Natural Gas Completed Featured

LNG Terminal Alexandroupolis

A strategic floating LNG terminal enhancing energy security in Southeast Europe, with capacity to supply natural gas to Greece, Bulgaria, and the Western Balkans.

Alexandroupolis, Greece
2023
Gastrade S.A.

Project Image

5.5 bcm
Annual Capacity
Yearly natural gas throughput
170,000 m³
FSRU Storage
Floating storage unit capacity
28 km
Pipeline Length
Subsea and onshore pipeline
3
Countries Served
Greece, Bulgaria, Western Balkans

Project Overview

The Alexandroupolis Independent Natural Gas System (INGS) represents a cornerstone of regional energy security. This floating LNG terminal provides diversified gas supply routes for Southeast Europe, reducing dependence on traditional pipeline imports.

Our engineering team delivered critical design and supervision services for both the marine terminal and the 28-kilometer pipeline connecting to the national transmission system.

Strategic Importance

The terminal serves as a key entry point for LNG cargoes from global suppliers, offering:

  • Supply Diversification: Access to worldwide LNG markets
  • Regional Hub: Gateway for gas flows to Bulgaria and the Western Balkans
  • Energy Security: Alternative supply route independent of existing pipelines

Technical Achievement

FSRU Integration

The project utilizes a converted LNG carrier as a Floating Storage and Regasification Unit, capable of:

  • Receiving LNG carriers up to Q-Max size
  • Continuous regasification at 5.5 billion cubic meters annually
  • Emergency send-out capacity for peak demand periods

Pipeline Engineering

Our team designed the subsea and onshore pipeline system including:

  • 24-inch diameter high-pressure pipeline
  • Horizontal directional drilling under environmentally sensitive areas
  • Advanced cathodic protection system for corrosion prevention

Environmental Considerations

The project incorporated extensive environmental protection measures:

  • Marine mammal monitoring during construction
  • Seabed habitat restoration post-installation
  • Zero-discharge policy for terminal operations

Challenges & Solutions

Deep Water Mooring System

The terminal location required innovative mooring solutions for the FSRU in challenging sea conditions.

Solution

Designed a spread mooring system with 12 anchor points capable of withstanding extreme weather events.

Cross-Border Coordination

The project required coordination with multiple national regulatory bodies and international stakeholders.

Solution

Established a dedicated coordination team managing permits and approvals across three jurisdictions.

Project Gallery

Project Details

Size
5.5 bcm/year
Capacity
FSRU 170,000 m³
Budget
€380 million
Duration
48 months
Client
Gastrade S.A.
Contractor
Consolidated Contractors Company

Services Provided

  • Process Engineering Design
  • Marine Engineering Studies
  • Pipeline Route Optimization
  • Safety & Risk Assessment
  • Commissioning Support

Tags

LNG natural gas energy security FSRU infrastructure

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