Elering

Elering is the Estonian Transmission System Operator, owned 100% by the Republic of Estonia. It operates the high-voltage grid (110 kV and above), the cross-border interconnections (Estlink HVDC to Finland, 330 kV synchronous to Latvia — including a third interconnection commissioned 2019–2020), the Datahub through which all retail electricity-market data flows, and the imbalance-settlement clearinghouse for every Estonian BRP.

Unbundled from Eesti Energia in 2010

The company itself dates back to 1998 as OÜ Põhivõrk, an Eesti Energia operating unit. It was renamed Elering in 2009 and ownership-unbundled from Eesti Energia in January 2010 under the EU Third Energy Package. The two now sit on opposite sides of the market — Elering as neutral system operator, Eesti Energia as the largest market participant.

Operational scope

Elering is responsible for: balancing the Estonian control area in real time (procuring FCR, aFRR, mFRR from certified BSPs), settling imbalances financially with BRPs, certifying market participants, operating the cross-border allocation auctions, and running national emergency-response. Since 9 February 2025 — when the Baltic states left the Russian IPS/UPS grid — Elering has operated synchronously with Continental Europe.

Why Volton works closely with Elering

Every commercial activity Volton performs touches Elering: BSP certification (granted 2024), BRP balance agreement, Datahub integration for retail switching, imbalance settlement for the aggregated portfolio, aFRR bidding into the PICASSO platform via Elering's national gateway. The TSO is the counterparty for almost everything we do.