Skip to main content

Each TSO is responsible for performing balance control in its balance area according to the BRELL Agreement within the system imbalance window of scheduled AC net position as follows: Estonia +/- 30 MWh, Latvia +/- 30 MWh, and Lithuania +/- 50 MWh. Until December 31st, 2014, each Baltic TSO had an individual agreement for the sale and purchase of imbalance energy.

As of January 1st, 2015, the Baltic TSOs have a joint open supply agreement.

The objective of the common open supply agreement is to increase the transparency of contractual agreements, and to foster the principle according to which the imbalance costs in the Baltic electricity systems should be founded on equal principles. The latter is a prerequisite in creating a common Baltic balancing power market and a common Baltic trading area, hence providing the market participants with the opportunity to operate under similar conditions in the whole of Baltic.

The following depicts the scheme of the Baltic joint open supply agreement:

uhise_avatud_tarne_joonise_skeem_520x527.jpg

 

With the commencement of the common open supply agreement, the methodology for calculating the imbalance electricity prices in the Estonian power system remains unchanged. Only the reference price for the system not netted open supply changed.

For more information on the Baltic Common Open Supply Agreement and the Baltic Imbalance Settlement Agreement please see down below.

The Russian electricity system’s representative has given INTER RAO Lietuva the power of attorney to act as the Open Balance Provider in the Agreement on the Sale and Purchase of Imbalance Energy in the Baltic Electricity System.

This Agreement has been signed by AB “INTER RAO Lietuva”, Elering AS, AS “Augstsprieguma tīkls” and LITGRID AB and is effective as of January 1st, 2015.

Under this agreement:

  1. The Baltic electricity systems (Estonia, Latvia and Lithuania) constitute as a Baltic Coordinated Balance Area (“Baltic CoBa”).
     
  2. Elering acts as the Settlement Coordinator. This means that Elering is responsible for compiling the Baltic CoBa settlement reports and for submitting the Baltic CoBa data to the Open Balance Provider. Each TSO is responsible for the accuracy of the data concerning their own Balance Area.
     
  3. The accounting period is one calendar month and the settlement reports are drawn up in Central European time. The invoicing is settled between the Settlement Coordinator and Open Balance Provider.
     
  4. The Open Balance Provider submits the sales and purchase prices for imbalance energy for the next month by e-mail no later than on the 25th calendar day of the previous month. The imbalance prices are differentiated according to time (daytime – nighttime, business day – weekday) and the amount of imbalance (step I, step II, step III).
     
  5. The imbalance prices for the sale and purchase of imbalance energy provided by the Open Balance Provider shall reflect Russian market price, infrastructure fees, capacity fees, transit payments and any other grounded costs of the Open Balance Provider.
     
  6. The Settlement Coordinator compiles and submits the monthly settlement report and the corresponding acts no later than on the 5th business day after the end of the respective settlement month.

The Baltic TSOs have signed an additional agreement on the unified method for allocating imbalances and data exchange. 

Under this agreement:

1. Each TSO submits the settlement data concerning their Balance Area for the preceding trading day by settlement periods specifying the following information:

  • Fixed AC cross-border deliveries ( Elspot + Elbas)
  • Activated AC cross-border balancing deliveries and emergency reserves
  • Measured AC cross-border deliveries by metering points
  • AC system imbalance.

2. The Settlement Coordinator calculates and submits the imbalance of the Baltic CoBa and the distribution of imbalance costs by settlement periods to the other TSOs.

3. In the event of corrections or amendments to the data, each TSO shall update the relevant settlement data and submit it to the other TSOs as soon as possible. The Settlement reports are deemed final on the 3rd business day after the end of the respective settlement month.

4. The accounting period is one calendar month. The settlement reports are drawn up in Central European time and the imbalances are calculated with kWh accuracy.

5. The Settlement Coordinator compiles the monthly settlement reports and the corresponding acts no later than on the 3rd business day after the end of the respective settlement month.

Cost allocating and the open supply price for each separate Baltic Balance Area is set as:

  • The Baltic total imbalance cost for not netted imbalance, which is settled with the Open Balance Provider, allocated between the TSOs in proportion to the amount of a Balance Area’s share of its imbalance, which is in the same direction in relation to the imbalances of the other Balance Areas. 
     
