Entry/Exit gas quality

Gas quality naturally varies depending on the origin of the gas. Here is given the hourly unvalidated data for the entry/exit and central points: Nybro (Danish North Sea), Dragør Border (Sweden), Ellund (Germany), Bevtoft (Biogas plant), Ll. Torup (Storage), Stenlille (Storage), and Egtved (Gas cross). Natural gas delivered to Danish consumers may originate from more than one supply area.

The values listed are for informational purposes only and are not suited for settlement purposes. Though Energinet consider the numbers to be true, we cannot guarantee the accuracy of the values. Energinet has neither verified nor approved the information.

The information can be auto validated by the user with the validation rules written for each factor in Meta Data.


Hour UTC

Comment

Please note that the format shown in the example applies to data download as JSON, XML or fetched through the API and is in accordance with the ISO 8601 standard. The format is slightly different when it is shown on screen or downloaded manually as CSV or XLSX. This is mainly due to readability and consideration for Excel users.

In preview (in the GUI) all timestamps are shown as (display convention) YYYY-MM-DD hh:mmZ e.g. 2017-07-14 08:00Z. The Z will remind viewers that this is UTC.

In download (CSV and XLSX) the date time are exported as YYYY-MM-DD hh:mm e.g. 2017-07-14 08:00. That is without the \u201cT\u201d and the \u201cZ\u201d and the seconds. Excel will recognize it as date-time. The user must remember the convention about time zones.

In download (JSON and XML) the full format is used YYYY-MM-DDThh:mmZ e.g. 2017-07-14T08:00Z.

Description

A date and time (interval), shown in UTC time zone, where the values are valid. 00:00 o\u2019clock is the first hour of a given day interval 00:00 - 00:59 and 01:00 covers the second hour (interval) of the day and so forth. Please note: The naming is based on the length of the interval of the finest grain of the resolution.

Title

Hour UTC

Property constraint
Format
Name

HourUTC

Validation rules

Always full hours, i.e. minutes are 00

Type

datetime

Example

2017-07-14T08:00Z

Unit
Size

17

Hour DK

Comment

On one normal day there will be 24 intervals.

When daylight saving times shifts there will be either 23 or 25 intervals.

Please note that the format shown in the example applies to data download as JSON, XML or fetched through the API and is in accordance with the ISO 8601 standard. The format is slightly different when it is shown on screen or downloaded manually as CSV or XLSX. This is mainly due to readability and consideration for Excel users.

In preview (in the GUI) all timestamps are shown as (display convention) YYYY-MM-DD hh:mm e.g. 2017-07-14 08:00. Please note that is no time zone indicator, showning that this is local (Danish) time.

In download (CSV and XLSX) the date time are exported as YYYY-MM-DD hh:mm e.g. 2017-07-14 08:00. That is without the \u201cT\u201d and the seconds. Excel will recognize it as date-time. The user must remember that this is local (Danish) time.

In download (JSON and XML) the format used is YYYY-MM-DDThh:mm e.g. 2017-07-14T08:00.

Description

A date and time (interval), shown in Danish time zone, where the values are valid. 00:00 o\u2019clock is the first hour of a given day, interval 00:00 - 00:59, and 01:00 covers the second hour period (interval) of the day and so forth.

Title

Hour DK

Property constraint
Format
Name

HourDK

Validation rules

Always full hours, i.e. minutes are 00

Type

datetime

Example

2017-07-14T08:00

Unit
Size

17

Entry/exit point

Comment
Description

Entry, exit and central points for the Danish gas transmission system.

Title

Entry/exit point

Property constraint
Format
Name

EntryExitPoint

Validation rules
Type

string

Example

Ellund

Unit
Size

50

Gross Calorific Value

Comment
Description

A term describing the amount of heat developed by combustion of one cubic metre of gas at constant pressure when the gas and air for the combustion have a temperature of 25\u00b0C, the combustion products being brought to that temperature and the water formed by the combustion being present in liquid state. The reference conditions for normal cubic metres are 0\u00b0C and 1 atm.

