ENTSOG BAL NC Monitoring Report 2016

Slovenia

BAL.1 Slovenia (yearly)

The BAL.1 indicator of ca. 86% on a yearly basis il- lustrates that the Slovenian TSO mainly used STSP products, but partially also balancing services in its implemented balancing merit order in GY2015/2016. The BAL.1 indicator for a daily basis indicates that for Slovenia especially in the first half of October 2015 and then also on some days during GY 2015/2016 only balancing services were used. Until the end of the year 2015 the fluctuation of the BAL.1 indicator between STSP and balancing services usage was quite high. From the beginning of January 2016 balancing actions have been mainly conducted via STSP prod- ucts with some exceptional days. It seems that even the days when balancing actions by the TSO occurred were reduced as of May 2016.

14.15

STSP Balancing Services

%

85.85

Figure 6:  Yearly BAL.1 indicator, Slovenia

BAL.1 Slovenia (daily)

120 %

No balancing actions by TSO at all

100

Only usage of STSPs

80

60

40

20

Only balancing services have been conducted

0

01/10/2015

01/11/2015

01/12/2015

01/01/2016

01/02/2016

01/03/2016

01/04/2016

01/05/2016

01/06/2016

01/07/2016

01/08/2016

01/09/2016

Figure 7: Daily BAL.1 Slovenia: Usage of STSPs as % of total balancing volume in GY 2015/2016

ENTSOG BAL NC Monitoring Report 2016 |

99