ENTSOG BAL NC Monitoring Report 2016

INDICATOR BAL.1

DEFINITION

STSP volume as % of total TSO balancing volume

The BAL.1 indicator is calculated per runtime by dividing the total quantity of gas traded by the TSO via STSPs for balancing purposes through the total volume of all TSO balancing volumes per balancing zone. The indicator is provided for a yearly runtime and where additionally balancing services are used in GY 2015/2016 also on a daily basis. (Different runtimes might be provided for the future.) If no STSP is implemented in the balancing merit order and/or no balancing actions have been undertaken by the TSO for the gas day, the BAL.1 indicator is not calculated. Formula: = Total traded volume of STSP by TSO (for balancing purposes)/Total TSO balancing volume [in %/runtime]

Unit

STSP volume of total TSO balancing volume in %

Aim

Maximisation of STSP % rate, where possible.

INPUT DATA FOR INDICATOR BAL.1

DEFINITION

Total volume of STSP for balancing purposes:

The total gas volumes of all short term standardised products (STSP) [SELL +BUY] which are sold to the market [SELL] or bought from the market [BUY] by the TSO for balancing purposes on a short-term wholesale market via a trading platform (Art. 10) where trade notifications are taking into account in its balancing system or via a balancing platform (art. 47) following the merit order (art. 9). Formula: Total volume of STSP [in MWh/runtime/balancing zone] = ∑ volumes of title STSP [SELL +BUY] + ∑ volumes of locational STSP [SELL+BUY] + ∑ volumes of temporal STSP [SELL +BUY] + ∑ volumes of temporal locational STSP [SELL +BUY]. The sum of gas volumes [SELL 1)  +BUY  2) ] of all balancing services (according to article 8) which are conducted by the TSO following the merit order (art. 9) for balancing purposes. Formula: Total volumes of Balancing Services [in MWh/runtime/balancing zone] = ∑ volumes of balancing services 1 [SELL+BUY] + ∑ volumes of balancing services 2 [SELL +BUY] +… + volumes of balancing services n [SELL+BUY]. The sum of gas volumes [SELL +BUY] of all Interim Measures which are conducted by the TSO following a merit order for balancing purposes. Formula: Total volume of Interim Measures [in MWh/runtime/balancing zone] = ∑ volumes of Interim Measure 1 [SELL +BUY] + ∑ volumes of Interim Measure 2 [SELL +BUY] +…  + volumes of Interim Measure n [SELL+BUY] The sum of gas volumes [SELL +BUY] of all balancing products which are conducted by the TSO following a merit order for balancing purposes. Formula: Total TSO balancing volume [in MWh/runtime/balancing zone] = Total volumes of STSP [in MWh] + total volumes of balancing services [in MWh] + Total volumes of Interim Measures [in MWh]. Indicator BAL.1 (per year) = Total volume of STSP for balancing purposes/Total TSO Balancing volume [in % per year]. Indicator BAL.1 (per gas day) = ∑ Total volume of STSP for balancing purposes per gas day/∑ total TSO balancing volume per gas day [in %].

Total volume of Balancing Services:

Total volume of Interim Measures

Total TSO balancing volume

Indicator BAL.1

DATA REQUIREMENTS

Unit

Absolute volumes in MWh (provided per gas day)

Minimum unit

MWh (provided per gas day)

Requested runtime

1 October 2015 – 30 September 2016 (gas days)

1) In this case the gas is withdrawn from the network system. 2) In that case, gas is injected into the network system.

92 |

ENTSOG BAL NC Monitoring Report 2016