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Imbalance Settlement Period (Electricity Balancing Market)
European Union Electricity Market Glossary

 

 

 

Commission Regulation (EU) 2017/2195 of 23 November 2017 establishing a guideline on electricity balancing defines an imbalance settlement period (ISP) as the time unit for which the imbalance of the balance responsible parties is calculated (Article 2(10)).

 

The so-called 'Winter Energy Package' uses the same definition (Article 2(2)(n) of the Proposal for a Regulation of the European Parliament and of the Council on the internal market for electricity (recast), 30.11.2016, COM(2016) 861 final 2016/0379 (COD)).

imbalance settlement period 

The length of the imbalance settlement period impacts on:

 

imbalance pricing methodology (i.e. single or dual);

 

balancing processes required (use of replacement reserves or not);

 

balancing energy products (e.g. scheduled, pure energy products or only direct activated power products); and

 

- volume calculation (request or metered).

 

Pursuant to the draft ENTSO-E Electricity Balancing Network Code (NC EB) the harmonisation of the imbalance settlement period within and between synchronous areas was envisioned no later than two years after the NC EB entry into force.

 

The stepwise approach was envisioned through a proposal of all Transmission System Operators (TSOs) submitted for approval to all national regulatory authorities (NRAs) based on a cost-benefit analysis.

 

According to the ENTSO-E draft code the imbalance settlement period was maximally 30 minutes, however, each TSO had the right to develop a proposal to deviate from the decision on the harmonisation of imbalance settlement periods on the base of specific cost-benefit analysis.

 

However, the Agency for the Cooperation of Energy Regulators (ACER) proposed some amendments to the ENTSO-E vision of the imbalance settlement period. 

 

 

Commission Regulation (EU) 2017/2195 of 23 November 2017 establishing a guideline on electricity balancing

 

Article 53 

Imbalance settlement period

 

1. By three years after the entry into force of this Regulation, all TSOs shall apply the imbalance settlement period of 15 minutes in all scheduling areas while ensuring that all boundaries of market time unit shall coincide with boundaries of the imbalance settlement period.


2. The TSOs of a synchronous area may jointly request an exemption from the requirement laid down in paragraph 1.


3. Where the relevant regulatory authorities of a synchronous area grant an exemption from the requirement laid down in paragraph 1 upon a joint request of the TSOs in the concerned synchronous area or at their own initiative, they shall perform, in cooperation with the Agency and at least every three years, a cost-benefit analysis concerning the harmonisation of the imbalance settlement period within and between synchronous areas.

 

ACER's Recommendation No 03/2015 of 20 July 2015 on the Network Code on Electricity Balancing called NC EB explicitly defines the length of the of the harmonised imbalance settlement period.

 

The ACER asssessed an harmonised duration equal to 15 minutes as a natural choice for the imbalance settlement period, since 30 minutes, was used, at the date of Recommendation's issuance, only by three EU Members States, whereas 15 minutes was used in eight Member States.

 

ACER proposed such harmonised settlement period should be applied by 1 July 2019.

 

Also acording to Article 7(4) of the said Proposal for a Regulation on the internal market for electricity of 30 November 2016 the imbalance settlement period was set 15 minutes in all control areas, but the deadline that was proposed was 1 January 2025.

 

According to Article 53 of the aforementioned Commission Regulation (EU) 2017/2195 of 23 November 2017 by three years after the entry into force of the said Regulation ( i.e. by 18 December 2021), all TSOs shall apply the imbalance settlement period of 15 minutes in all scheduling areas while ensuring that all boundaries of market time unit shall coincide with boundaries of the imbalance settlement period.


The TSOs of a synchronous area may jointly request an exemption from the respective requirement.

 

 

 

 

 

IMG 0744

    Documentation    

 

 

 

 

 

Electricity Balancing Network Code (Commission Regulation (EU) 2017/2195 of 23 November 2017 establishing a guideline on electricity balancing), Article 2(10), Article 53

 

Proposal for a Regulation of the European Parliament and of the Council on the internal market for electricity (recast), 30.11.2016, COM(2016) 861 final 2016/0379 (COD), Article 2(2)(n), Article 7(4)

 

ACER's Recommendation No 03/2015 of 20 July 2015 on the Network Code on Electricity Balancing

 

 

 

 

 

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Last Updated on Tuesday, 10 April 2018 19:54
 

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