“Transmission system operators shall publish at least the following information about their systems and services:
l) procedures agreed upon by transmission system operators at interconnection points, of relevance for access of system users to the transmission systems concerned, relating to interoperability of the system, agreed procedures on nomination and matching procedures and other agreed procedures that set out provisions in relation to gas flow allocations and balancing, including the methods used;”
I. Nomination, allocation and accounting rules specific to the Austrian-Hungarian entry point and backhaul delivery:
The entry point of the Hungarian natural gas transmission system from Austria direction is the Austrian/Hungarian border point, with measurements carried out at Mosonmagyaróvár.
Nomination and re-nomination shall be carried out through the system of OMV Gas by determining the hourly values. In order for the modified daily amount submitted to FGSZ Zrt. to be reasonably comparable to the nomination equivalent on the Austrian natural gas transmission system of the same-day re-nomination of the System user with daily contracted capacity on the Hungarian natural gas transmission system, it shall be allocated for the hours remaining from the gas day:
The difference between the original (previous) day and the new nomination shall be divided between the hours beginning with the second full hour following the order.
The system user shall carry out the re-nomination for OMV Gas as specified in point 1.
FGSZ Zrt. follows up on the modified daily amount with OMV Gas.
In order to ensure the consistency of the nominations submitted to the two operators (OMV Gas and FGSZ Zrt.) regarding the Austrian-Hungarian entry point, and taking into account that in terms of the Hungarian natural gas transmission system, nomination shall be determined based on the net calorific value (NCV) of the energy, expressed in MJ (at 15oC/15oC), while in terms of the Austrian natural gas transmission system nomination is determined based on the gross calorific value (GCV) of the energy, expressed in MWh (at 25oC/0oC), in determining nominations the following conversions shall be carried out:
FGSZ Zrt. publishes the weighted upper calorific value (gross calorific value) (GVC) in kWh/m3 (at 25oC/0oC) and the lower calorific value (net calorific value) (NCV) in MJ/m3 (at 15oC/15oC) at Mosonmagyaróvár to System Users with regard to the last closed month, with an accuracy of two decimal places.
Both the System User and FGSZ Zrt. determine the energy nominated on the basis of the GCV expressed in MWh (at 25oC/0 0C) using the following formula:
Energy (GCV-based, 25oC/0oC) = ((energy (NCV-based, 15oC/15oC) / NCV(15oC/15oC))/ 1.054915) * GCV(25oC/ 0oC)
i.e. the energy calculated on the basis of 15oC/150C lower calorific value expressed in MJ shall be divided by NCV expressed in MJ/m3 (at 15oC/15oC), and then it shall be divided by 1.054915 and multiplied by GCV (at 25oC/0oC) expressed in MWh/m3.. The result is the GCV-based energy expressed in MWh (at 25oC/0 0C).
System Users shall submit their nominations to OMV Gas regarding the HAG system for each of their partners shipping through the Hungarian natural gas transmission system (“shipper-pair nomination”) in energy calculated on the basis of gross calorific value expressed in MWh (at 25oC/0oC).
System Users shipping through the Hungarian natural gas transmission system shall submit their nominations to FGSZ Zrt. regarding each of their partners shipping through the HAG system (“shipper-pair nominations”) through the Informatic Platform in energy calculated on the basis of lower calorific value expressed in MJ (at 15oC/15oC).
FGSZ Zrt. takes into account such daily energy amounts during the nomination consistency examination (matching procedure). FGSZ Zrt. does not assume liability for consequences resulting from the incorrect calculations made by System users.
If there is any discrepancy in the nominations observed during the nomination consistency examination (matching procedure), both system operators considers the lower value as the delivery assignment.
If the lower value is the nomination value submitted regarding the Austrian transmission system, FGSZ Zrt. examines the discrepancy in nominations as compared to the original nomination.
- If a re-nomination is carried out regarding the Austrian transmission system on the same gas day, FGSZ Zrt. and OMV Gas conduct a nomination consistency examination (matching procedure) as described in point 9.
The amount allocated to each System User at the entry point of the Hungarian natural gas transmission network on the Austrian-Hungarian border equals the last effective examined (matched) amounts provided by the System Users and accepted by system operators.
Accounting and recording
FGSZ Zrt. accepts the natural gas amount injected by System Users for transmission at the entry point under a protocol. Such protocol records the amount of energy delivered and accepted each day, based on NCV and expressed in MJ (at 15oC/15oC).
