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The following explanations are not intended as technical definitions, and are provided purely for assistance.

Click on one of the letters below to go to the relevant term in the glossary.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

2P reserves

Sum of Proved Reserves plus probable Reserves (Society of Petroleum Engineers and WorldPetroleum Congress (SPE/WPC) reserve classification standards).

bbl

Barrels of oil.

Base-load

The level of operation of a thermal generation plant required in order to meet the minimum power and heat demand in a stated period of time.

bcm

Billion normal cubic meters.

BEB-VP

The BEB Virtual Point natural gas trading market in Germany.

Biomass

Also known as biomass fuel. A term for all
combustible organic materials including straw, woodchips and wood pellets. CO2 emissions produced by the combustion of biomass are not covered under the ETS. Biomass can be used in both central power plants and local CHP plants.

Central power plant

A large power plant, typically with a net installed power capacity of over 100 MW.

CHP

Combined heat and power generation (also known as “cogeneration”).

CHP plant

A CHP plant that generates both heat and power in the same process. The heat generated may be used for industrial purposes and/or district heating.

cm

Normal cubic meter.

CO2

Carbon dioxide

CO2 Certificates

Certificates for the emission of carbon dioxide under the ETS.

Contingent resources

Contingent resources are those quantities that are estimated, on a given date, to be potentially recoverable from known (drilled) or discovered accumulations, but which are not currently considered to be commercially recoverable or for which the degree of commitment is not such that the accumulation is expected to be developed and put into production within a reasonable time frame. Contingent resources include accumulations for which there is currently no viable market, or where evaluation of the accumulation is still at an early stage. (Society of Petroleum Engineers and World Petroleum Congress (SPE/WPC) reserve classification standards).

Cushion gas

The gas required to be placed into, and remain in, a natural gas storage facility to enable the operations of the facility.

DCS

The Danish continental shelf.

District heating

The supply of heat to customers who are connected to the centralized district heating system. The district heating system relies primarily upon CHP plants or generation from waste (either from a single generator, or from multiple generators) in order to supply heat.

Downstream

The processes of refining, distribution and sale of natural gas and oil products.

Dry wells

Exploratory or appraisal wells found to be incapable of producing hydrocarbons commercially.

EEX

The European Energy Exchange.

Equity gas

Natural gas produced from a company’s own hydrocarbon sources.

ETS

The E.U. Emissions Trading Scheme, which aims to reduce emissions of carbon dioxide and combat climate change by means of a scheme that allocates CO2 Certificate allowances and enables power generators and other emitters to trade these CO2 Certificates.

Exploration and appraisal wells

Wells drilled to discover and evaluate oil or natural gas in an unproved area, to find new reserves in an area in which hydrocarbon discoveries have previously been made or to delineate a known accumulation.

Fossil fuels

Organic fuels including coal, coal products, natural gas, crude oil and other petroleum products.

Full-load

The level of operation of a thermal generation plant required in order to meet the maximum power and heat demand in a stated period of time.

Geothermal generation

Heat generation using naturally occurring geological heat sources

Green Dark Spread

The gross margin made by a coal-fired generator expressed per MWh of power generated (that is, the difference between the price of power and the cost of coal (including related freight costs) and CO2 Certificates used in the production of power).

GW

Gigawatt, a unit of power. 1 GW is equivalent to 1,000 MW and 1,000,000,000 W.

GWh

Gigawatt hour. The amount of energy generated in 1 hour with the effect of 1 GW. 288

Hydro power

Power generated by using the force of moving water.

J

Joule, a unit of energy. 1 J is equivalent to the generation or use of 1 W in 1 second.

kV

Kilovolt, a unit of voltage in a power grid. 1 kV is equivalent to 1,000 V.

kW

Kilowatt, a unit of power. 1 kW is equivalent to 1,000 W.

kWh

Kilowatt hour. The amount of energy generated in 1 hour with the effect of 1 kW.

Kyoto Protocol

The Kyoto Protocol was adopted at the Third
Session of the Conference of the Parties to The UN Framework Convention on Climate Change (“UNFCCC”) in 1997 in Kyoto, Japan. It contains legally binding commitments, in addition to those included in the UNFCCC. Country signatories to the Protocol agreed to reduce their anthropogenic emissions of the six main greenhouse gases (carbon dioxide, methane, nitrous monoxide, fluorocarbons, perfluorocarbons and sulfur hexafluoride).

Load factor

Calculated as the actual volume of power generated in the period in GWhs divided by the maximum potential generation of power given by the net installed power capacity in MW multiplied by the total number of hours in the given period.

LDC

Local gas distribution company.

Local CHP plant

A CHP plant, typically with a net installed power capacity of less than 100 MW.

mcm

Million normal cubic meters.

MJ

Megajoule, a unit of energy. 1 MJ is equivalent to 1,000,000 J.

mmbbl

Million barrels of oil, condensate and NGL.

mmboe

Million barrels of oil equivalent.

MW

Megawatt, a unit of power. 1 MW is equivalent to 1,000 kW and 1,000,000 W.

MWh

Megawatt hour. The amount of energy generated in 1 hour with the effect of 1 MW.

Natural gas

Any hydrocarbons or mixture of hydrocarbons and other gases consisting primarily of methane which at normal operating conditions are in a gaseous state.

NBP

The National Balancing Point natural gas trading market in the United Kingdom.

