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The imbalance prices in the Baltics 🇱🇻🇱🇹🇪🇪 have been unusual for a while, but the last couple of weeks have been exceptional💰 Estonia’s local marginal price for manually activated frequency restoration reserves (mFRR) showed anomalous volatility: –4473 EUR/MWh on Sunday, Aug 3 2025 +9999 EUR/MWh on Monday, Aug 4 2025 between 19:15–19:30 –15 EUR/MWh in the next quarter-hour Such fluctuations are far outside the typical range seen in mFRR market, and according to Elering, are mainly linked to offers from a single Latvian market participant, so Elering has raised the issue with Augstsprieguma tīkls AS (Latvia’s TSO) and market supervision. Elering explains that although there are sufficient total reserves, the scarcity of divisible bids means the system operator sometimes has to activate costly offers, which increases volatility. Estonia’s Competition Authority has stated that any potential market manipulation here falls under Latvia’s jurisdiction, with ongoing cross-border regulatory cooperation. The joint Baltic frequency reserves market, launched in February 2025 ahead of desynchronization from the Russian grid, is designed to keep the system frequency at 50 Hz. This raises the question: Does the Baltic reserve market need tighter supervision and control mechanisms?

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