A. PROJECTS UNDER CONSTRUCTION
Projects for the Expansion of NNGS to new areas / new markets
High Pressure pipeline to West Macedonia
Project description
The project is included to support the decarbonization policy introduced by the Hellenic Republic and it concerns the extension of the existing NGTS via a new pipeline branch up to the region of West Macedonia. The Project consists of
- 157 km Natural Gas High Pressure pipeline.
- the Kardia Metering Station to supply the district heating installations for the cities of Kozani, Ptolemaida and Amyntaio, as well as line valves to supply other consumption in the region.
The Metering Station is designed with a total capacity of 50.000Nm3/h, in a configuration of (1+1) – one metering stream in operation and one stand-by.
The project’s design has been aligned with the company’s strategy for energy transition and more specifically it will be constructed to be compatible for H2 transportation up to 100%.
DESFA has applied for inclusion in the NSRF 2021-2027.
Benefits
- The supply of new areas with natural gas ensuring new Users’ potential access decarbonization of Greek System
New jetty for small-scale LNG in Revithoussa
Operational Programme
- Competitiveness, Entrepreneurship and Innovation PA 2014-2020
Public Expenditure
- 8,885 m€ (PA2014-2020)
Fund
European Regional Development Fund (ERDF)
Project description
The project will be an implementation of the ongoing studies under POSEIDON MED II.
POSEIDON MED II, under the auspices of the INEA (Innovation and Network Executive Agency), is part of the necessary steps towards adopting liquefied natural gas as a marine fuel in the Eastern Mediterranean.
The new jetty is planned to be constructed in the northeastern part of Revithoussa and will serve the operation of the loading to small ships (1.000 m3 and up to 20.000 m3). The smallest of them will supply boats (cruisers, containerships, Ro-Pax), to the port of Piraeus. The larger ones will supply satellite LNG storage and distribution stations to other ports in Greece or abroad or will operate virtual pipelines to islands.
Benefits
- Supply of new areas/markets
- Opening of a new gas market sector for Greece (bunkering)
- Substitution of oil with LNG in marine transport
M/R Station at the prefecture of Aspros
Project description
The project consists of an M/R Station at the prefecture of Aspros in order to supply gas through a pipeline to the cities of Skidra, Edessa, Naousa, Veria & Gianitsa.
The project is designed to be 100% H2 ready.
Benefits
- Supply of new areas
M/R Station in the region of Perdikas/ Eordea
Project description
The project consists of an M/R Station at the region of Perdika/ Eordeas in order to supply gas through a pipeline to the cities of West Macedonia (Kozani, Prolemaida, Florina and Amyntaio).
The project is designed to be 100% H2 ready.
Benefits
- Supply of new areas
Drymos/Liti M/R city gate station
Project description
Drymos Metering / Regulating Station will be fed from the National Natural Gas Transmission System (NNGTS) through the existing main pipeline with Hot-Tapping Method.
The new M/R station’s maximum capacity will be 18.000Nm3/h and it will be constructed in two phases: Phase 1: 9.000 Nm3/h, Phase 2: 18.000 Nm3/h.
Benefits
- Supply of new areas
Temporary supply of Aspros and Naousa through ssLNG Installations
Project description
The project consists of the necessary ssLNG installations for the supply of the areas of
- Aspros in West Macedonia
- Naousa in Central Macedonia
temporarily until the region is supplied from the HP Pipeline to West Macedonia.
The implementation will be realized with modular small-size tanks and gasifiers, which are easy to relocate, thus maximizing possible synergies, and minimizing relevant costs.
Benefits
- Supply of new areas
Korinthos M/R city gate station
Project description
The investment consists of one Metering Regulating city gate station at the area of Korinthos including
- construction of Metering and Regulating skid,
- construction of auxiliary installations,
- construction of steel shelter for the protection of M/R skid (Skid Shelter),
- as well as connection with the existing NNGTS pipeline.
The capacity of the station has been estimated at 10.000 Nm3/h with a (1+1) configuration with provision for expansion to totally 20.000 Nm3/h with a (2+1) configuration.
Benefits
- Supply of new areas
Projects for the Increase of capacity & security of supply of NNGS
Compressor Station in Ampelia
Operational Programme
- Competitiveness, Entrepreneurship and Innovation PA 2014-2020
Public Expenditure
- 30,1 m€ (PA2014-2020)
Fund
European Regional Development Fund (ERDF)
Project description
The compressor station will include two compressor units plus one spare with size (2+1) x 10 MW. Furthermore, the station is designed to provide also the possibility of compression in reverse flow.