  • If the imbalance of at least one Balance Area is in the opposite direction in relation to the other Balance Areas, then the corresponding TSO purchases or sells its Balance Area imbalance to the other TSOs at a price which is set as the arithmetic average of the Estonian, Latvian and Lithuanian Elspot price.
     
  • The final open supply price for each Balance Area is set with the aforementioned components – the weighted average cost for not netted imbalance energy and netted imbalance energy.

 

The Russian electricity system’s representative has given INTER RAO Lietuva the power of attorney to act as the Open Balance Provider in the Agreement on the Sale and Purchase of Imbalance Energy in the Baltic Electricity System.

This Agreement has been signed by AB “INTER RAO Lietuva”, Elering AS, AS “Augstsprieguma tīkls” and LITGRID AB and is effective as of January 1st, 2015.

Under this agreement:

  1. The Baltic electricity systems (Estonia, Latvia and Lithuania) constitute as a Baltic Coordinated Balance Area (“Baltic CoBa”).
     
  2. Elering acts as the Settlement Coordinator. This means that Elering is responsible for compiling the Baltic CoBa settlement reports and for submitting the Baltic CoBa data to the Open Balance Provider. Each TSO is responsible for the accuracy of the data concerning their own Balance Area.
     
  3. The accounting period is one calendar month and the settlement reports are drawn up in Central European time. The invoicing is settled between the Settlement Coordinator and Open Balance Provider.
     
  4. The Open Balance Provider submits the sales and purchase prices for imbalance energy for the next month by e-mail no later than on the 25th calendar day of the previous month. The imbalance prices are differentiated according to time (daytime – nighttime, business day – weekday) and the amount of imbalance (step I, step II, step III).
     
  5. The imbalance prices for the sale and purchase of imbalance energy provided by the Open Balance Provider shall reflect Russian market price, infrastructure fees, capacity fees, transit payments and any other grounded costs of the Open Balance Provider.
     
  6. The Settlement Coordinator compiles and submits the monthly settlement report and the corresponding acts no later than on the 5th business day after the end of the respective settlement month.

The Baltic TSOs have signed an additional agreement on the unified method for allocating imbalances and data exchange. 

Under this agreement:

1. Each TSO submits the settlement data concerning their Balance Area for the preceding trading day by settlement periods specifying the following information:

  • Fixed AC cross-border deliveries ( Elspot + Elbas)
  • Activated AC cross-border balancing deliveries and emergency reserves
  • Measured AC cross-border deliveries by metering points
  • AC system imbalance.

2. The Settlement Coordinator calculates and submits the imbalance of the Baltic CoBa and the distribution of imbalance costs by settlement periods to the other TSOs.

3. In the event of corrections or amendments to the data, each TSO shall update the relevant settlement data and submit it to the other TSOs as soon as possible. The Settlement reports are deemed final on the 3rd business day after the end of the respective settlement month.

4. The accounting period is one calendar month. The settlement reports are drawn up in Central European time and the imbalances are calculated with kWh accuracy.

5. The Settlement Coordinator compiles the monthly settlement reports and the corresponding acts no later than on the 3rd business day after the end of the respective settlement month.

Cost allocating and the open supply price for each separate Baltic Balance Area is set as:

  • The Baltic total imbalance cost for not netted imbalance, which is settled with the Open Balance Provider, allocated between the TSOs in proportion to the amount of a Balance Area’s share of its imbalance, which is in the same direction in relation to the imbalances of the other Balance Areas. 
     
  • If the imbalance of at least one Balance Area is in the opposite direction in relation to the other Balance Areas, then the corresponding TSO purchases or sells its Balance Area imbalance to the other TSOs at a price which is set as the arithmetic average of the Estonian, Latvian and Lithuanian Elspot price.
     
  • The final open supply price for each Balance Area is set with the aforementioned components – the weighted average cost for not netted imbalance energy and netted imbalance energy.

 

Mille kohta sa infot otsid?

Kõik Hooldustööd Uudis Basic page Sõnastik Tiitellehed