Title

Gross Calorific Value

Property constraint
Format

([0-9]*[,])[0-9][0-9][0-9][0-9]

Name

GrossCalorificValue-MJ_per_Nm3

Validation rules

[35:55]

Type

number

Example

43.8149

Unit

MJ/Nm\u00b3

Size

9.4

Gross Calorific Value

Comment
Description

A term describing the amount of heat developed by combustion of one cubic metre of gas at constant pressure when the gas and air for the combustion have a temperature of 25\u00b0C, the combustion products being brought to that temperature and the water formed by the combustion being present in liquid state. The reference conditions for normal cubic metres are 0\u00b0C and 1 atm.

Title

Gross Calorific Value

Property constraint
Format

([0-9]*[,])[0-9][0-9][0-9][0-9]

Name

GrossCalorificValue-kWh_per_Nm3

Validation rules

[9.7;15.3]

Type

number

Example

12.1708

Unit

kWh/Nm\u00b3

Size

9.4

Net Calorific Value

Comment
Description

A term describing the amount of heat generated, when the tem-perature of the combustion air and the natural gas prior to com-bustion is 25\u00b0C, when the combustion products (flue gas) are cooled to 25\u00b0C, and when the water produced during combustion is present in the form of steam. The reference conditions for normal cubic metres are 0\u00b0C and 1 atm.

Title

Net Calorific Value

Property constraint
Format

([0-9]*[,])[0-9][0-9][0-9]

Name

NetCalorificValue-MJ_per_Nm3

Validation rules

[30;50]

Type

number

Example

39.6757

Unit

MJ/Nm\u00b3

Size

9.4

Net Calorific Value

Comment
Description

A term describing the amount of heat generated, when the tem-perature of the combustion air and the natural gas prior to com-bustion is 25\u00b0C, when the combustion products (flue gas) are cooled to 25\u00b0C, and when the water produced during combustion is present in the form of steam. The reference conditions for normal cubic metres are 0\u00b0C and 1 atm.

Title

Net Calorific Value

Property constraint
Format

([0-9]*[,])[0-9][0-9][0-9]

Name

NetCalorificValue-kWh_per_Nm3

Validation rules

[8.3;13.9]

Type

number

Example

10.9874

Unit

kWh/Nm\u00b3

Size

9.4

Wobbe Index

Comment
Description

The Wobbe index offers information about the heating effect a burner is exposed to during combustion of a fuel. The greater the Wobbe index, the greater the heating effect and thereby the greater the load on the burner. The load on a burner is thus directly proportional to the Wobbe index. Different gases with the same Wobbe index will impose the same load on the burner.

Title

Wobbe Index

Property constraint
Format

([0-9]*[,])[0-9][0-9][0-9][0-9]

Name

WobbeIndex-MJ_per_Nm3

Validation rules

[45;60]

Type

number

Example

54.8543

Unit

MJ/Nm\u00b3

Size

9.4

Wobbe Index

Comment
Description

The Wobbe index offers information about the heating effect a burner is exposed to during combustion of a fuel. The greater the Wobbe index, the greater the heating effect and thereby the greater the load on the burner. The load on a burner is thus directly proportional to the Wobbe index. Different gases with the same Wobbe index will impose the same load on the burner.

Title

Wobbe Index

Property constraint
Format

([0-9]*[,])[0-9][0-9][0-9][0-9]

Name

WobbeIndex-kWh_per_Nm3

Validation rules

[12.5;16.7]

Type

number

Example

15.2373

Unit

kWh/Nm\u00b3

Size

9.4

Normal Density

Description

Normal density is the mass of a normal cubic meter of gas. The reference conditions for normal cubic metres are 0\u00b0C and 1 atm.

Title

Normal Density

Property constraint
Format

([0-9]*[,])[0-9][0-9][0-9][0-9]

Name

NormalDensity

Validation rules

[0.5;1]

Type

number

Example

0.8241

Unit

kg/Nm\u00b3

Size

9.4

Methane Number

Comment

Per definition pure methane has a methane number of 100 and pure hydrogen a methane number of 0. A content of higher hydrocarbons than methane reduces the methane number while the CO2 content increases the methane number.

Currently not available

Description

A methane number characterises the gas’s knock tendency as a fuel for gas engines. It can be compared to the octane number for petrol.

Title

Methane Number

Property constraint
Format

([0-9]*[,])[0-9]

Name

MethaneNumber

Validation rules

[50;120]

Type

number

Example

71

Unit

Number

Size

3.1