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Energy, RENEWABLE

200 MWp Liesti PV & BESS Project

YEAR

Project Development

Near to RTB

LOCATION

Liesti Romania

,

200 MWp Liesti PV & BESS Project

Project Overview

The Liesti PV & BESS Project, located in Liesti, Romania, integrates a 200 MWp photovoltaic (PV) system with a 100 MW standalone battery energy storage system (BESS). This hybrid project enhances grid reliability, supports renewable energy integration, and leverages multiple revenue streams

Technical Specifications

  • Location: Liesti, Romania
  • Capacity: 200 MWp (PV) + 100 MW (BESS)
  • Storage Duration: 2-4 hours (200-400 MWh for BESS)
  • Type: Hybrid PV + Standalone BESS
  • Grid Connection: 220 kV high-voltage connection to Transelectrica’s network
  • Battery Type: Lithium-ion (LFP chemistry for safety and longevity)
  • Panel Type: High-efficiency monocrystalline solar panels
  • Land Area: 300 hectares (secured through rental agreements)
  • Inverter Technology: Advanced string inverters with 98.5% efficiency
  • Cooling System: Liquid-cooled for battery thermal management
  • EMS Software: Proprietary energy management system for real-time optimization

System Applications

  • Energy Arbitrage: Store low-cost solar energy during off-peak hours and sell during peak demand.
  • Frequency Regulation: Provide fast-response ancillary services to maintain grid frequency.
  • Grid Stability: Mitigate voltage fluctuations and support black-start capabilities.
  • Peak Shaving: Reduce demand charges by discharging during peak load periods.
  • Renewable Integration: Smooth intermittent PV output with battery storage.
  • Capacity Market Participation: Secure revenue through Romania’s capacity market mechanisms.

Project Status

Current Stage: Pre-construction (Ready to Build)

  • Solution Study: Scheduled for completion in Q2 2025, covering technical design and grid integration.
  • Land Acquisition: 300 hectares secured via long-term rental agreements.
  • Permitting: Environmental and construction permits in progress, leveraging Romania’s streamlined process.
  • Grid Connection: Application submitted to Transelectrica for 220 kV connection, with connection fee guarantee paid.
 

Next Milestones:

  • Q3 2025: Finalize EPC contracts and begin site preparation.
  • Q4 2025: Commence installation of PV panels, battery modules, and electrical infrastructure.
  • Mid-2026: Target grid connection and testing phase.
  • Q3 2026: Achieve commercial operation date (COD).

Strategic Importance

  • Grid Support: Enhances Romania’s National Energy System, addressing the 4,000 MWh storage need.
  • Policy Alignment: Supports Romania’s 38.3% renewable energy target by 2030 and €150M Modernization Fund for BESS.
  • Local Impact: Creates jobs and leverages local supply chains in Liesti.
  • Revenue Streams: Combines energy arbitrage, frequency regulation, and capacity market participation.
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