Romania’s BESS: Legal, Market, and Financing Update | October 2025

Introduction

Romania’s power system is entering an accelerated phase of transition. Rising PV and wind penetration is increasing intermittency, making Romania BESS 2025 solutions central to flexibility, congestion management, and frequency stability. By October 2025, multiple grid-scale projects moved from early-stage feasibility to ready-to-build (RTB), underwritten by executed connection contracts and verified technical solutions. The story of 2025 is the shift from pipeline aspiration to bankable assets.

Institutionally, the forthcoming auction-based allocation of connection capacity from January 2026 represents a step-change: moving from a first-come model to merit-based selection where execution readiness and guarantees determine access. For storage sponsors, this raises the bar—aligning engineering, permits, and finance—or yields their place to better-prepared bidders.

Legal and institutional framework

The EU’s internal electricity-market rules elevate non-fossil flexibility, including batteries, to a core decarbonization pillar. Romania is now translating these principles into actionable procedures that make Romania BESS 2025 investment possible at scale.

EU context and market access

Regulation (EU) 2019/943—reinforced by the 2024 reform—requires non-discriminatory participation of storage in energy, capacity, and ancillary-service markets. It encourages the removal of structural barriers and supports targeted measures where market signals are weak. In practice, this turns batteries from passive assets into active market participants able to bid across multiple products.

Romanian implementation & ANRE 53/2024

The Electricity Law no. 123/2012 and subsequent ANRE acts embed storage in the national architecture. The pivotal reform—ANRE Order 53/2024—introduces a transparent, competitive mechanism for allocating grid capacity to generation and storage projects >5 MW, effective for auctions held from 2026 onward. Transelectrica’s implementing procedure (approved October 2025) details auction design, eligibility, documentation, and reservation timelines, providing a procedural bridge from policy to bankability.

October 2025 market developments

October 2025 crystallized the investable thesis for Romania BESS 2025 with both international and domestic capital active:

• Platform acquisition (Repono): 202 MW / 404 MWh standalone BESS in Argeș County at RTB, backed by a 220 kV Pitești grid-connection agreement; part of a Romanian pipeline >1.4 GW.
• Asset rotation (R.Power): Sale process for a 200 MW / 400 MWh RTB BESS near Bucharest—evidence of deepening secondary-market liquidity.
• Utility engagement (ENGIE Romania): 5 MW / 10 MWh in Galați and 80 MW / 160 MWh in Sibiu, scheduled for 2026 construction—shift from pilots to programmatic rollout.
• Commissioning precedent (Monsson): First 24 MWh energized, as part of a planned 216 MWh system, building an initial O&M performance record.
• Electrica Group commitment: Plan for ~1 GWh across 15 sites, integrated with the utility’s 2030 strategy—one of the largest domestic BESS portfolios.

Mechanics of participation and revenue stacking

Romanian BESS assets monetize via stacked revenues: day-ahead/intraday arbitrage, balancing-market products (FCR/aFRR/mFRR), and—in time—new flexibility and reactive-power services aligned with EU rules. Two-hour systems remain the regional commercial benchmark, balancing capex and system value. As participation standards and liquidity improve, longer durations become attractive in nodes with congestion or curtailment risk.

Grid capacity allocation and connection firmness

From 2026, projects >5 MW must secure injection rights via auctions. Transelectrica will publish capacity zones tied to reinforcement plans, aligning TSO investment cadence with build-out. For financing, connection certainty is now a valuation driver: RTB assets with signed contracts command premiums; projects lacking firmness face discounts or delayed closings. Node-level studies (N/N-1) increasingly become lender prerequisites, especially in southern and south-eastern nodes.

Bankability considerations

Debt providers are moving toward limited-recourse structures (up to ~70–80% leverage) supported by contracted plus merchant cash flows. Credit packages emphasize throughput caps, degradation curves, availability SLAs, and settlement timing (aligned with OPCOM). Standardized collateral—assignments of receivables, step-in rights, and tighter balancing settlement—reduces counterparty risk. EU Modernisation Fund grants and multilateral green credit lines (EIB/EBRD) further enhance early asset financings, while a growing secondary market improves capital recycling.

Risk map

Outlook

Romania is entering the portfolio-consolidation phase for storage. With ANRE’s competitive allocation, credible sponsors, and maturing finance, Romania BESS 2025 is moving from experimental to essential. The policy imperative for 2026+: predictable auction rounds, transparent reinforcement roadmaps, and bankable ancillary products to sustain growth and integrate Romania into regional balancing markets.

About MHG & Contact

MHG Consulting advises sponsors, lenders, and utilities on storage strategy, auction readiness, bankability, and transaction support across CEE.

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