Coordinated Balancing Area (CoBA)
A Coordinated Balancing Area (CoBA) is a group of TSOs that cooperate on the exchange of balancing services, sharing of reserves and the imbalance-netting process. The Baltic CoBA — Estonia (Elering), Latvia (AST), Lithuania (Litgrid) — runs a joint regulating market and coordinated balance management; the joint Baltic balance settlement model has been operational since January 2018. CoBAs are the cooperation layer below the EU balancing platforms (MARI, PICASSO) and above each TSO's LFC area; the framework is set out in Title V of EBGL Regulation (EU) 2017/2195.
A Coordinated Balancing Area (CoBA), called Baltikumi koordineeritud bilansipiirkond in the Estonian electricity-market handbook, is a group of TSOs that cooperate on the exchange of balancing services, sharing of reserves and the imbalance-netting process. The Baltic CoBA — Estonia (Elering), Latvia (AST) and Lithuania (Litgrid) — runs a joint regulating market and coordinated balance management. CoBAs are the cooperation layer that sits underneath the EU balancing platforms (MARI, PICASSO) and above each TSO's own LFC area.
EBGL framework
CoBAs are the cooperation pattern envisaged by Title V of the Electricity Balancing Guideline (Reg (EU) 2017/2195), which sets out how TSOs cooperate on the exchange of balancing energy and capacity. Article 33 governs the cross-border exchange of balancing energy; subsequent articles cover the exchange of balancing capacity, sharing of reserves and the imbalance-netting process. Each cooperation submits its proposal to the relevant national regulators for approval — in the Baltics: Konkurentsiamet (Estonia), SPRK (Latvia) and VERT (Lithuania).
Baltic CoBA milestones
Per Elering's electricity-market handbook, the joint Baltic balance-settlement model has been in place since January 2018, with coordinated Baltic procurement of balancing capacity scaling through 2022–2024. The synchronisation reset of 2025 — desynchronisation from the Russian IPS/UPS grid on 8 February and resynchronisation with the Continental European grid on 9 February — turned the three Baltic TSOs into a single LFC block, with the Baltic CoBA layer providing the market mechanics on top. Estonia joined the EU mFRR platform MARI on 9 October 2024 and the aFRR platform PICASSO on 9 April 2025.
CoBA vs LFC block vs synchronous area
These three terms are easy to confuse. An LFC area is the area one TSO controls (Elering controls one LFC area covering Estonia). An LFC block groups LFC areas that share frequency-restoration responsibility — the Baltic LFC block contains all three Baltic LFC areas. A CoBA is a market construct: a set of TSOs that exchange balancing services together. The synchronous area is the physical interconnected grid; since 9 February 2025 the Baltic states are part of the Continental European synchronous area. CoBA membership does not require the same synchronous area, but the Baltic CoBA happens to align with the Baltic LFC block, which is one slice of the Continental synchronous area. See also: Baltic Capacity Calculation Region.
Where you see this in Baltic data
BTD reports tagged "Normal activations" and "Demands" reference "Baltic CoBA balancing purposes" — activations the three TSOs did jointly to minimise the combined Baltic system imbalance. Special activations (countertrade, system services) sit outside the CoBA scope. Joint Baltic BBCM procurement results show on the mFRR clearing-price chart — when one Baltic price diverges sharply from the others, that is typically the moment a CoBA-internal cross-border constraint binds.
Sources
EBGL Title V (cooperation between TSOs) · Elering: Elektrituru käsiraamat · ACER: Balancing market rules · Baltic Transparency Dashboard
Frequently asked
- What is a Coordinated Balancing Area?
- A CoBA is a group of TSOs that cooperate, under Title V of the EU Electricity Balancing Guideline (Reg 2017/2195), on the exchange of balancing services, sharing of reserves and the imbalance-netting process. Members exchange balancing energy across borders to minimise their combined system imbalance and present a single demand to the EU activation platforms (MARI, PICASSO).
- Which countries are in the Baltic CoBA?
- Estonia (Elering), Latvia (AST) and Lithuania (Litgrid). Per Elering's electricity-market handbook, the joint Baltic balance settlement model has been operational since January 2018; coordinated capacity procurement scaled through 2022–2024; on 9 February 2025 the three TSOs synchronised with the Continental European grid as a single LFC block. Estonia joined MARI on 9 October 2024 and PICASSO on 9 April 2025.
- How is a CoBA different from an LFC block or synchronous area?
- An LFC area is the area one TSO controls; an LFC block groups LFC areas with shared frequency-restoration responsibility; a synchronous area is the physically interconnected grid. A CoBA is a market-organisational construct on top of those — the same TSOs can be in different combinations. The Baltic CoBA happens to align with the Baltic LFC block.
- What does "Baltic CoBA balancing purposes" mean in BTD reports?
- It means activations the three Baltic TSOs did jointly to minimise the combined Baltic system imbalance — the standard "normal" use of mFRR and aFRR. Activations done for system services or countertrade fall outside CoBA scope and are reported separately as "special activations".