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Daily imbalance charge calculation
methodology (Art. 20)
The methodology approved by the NRA has to be
published on a relevant website. 24 countries in-
cluding Estonia (AT, BE, BG, CZ, DE, DK, EL, ES,
FR, HU, IE, IT, LT, LU, NL, PL, PT, RO, SE, SK,
SI, UK-GB, UK-NI) provided the link to the pub-
lished daily imbalance charge calculation meth-
odology or to the published interim imbalance
charge. Croatia39) published another applicable
methodology which is currently under revision.
The provided links to the published methodolo-
gies can be found in in
According to BAL NC provisions, the daily imbal-
ance charge calculation methodology shall
define the calculation of the daily imbalance
quantity, the derivation of the applicable price
and any other necessary parameter.
Daily imbalance quantity calculation (Art. 21)
As part of the calculation methodology, the
approved daily imbalance quantity shall be cal-
culated for each network user’s portfolio as the
difference between the inputs and off-takes for
each gas day. In 25 countries including Estonia
(AT, BE, BG, CZ, DE, DK, EL, ES, FR, HR, HU,
IE, IT, LT, LU, NL, PL, PT, RO, SE, SK, SI, UK-GB
and UK-NI) the daily imbalance quantity is
calculated for each network user’s balancing
portfolio for each gas day.
In eight countries including Estonia (CZ, EL, ES,
NL, PT, SE and SK) the above-mentioned daily
imbalance quantity calculation is adapted ac-
cording to BAL NC due to the fact that a linepack
flexibility service is offered (CZ, NL, PT and SE)
or an arrangement is in place (EE, EL ES and
SK) whereby network users provide gas to the
system. Further details can be found in
23 countries (AT, BE, BG, CZ, DE, DK, EL, ES,
FR, HU, IE, IT, LT, LU, NL, PL, PT, RO, SE, SK,
SI, UK-GB, UK-NI) except two countries (EE40)
and HR) reported that the daily imbalance
charge is based on the final daily imbalance
quantity.
39) There is no implementation of daily imbalance charge; the current methodology is used according to the Rules on the Organisation of the
Gas Market. The daily imbalance charge calculation methodology will be implemented by 1 April 2017.
40) Balancing gas sale and purchase offers
41) There is no implementation of daily imbalance charge; current methodology is used according to the Rules on the Organisation of the Gas Market.
42) In Austria, daily imbalances are settled at the exchange of the VTP in the name and on behalf of the respective balance group responsible party if
the BGRPs do not balance themselves after receiving an imbalance notification. Thus, the imbalance charge is the market price at the exchange.
Transactions at the VTP are executed at the reference price published on the website of the operator of the VTP (CEGH) at that time.
43) In the Netherlands, the daily imbalance charge is always zero, because the daily imbalance volume is always zero. The imbalance quantities are
absorbed by the linepack flexibility service according to art. 21.2 BAL NC.
Applicable price (Art. 22)
As part of the calculation methodology, the
applicable price for the daily imbalance charge
calculation shall take into account the marginal
sell/buy price, weighted average price of the gas
and a small adjustment. Title and locational
products can only be taken into account for
determining the prices. Out of 18 countries
where the daily imbalance charge methodology
applies, 13 countries (BE, CZ, DE, DK, ES, FR,
HU, IT, LT, LU, PL (H-gas), SI and UK-GB)
reported the determination of the applicable
price by 1 October 2016. Two countries (EE and
HR41)) have not implemented the provisions
while two other countries (AT42) and NL43))
repeated as in the previous report that the provi-
sions are not applicable.
Portugal have implemented partially the provi-
sions of applicable price. Although a trading
platform and STSPs have not been implemented
yet, a default rule for derivation of weighted
average price is in place, taking into account the
trades at the PVB (Spanish Virtual Trading
Point). According to the NRA's decision, Mibgás,
S.A., operating the Spanish Trading platform at
the Spanish VTP (PVB) shall be the future
Market Operator in Portugal.
Where interim measures are necessary the price
derivation may be calculated in accordance with
the interim measure report which shall substi-
tute the daily imbalance charge methodology.
In eight countries applying interim measures
(BG, EL, IE, PL (L-gas and TGPS), RO, SE, SK,
UK-NI) the price derivation is calculated in
accordance with the interim imbalance charge.
While Romania reported the implementation of
the interim imbalance charge by 1 October
2016, Bulgaria indicated its finalisation by
1 January 2017.
According to BAL NC a default rule shall be
defined in case a marginal sell price and/or a
marginal buy price is not available. Further
details can be found in
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