🇱🇻🇱🇹🇪🇪 The Baltic Energy Shield: What It Looks Like and How Much It Costs
After leaving the BRELL power system in 2025, the Baltic states began building a multi-layer energy resilience structure — from battery storage parks to thermal energy storage.
Here is how the emerging Baltic energy shield is being built:
🇪🇪 Estonia
▪️ Hertz 1 — Kiisa
100 MW / 200 MWh
Developers: Evecon, Corsica Sole, Mirova
Technology: Wärtsilä grid-forming storage
Investment: €80–120 million
Status: Fully operational (2026)
▪️ Auvere Battery System
26.5 MW
Operator: Eesti Energia
Technology: Wärtsilä
Investment: €20–30 million
Status: Operational since 2025
▪️ Hertz 2 — Aruküla
~100 MW
Developer: Evecon
Investment: €70–110 million
Status: Under development (expected 2026)
🇱🇻 Latvia
▪️ Rēzekne & Tume BESS
60 MW / 120 MWh
Operator: Augstsprieguma tīkls (AST)
Technology: Fluence
Funding: EU synchronisation + state investment
Investment: €60–90 million
Status: Operational since 2025
▪️ Tārgale Wind-Linked Storage
10 MW / 20 MWh
Investment: €8–12 million
Status: Operational
▪️ Liepāja Energy Storage System (ESS)
100 MW / 200 MWh
Investor: NGEN Group (Slovenia)
Technology: Tesla Megapack
Investment: €80–120 million
Status: Under construction (2026–2027)
🇱🇹 Lithuania
▪️ Energy Cells Storage Network
200 MW / 200 MWh
Technology: Fluence + Rolls-Royce mtu EnergyPack
Funding: EU + state infrastructure
Investment: ~€100 million
Status: Operational since 2023
▪️ Anykščiai Hybrid Storage
65 MWh
Developer: European Energy
Investment: €20–35 million
Status: Commissioning phase (2026)
🔥 Additional Layer: Heat Storage
▪️ Utilitas Heat Storage — Tallinn
1100 MWh thermal storage
80 MW output
Investment: ~€8 million
➡️ Heat storage costs roughly 10x less than electrical batteries
➡️ Works alongside CHP, solar generation and power-to-heat balancing
💰 Estimated Cost of the Baltic Energy Shield
Current investment pipeline:
👉 €450–700 million
Projected market by 2030:
👉 €1–1.5 billion
The Baltic energy system is evolving into a layered resilience model:
▪️ Batteries — second-to-hour balancing
▪️ Thermal storage — daily optimisation
▪️ Gas generation — multi-day backup
▪️ Underground gas storage — seasonal security
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