eu gas balancing code – nomination update [revised to reflect action tx1002] action tx1002: eu...

EU Gas Balancing Code – Nomination Update [Revised to reflect action TX1002]

Action TX1002: EU Balancing Code/Nominations: Provide an overview of what areas/decisions National Grid has autonomy over, and those that must be agreed with other parties.

Nomination Process at IPs

2

Balancing Code Defines:

1.Nomination Deadline

2.Nomination Confirmation Deadline

3.Renomination Process Timings

NG Impact Assessment [May 2013]Impacts Action

Major • New Nomination procedure at Interconnection Points (IPs) is a significant impact for GB

• Nomination related procedures contained in Gas Balancing, CAM, CMP and Interoperability Codes

• NTS have been investigating the interactions between these codes

• A number of policy/implementation issues have been analysed and our initial view on them has been defined

• Where possible consistency with the GB regime [non IPs] has been maintained

• NG NTS is happy to discuss any of these issues in further detail

• The end to end process/system needs to be mapped• Nomination process and policy views to also be discussed

with Adjacent TSOs. No code requirement to conduct a specific industry consultation on EU Nominations rules.

Nomination Policy – NG Current View

Nominations can be submitted from D-30 as per the UNC (the EU Balancing Code is silent on this point) [Application TBC with adjacent TSOs]

National Grid will not be offering a Pre-nomination cycle [TSOs may agree to offer]

Over-nomination requests for within-day interruptible capacity will not be offered: [TSO may reject nom if allocated capacity is exceeded and/or may treat over-nom as a request for interruptible capacity]

The GB regime will continue whereby Nominated gas quantities will not be validated by National Grid against any prevailing Entry or Exit Capacity Entitlement except in the case of an Exceptional Event

Any quantities of gas allocated to NTS Users in excess of Entry or Exit Capacity Entitlement will accrue Overrun Charges

Nomination Policy – NG Current View (2)

A User holding both Bundled Capacity and Unbundled Capacity at an IP may submit separate Single Sided Nominations and Double Sided Nominations [CAM/Bal is only concept level – application TBC with adjacent TSOs]

A ‘Single Sided Nomination’ is a notice issued by a User to an Initiating Transporter, who forwards this to the Matching TSO

A ‘Double Sided Nomination’ is a notice issued by the User/s either side of an IP to their respective Transporters

National Grid intends to maintain the requirement for the provision of flow notifications from operators at NTS entry and exit points (i.e DFNs and OPNs) [TSO may require network users to provide further information]

Nomination Assumptions

Prior to the implementation of the Nomination rules, National Grid and the adjacent Transporter will agree (and specify within the IA):

Identity of Initiating Transporter and the Matching Transporter

The harmonised information contained within the data exchange for the matching process - ‘EDIGAS xml’ messages will be utilised

The agreed method to ensure that the Processed Quantities for the National Grid User and the User’s Counterparty are equal (which by default shall be the ‘Lesser Rule’)

The adjacent TSO will be; Interconnector UK (IUK), BBL & Gas Link (subject to outcome of two way/three way capacity bundling discussions)

Nomination Process Overview

Content of a Daily Nom

Units (kWh)

Shipper submits nom no later than 13:00 (latest nom will be

used)

D-1 13:00 D-1 13:00

Within 2 hrs

D-1 15:00

Revised Confirmed Quantity sent by TSO[s] in Confirmation Notice (before gas flow change comes

into effect)

On hour bar

Shippers may submit a renom

From D-1 15:00 to D 02:00

Renomprocess

Rejection Rules

It does not comply with requirement for content

Submitted by incorrect body

Results in negative flow rate

Capacity Allocation Exceeded for remaining hrs [only expected to be to be used in

Exceptional Events]

SHALL NOT REJECT (if nom inputs do not = nom outputs)