NCS

The Norwegian continental shelf.

Net installed power capacity

The maximum capacity at which a plant generating power is designed to operate (without heat generation), as measured at the point of entry to the transmission network (after deducting the power absorbed by plant use and the power lost in the transformers required to raise voltage to the network level).

Net installed heat capacity

The maximum capacity at which a plant generating heat is designed to operate, as measured at the point of entry to the transmission network

Net power efficiency

The energy content in the power generated by a thermal generation plant divided by the total energy content in the fuel consumed.

NGL

Natural Gas Liquids, which are processed from reservoirs along with oil.

Non-residential

Other than residential (private households),
particularly industrial and commercial customers, corporate entities, and public sector, state and municipality customers (such as public administration, transportation and educational and research and social institutions).

Nord Pool

The Norwegian-based Nordic power exchange, which facilitates the trading of power in Norway, Sweden, Finland and Denmark.

NOx

Nitrogen oxides.

Operator

The company appointed to conduct operations under an exploration, production and/or development license or concession governing an oil or natural gas license or concession area.

PDO

Plan of Development and Operation.

PJ

Petajoule, a unit of energy. 1 PJ is equivalent to 1,000 TJ and 1,000,000 GJ.

Possible reserves

Possible reserves are those unproved reserves which analysis of geological and engineering data suggests are less likely to be recoverable than probable reserves. In this context, when probabilistic methods are used, there should be at least a 10% probability that the quantities actually recovered will equal or exceed the estimate (Society of Petroleum Engineers and World Petroleum Congress (SPE/ WPC) reserve classification standards).

Power grid

Network of high, medium and low voltage lines used for the distribution of power in a defined area.

Pressure reduction stations

Mechanism to reduce variable pressure of natural gas in the distribution network, from upstream and through a transmission network before distribution to lower pressure networks.

Probable reserves

Probable reserves are those unproved reserves which analysis of geological and engineering data suggests are more likely than not to be recoverable. In this context, when probabilistic methods are used, there should be at least a 50% probability that the quantities actually recovered will equal or exceed the estimate (Society of Petroleum Engineers and World Petroleum Congress (SPE/ WPC) reserve classification standards).

Proved reserves

Proved reserves are those quantities of petroleum which, by analysis of geological and engineering data, can be estimated with reasonable certainty to be commercially recoverable, from a given date forward, from known reservoirs and under current economic conditions, operating methods, and government regulations. If deterministic methods are used, the term reasonable certainty is intended to express a high degree of confidence that the quantities will be recovered. If probabilistic methods are used, there should be at least a 90% probability that the quantities actually recovered will equal or exceed the estimate (Society of Petroleum Engineers and World Petroleum Congress (SPE/WPC) reserve classification standards).

RAB

Regulatory Asset Base. The capital value of the asset base used by price regulators in setting or monitoring prices or price limits for certain regulated utility companies.

Renewable energy

Power and heat generated using renewable energy sources, which include water (hydro power) and wind (wind power).

Renewable generation

Power and heat generated from renewable energy sources

Reserve margin

The difference between peak-load and the
capacity that is expected to operate during peak load.

Residential

Private households

Retrofit

The redesign of, or modification to, existing
facilities to incorporate new technology, meet new requirements, or otherwise provide performance not foreseen in the original design.

Supply-obligation

A company with a supply-obligation is bound by law to deliver power or natural gas in a certain geographic area at prices approved by the Danish Energy Regulatory Authority.

SO2

Sulfur dioxide.

Thermal generation

Power and heat generated through the combustion of fossil fuels, biomass or waste.

Thermal generation plant

A plant that generates energy using thermal
generation.

TJ

Terajoule, a unit of energy. 1 TJ is equivalent to 1,000 GJ or 1,000,000 MJ.

Ton

Metric ton. 1 metric ton is equivalent to 1,000 kilograms.

Total net efficiency

The energy content in both the power and heat generated by a thermal generation plant divided by the total energy content of the fuel consumed.

TSO

Transmission System Operator (in Denmark,
Energinet.dk). The TSO is responsible for operating, ensuring the maintenance of and developing the natural gas transmission network in a given area and the 400 kV power transmission networks and for ensuring an efficient operation of the natural gas and power markets.

TW

Terawatt, a unit of power. 1 TW is equivalent to 1,000 GW, 1,000,000 MW and 1,000,000,000 kW.

TWh

Terawatt hour. The amount of energy generated or used in 1 hour with the effect of 1 TW.

UKCS

The U.K. continental shelf.

Upstream

The processes of natural gas and oil exploration, development and production, and the process of transportation of the produced natural gas and oil to the market.

V

Volt, a unit of voltage.

Watt

Watt (W), a unit of power. 1 W is equivalent to the generation or use of 1 J per second.

Wh Watt-hour. The amount of energy generated in 1 hour with the effect of 1 W.
Wind power

Power generated using onshore or offshore wind turbines.

Wind turbines

Turbines powered by the force of wind, used to
generate power.

WtE plant

Waste-to-Energy” plant that uses waste
combustion for the generation of power and heat. The load is primarily determined by the supply of waste to the plant.

Virtual power plant

A set of contractual agreements in which one party purchases the right to a specified level of power generation capacity for a pre-determined period of time while the selling party owns and operates the capacity for the benefit of the purchaser during that period.


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