ENTSOG BAL NC Monitoring Report 2016

Slovakia

BAL.1 Slovakia (yearly)

The BAL.1 indicator of ca. 34% on a yearly basis, illustrates that the Slovakian TSO is partially balanc- ing via STSP products on its balancing platform, but mainly via balancing services in its implemented balancing merit order in GY 2015/2016. The BAL.1 indicator on a daily basis indicates that for Slovakia the TSO only had to balance the system on six days in GY 2015/2016. The STSP product was only used on one day in February, and on three days in May 2016, but as a minor part compared to the balancing services. The balancing was conducted via balancing services only on two days in July 2016. The TSO balancing actions occur on 6 days in GY 2015/2016 as the TSO indicated it only performed balancing actions when the overall system imbalance exceeds a certain threshold. Further details are pro- vided in Chapter 4.3.

STSP Balancing Services

33.66

%

66.34

Figure 8:  Yearly BAL.1 indicator, Slovakia

BAL.1 Slovakia (daily)

120 %

Only STSP used in February

100

80

60

40

Only balancing services used on 2 days in July

20

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 9: Daily BAL.1 Slovakia: Usage of STSPs as % of total balancing volume in GY 2015/2016

100 |

ENTSOG BAL NC Monitoring Report 2016