No later than 2 hrs

If nom or renom rejected TSO shall use Users last Confirmed Quantity

If no valid nom sent before deadline the TSOs default shall apply - zero

45 mins to calc and send Processed Quantity by Initiaiting

TSOMatching Process / Interop

45 mins to calc and send Confirmed Quantity by Matching

TSO

Confirmation Notice issued to Shipper no later than 15:00

Renom cycle starts at every hour bar (latest renom will be

used)

Nomination against bundled capacity may be submitted

via a single sided nomination

30 mins for Confirmation to Shippers

No later than 2 hrs

Renomination only

Nomination & renom

Exceeds Shippers allocated capacity [only expected to be used in Exceptional Events]

NOTE

In Exceptional Events NG may amend the gas quantity requested in nom/renom in

accordance with National Rules

Nomination against unbundled capacity shall be submitted via a double sided

nomination

Matching Process Principles Single sided Nom – Processed Quantity

= Confirmed QuantityDouble sided Nom – “Lesser rule” used

to determine Confirmed Quantity

Nominationprocess

Within 2 hrs

45 mins to calc and send Processed Quantity by Initiaiting

TSOMatching Process / Interop

45 mins to calc and send Confirmed Quantity by Matching

TSO

Matching Process Principles Single sided Renom – Processed

Quantity = Confirmed QuantityDouble sided renom – “Lesser rule”

used to determine Confirmed Quantity

Start

1

2

3

4

5

Example 1 – “Easy” match (Double Sided Nom)

National Grid Transmission Network Adjacent Transporter's Transmission Network

User A Charges20 Capacity, 18 Commodity, 0 Overrun

User B ChargesAs per Adjacent Transporter arrangements

Interconnection Point

User A Nomination18

User A NTS Exit Capacity Entitlement20 (Unbundled)

Confirmed Quantity (to User B)18

Confirmed Quantity (to User A)18

User B Nomination18

20 (Unbundled)

18Processed Quantity MATCH

User B Entry Capacity Entitlement

Processed Quantity 18

Example 2 – “Easy” match (Single Sided Nom)

National Grid Transmission Network Adjacent Transporter's Transmission Network(In this example, the Initiating Transporter) (In this example, the Matching Transporter)


User A Nomination User A Nomination (forwarded)18 18

User A NTS Exit Capacity Entitlement User A Entry Capacity Entitlement

20 Capacity, 18 Commodity, 0 Overrun As per Adjacent Transporter arrangements

Forwarded by National Grid

Confirmed Quantity (to User A) Confirmed Quantity (to User B)18 18

User A Charges User A Charges

20 (Bundled) 20 (Bundled)

Processed Quantity MATCH Processed Quantity 18 18

Example 3 – “Easy” match (Multiple Double Sided Nom)


* one single Capacity Charge levied for 20 units, one single Commodity Charge levied for 20 units

15 Capacity*, 15 Commodity*, 0 Overrun As per Adjacent Transporter arrangements

Confirmed Quantity (to User A) Confirmed Quantity (to User C)15 15

User A Charges User C Charges

User A NTS Exit Capacity Entitlement User C Entry Capacity Entitlement20 (Unbundled) 15 (Unbundled)


5 Capacity*, 5 Commodity*, 0 Overrun As per Adjacent Transporter arrangements

User A Nomination 2 User C Nomination15 15


User A Charges User B Charges

20 (Unbundled) 5 (Unbundled)


User A NTS Exit Capacity Entitlement User B Entry Capacity Entitlement


User A Nomination 1 User B Nomination5 5

Example 4 – Lesser Rule (Double Sided Nom)



User A Nomination User B Nomination18 15


Matching rule applied as specified

default 'Lesser in Interconnection Agreement



Processed Quantity NO MATCH Processed Quantity 18 15

Rule' used in this example.



Example 5 – Overrun (Double Sided Nom)









User A Nomination User B Nomination25 25

eu gas balancing code – nomination update [revised to reflect action tx1002] action tx1002: eu...

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