II. Unified storage points:
The storage points of E.ON Földgáz Storage Zrt. connected to pipelines have been unified. The unified storage facility consists of the following units: Pusztaederics, Zsana, Hajdúszoboszló, and Kardoskút. Nomination for these storage points shall be submitted on a unified basis under codes SIFORRASFSEN and SIFGTAROLSEN.
- System users also using the production facility at Kardoskút shall contract capacity with regard to the unified storage point and nominate the production energy content to be injected with regard to this network point.
- Options may be offered regarding the above trade point.
- The volume and energy content of the unified storage point shall be determined as the total of the amounts measured and the energy content of each physical points established through quality measuring, the quality parameters of the consolidated storage facility and the weighted arithmetic average of the values measured and calculated for each physical storage facility involved in the consolidation.
- The System User is responsible for the quality of the natural gas injected at each physical point.
- Allocation is determined with regard to the specific storage point consolidated in the storage facility.
- Options may be exercised with regard to the consolidated storage point.
- In case of using virtual storage, the conditions described at www.fgsz.hu shall be applied. (The conditions of EFS plus virtual storage)
III. Exit points:
Allocation of daily gas amount:
The relating system operator allocates the gas amount between system users following the gas day.
Determination of overrun capacity:
At the exit points, where the System User delivers the natural gas to its users through a distribution system or through the system of directly connected customer pipeline system, the level of capacity overrun shall be determined based on the data provided by the neighbouring system operator.
Pursuant to the rule described in Appendix 3 of Tariff Decree No. 31/2009, Parties agree that the period of interruption regarding the interruptible capacities contracted at the entry and exit points shall cover the whole gas year – irrespective of the number of interruptible days (i.e. if the gas year is interruptible or not) – and the full term of the contract.
IV. The Romanian-Hungarian interconnector
The System User shall contract capacity at the following entry and exit points, expressed in MJ/h (and MJ/day):
- Regarding domestic entry point(s) (if the system user intends to provide the resource side entry from an existing portfolio, no capacity needs to be allocated for this specific purpose at the domestic entry point).
- Regarding the exit point “Algyő” under network code KEALGYO03DCN (exit point of the Hungarian natural gas transmission network).
- Regarding the exit point “Hungarian/Romanian Border Measuring Station Csanádpalota”.
Nomination consistency examination (matching):
Both the System User and FGSZ Zrt. determine the energy nominated on the basis of GCV expressed in MWh (at 15oC/15oC) using the following formula:
Energy (15oC/15oC) = ((energy (15oC/15oC;MJ-ban) / NCV(15oC/15oC;MJ/m3)) * GCV(15oC/ 15oC;MWh/m3)
i.e. the energy calculated on the basis of 15oC/15 0C lower calorific value expressed in MJ shall be divided by NCV expressed in MJ/m3 (at 15oC/15oC) and then multiplied by GCV (at 15oC/15oC) expressed in MWh/m3. The result is the energy expressed in MWh (at 15oC/15oC).
TRANSGAZ provides FGSZ Zrt. with the energy amounts submitted by the Romanian system users regarding the Romanian system in MWh (15°C/15°C), for each user per hour, by 13:15 on the day prior to the gas day. In determining the energy amount, GCV values shall be indicated in MWh/m3(s), with an accuracy of five decimal places. Considering that the gas day covers the time period between 6 a.m. and 6 p.m. Hungarian time, the Hungarian gas day involves to two Romanian gas days due to the time lag.
The average value of the 3rd day prior to the current day shall be used as the daily average GCV value, published by FGSZ Zrt. by 11 a.m. on the day prior to the gas day.
If there is any discrepancy in the Hungarian and the Romanian nominations, FGSZ Zrt. considers the lower value as the delivery assignment.
The amount delivered is determined on the basis of the amounts examined (matched) by FGSZ Zrt. and Transgaz, on a pro rata basis. Allocation is expressed in MJ/day.
Accounting and recording:
Energy amounts are accounted in MJ/day.
The Relating System Operators adjust the amount for each month, as necessary, by the 5th day of the month concerned and record the final allocation for each system user by the 10th of each month in the IT Platform.
V. General contractual obligations:
The System User shall ensure that minimum amount of the capacity contracted on the natural gas distribution system shall equal the capacity contracted at the exit point of the natural gas transmission system.