem: Office of Gas and Electricity Markets 

P/kwh: Pence per kilowatt hour 

P/Th: Pence per Therm 

P/Therm: Pence per Therm 

SAP: System Average Price 

SMP: System Marginal Price 

Therm: A unit of energy, 1 therm = approx 29.31Kwh 

Transco: UK Gas Network Owner now merged with NGC 

UKOOA: United Kindom Offshore Operators' Association

WACOG: Weighted Average Cost of Gas 

WAP: Weighted Average Price 

WDNW: Week Day None Weekend