The Compressor is Gas Turbine Driven and will be able to operate with up to 10% hydrogen.
Benefits
- Efficiency of NNGS,
- Effective operation in respect to preventing congestion
Booster Compressor for TAP in Nea Messimvria
Project description
The project concerns the installation of a new Compressor Station in order to supply the Trans Adriatic Pipeline with delivery pressure significantly higher than the NNGS operating pressure.
The characteristics of the compressor station were preliminarily identified as follow:
Installation of 2 units of 1,1 MW and 1 unit of 3,3 MW, with no spare capacity. This configuration can cover a widespread range of flows, from very low up to the 10 million Nm3 per day.
The Compressors will be Electric Motor Driven Variable Speed.
Benefits
- Efficiency of NNGS,
- Effective operation enabling transit flows
Compression Station in Komotini
Project description
The Project is implemented through a two-phase procedure:
- In phase A, three compressor units of 8,2MW each will be installed with a configuration of 2+1 (2 in operation and one stand-by unit), \
- In phase B an additional unit (4th CS unit) with the same characteristics will be installed; the relevant final configuration of the station will be 3+1 (3 in operation and one stand-by unit).
Benefits
The project aims at increasing the Transmission Capacity of NNGS and to enable the supply of larger natural gas quantities to the Greek market as well as to transit gas to European markets via NNGS to the region of Komotini and/or via new gas projects which are foreseen to be developed in the region (IGI, IGB).
Regulating station Komotini
Project description
The new requirements for supply of the IGB pipeline for a period of ten months without the operation of the Compressor Station at Komotini, requires the construction of a complex regulating station which shall be installed at the existing installations of LVS Komotini.
Benefits
Effective operation in order to regulate the flow and pressure between the parts of DESFA network East and West of LVS Komotini so that they can operate at different pressure levels and allow the supply of IGB network.
Projects for the interconnection of NNGS with other interconnected systems (connection/development projects)
Pipeline Nea Messimvria – Evzoni/ Gevgelija and Metering Station
Project description
The Greek Part of the project comprises of:
- Approx. 55 km pipeline of 30’’ in with 80 barg design pressure and 66.4 barg maximum operating pressure starting from Nea Messimvria (downstream of the current compressor station) an ending to the Border Station U-7550 which belongs to the administrative limits of the Community of Evzoni, eastern of river Axios.
- A Border Metering Station (BMS) in the interconnection area (estimated capacity 430.000 Nm3/h), with a central bypass arrangement of the station at 50% of the final capacity.
Benefits
- Development SEE market,
- increase of usage of NNGS
The project aims at the interconnection of natural gas transmission systems of Greece and North Macedonia which will enhance the diversification of supply sources for North Macedonia. The latter one is currently solely dependent on the supply of gas from its congested interconnection with Bulgaria.
Connection with the FSRU of Alexandroupolis
Project description
The Project concerns the construction of a Border Metering / Regulating Station for the receipt, control of the flow and invoicing of the transferred quantities of natural gas from the point of entry, downstream of the scraper station of the Connected System.
The new Border M/R Amphitrite Station will have a total capacity of 865.000 Nm3 /h, design pressure 110 barg, with arrangements of valves station of inlet and outlet E.S.D. (with bypass arrangement) and central bypass arrangement of the M / R station at 50% of the final capacity.
Benefits
- Enabling access to new Users
Connection with THERMOILEKTRIKI KOMOTINIS Power Plant to the NNGTS
Project description
The project comprises the construction of a new 1,5km pipeline that will be connected to the branch of ‘’Komotini-Alexandroupoli’’ with the method of hot-tapping and construction of a one-line valve station.
Benefits
- Enabling access to new Users
Connection of the new Power Plant of Thermoelectriki up to the NNGTS West of LVS Komotini (pipeline from the M-station up to the 24’’ network)
Due to the requirements for the supply of IGB without the use of the Compressor and to achieve the required hydraulic balance of the network, Thermoelectriki Power station will have to be supplied with natural gas alternatively from the 24’’ Desfa network West of Komotini.
For this new connection to be implemented, a connecting pipeline with a significantly additional length has to be constructed, from the new Metering Station of the Thermoelectriki project up to the alternative connection West of Komotini.
Connection with ELPEDISON Power Plant to the NNTGS
Project description
This project aims to install one Metering Station in the west area of Thessaloniki to supply natural gas to the new Power Plant of ELPEDISON. The project comprises the construction of a new 0,3km pipeline that will be connected to the branch of ‘Pentalofos – Diavata’’ with the method of hot-tapping, the construction of a one-line valve station, construction of one Metering station with two metering skids, 1 working + 1 stand by, with a capacity of 130.000 Nm3/h.
Benefits Enabling access to new Users
Projects for the Improvement / modernization/ maintenance of NNGS
Boil-off gas compressor at Revithoussa
Operational Programme
- Competitiveness, Entrepreneurship and Innovation PA 2014-2020
Public Expenditure
- 6.4 m€ (PA2014-2020)
Fund
European Regional Development Fund (ERDF)
Project description
In order for DESFA to manage with the best possible way the produced boil-off gases (BOG) in the LNG Terminal of Revithoussa from the cryogenic facilities (2nd upgrade) as well as from the unloading/ loading phase and mainly to avoid the combustion of the gases in the flair of the facility in the case of no send-out operation, DESFA will install a new compressor station for BOG so as to increase the pressure and inject them to the national natural gas system.
Benefits
- Enhance Efficiency of NNGS and effective operation
- Decrease LNG losses – energy saving
- Environmental benefit by eliminating the carbon dioxide emissions during the period of non- operation of the Terminal.
Technical Training Centre in N. Mesimvria
Project description
The project concerns the construction of a Training Center for the theoretical and practical practice of natural gas technicians. The development of such infrastructure will be the first in the Balkan region. It will be used primarily for the needs of the DESFA staff, but it creates an opportunity of additional services for the training of personnel of other TSOs and DSOs, contributing to the reduction of costs for the Greek network users.
Benefits
- Efficiency of NNGS,
- Effective operation
Replacement of Metering and Supervision/ Control systems at NNGTS M and M/R stations of NNGTS
The project concerns the replacement of the Measurement Management and Supervision / Control Systems in twenty-four (24) existing Metering (M) and Metering / Regulating (M / R) Stations Αποδοτικότητα ΕΣΦΑ.
Benefits
- Efficiency of NNGS,
- effective operation
Upgrade of LNG and O&M Facilities for energy saving
The aim of the project is the energy upgrading of the Building and Electrical / Mechanical Facilities of the Operation and Maintenance Centers to achieve energy savings by the Energy Performance Regulation of buildings “KENAK” (Government Gazette Β 2367/12.07.2017).
Relocation of Ampelia – Karditsa – Trikala Pipeline
The need for relocation for a section of the Ampelia-Karditsa-Trikala Pipeline occurs due to the final location of the new project of Ampelia Compressor Station.
Anti-Flood works and Damage Restoration in the Ampelia Station
The proposed project concerns the restoration of damages caused in the area of Ampelia before the construction of the planned Compressor Station, due to extensive floods that occurred and the installation of an anti-flood network that will mitigate any future flood damages.
B. PROJECTS UNDER DESIGN / TENDER PROCEDURE
Projects for the Expansion of NNGS to new areas / new markets
High Pressure Pipeline to Patras
In line with the relative request of the Western Greece Region, the project concerns the connection of the city of Patra and the Industrial Area (VIPE) of Patras with the NNGS, with provision for future extensions to other cities of the Western Greece Region.
The project consists of
- a high-pressure pipeline, of approximately 130 km and 20” in diameter, starting from a suitable point on the HPP branch of Megalopolis.
- necessary infrastructure and a Metering/ Regulating station. The M/R Station will be designed with an initial capacity of 27.500Nm3/h with a configuration of (1+1) – one metering/regulating stream in operation and one stand-by, with future provision for expansion to max capacity of 55.000 Nm3/h, when this will be justified demand-wise by the downstream connected system.
The project is designed to be 100% H2-ready.
Benefits
- the supply of new areas with natural gas
- the ensuring of new Users’ potential access
M/R Station to Veroia
The purpose of the project is the installation of a Metering/Regulating Station (along with the necessary building facilities and supporting equipment) in the extended area of Veroia for the supply with natural gas.
The M/R station will be connected to the 10’’ branch Arsenio-Veroia which is part of the HPP to West Macedonia (already planned project) upstream and downstream with the expected distribution network of DEDA.
The project is designed to be 100% H2 ready.
M/R Station to Naousa
This new M/R Station U-9130 concerns the installation of a Metering/Regulating Station at the Kopanos area of Νaousa for the supply with natural gas.
The M/R station will be fed through LVS U-9120 of the 10“branch Arsenio-Veria, which is part of the 30’’ HHP to West Macedonia.
The M/R Station will be designed with a total capacity of 6.000Nm3/h and outlet pressure of 16,7 barg, (6.000 Nm3/h, configuration 1+1 – one metering/regulating stream in operation and one stand-by), including as well as skid shelter, Control Room and RCC building Station and supporting equipment.
The project is designed to be 100% H2 ready.
Argos/Nafplio M/R city gate station
The investment consists of one Metering Regulating city gate station including the construction of Metering and Regulating skid, construction of auxiliary installations, construction of steel shelter for the protection of M/R skid (Skid Shelter), as well as connection with the existing NNGTS pipeline.
Projects for the Increase of capacity & security of supply of NNGS
Duplication of Karperi – Komotini HP branch
The proposed project refers to the construction of a 30’’, 215 km 100% H2-ready pipeline parallel to the existing network from Karperi to Komotini.
The project is a priority project for DESFA since it will increase the ability of the NGTS to accommodate additional gas flows between the Northern and the Southern parts of the System.
Duplication of the HP branch Patima – Livadeia
The project includes the duplication of approximately 100km of the main HP pipeline of NGTS with a 100% H2 ready, 30’’ diameter pipeline, from Megara up to Livadeia.
The project aims to reduce the pressure drop in the main pipeline, when the flow of gas is from the South to the North, and thus will increase the pressure level at Ampelia CS upstream side.
Projects for the interconnection of NNGS with other interconnected systems (connection/development projects)
Metering and Regulating Station for connecting with Dioryga Gas FSRU
Project Description
The Project includes a new Metering/Regulating (M/R) Station where the natural gas pipeline that Dioryga Gas plans to construct, will end up. This new M/R Station will be located near the existing M/R Stations for the supply of MOTOR OIL HELLAS (MOH) refinery and the Korinthos Power S.A. Power Plant, in the area of Agioi Theodoroi in Corinthia. This new M/R station will have a capacity of 490.000 Nm3/h and a central bypass arrangement of the M / R station at 50% of the final capacity.
Upon the completion of the project, a new Entry Point “DIORYGA GAS” will be created, which will satisfy Dioryga Gas’ request for a total natural gas delivery of 11,76 million Nm3/d. The M/R station’s maximum output pressure will be equal to 66,4 barg.
Benefits
- Enabling access to new Users
Connection of “Alexandroupolis SA” power station with NNGS and Metering Station
The project will allow the connection of the ” Alexandroupolis SA ” power plant with the NNGS, to operate a new gas turbine unit for the production of electricity with a capacity of 840 MWe.
The project is designed to be 100% H2 ready.
Connection of ” Larissa Thermoelectriki” power station with NNGS and Metering Station
The project will allow the connection of the “Larissa Thermoelectriki” power plant with the NNGS, to operate a new gas turbine unit for the production of electricity with a capacity of 872.6 MWe.
The project is designed to be 100% H2-ready.
Projects for the Improvement / modernization/ maintenance of NNGS
Expansion and Upgrade of M/R Stations of Exit Point to Distribution Network ‘Athens
The Project aims to improve the smooth operation of the NNGTS by servicing an Exit Point connected to the Distribution Network and at the same time servicing the expected increase in Natural Gas consumption in the domestic sector.
Construction of a new Metering & Regulating Station in Markopoulo Site to replace the existing temporary M/R
The Project aims to improve the smooth operation of the NNGTS in servicing an Exit Point connected to the Distribution Network.
Necessary modifications to Nea Messimvria M/R Station for the interconnection of NNGTS with TAP, for Reverse Flow Operation
The project concerns the modifications of Nea Messimvria M/R station in order to supply the compressed natural gas quantities from National Natural Gas System to Trans Adriatic Pipeline system, with delivery pressure significantly higher than the NNGS operating pressure.
C. CRITICAL COMPLETED PROJECTS
Metering Regulating station at Nea Messimvria for the interconnection with TAP
Operational Programme
- Competitiveness, Entrepreneurship and Innovation PA 2014-2020
- Connecting Europe Facility (CEF) funding instrument for Projects of Common Interest.
Budget : 12m€
Public Expenditure
- 5,44m € (PA 2014-2020)
- 0,24 m € (CEF)
Fund
European Regional Development Fund (ERDF)
Project description
- Οne (1) Tie In Point between NNGS and TAP pipeline bidirectional.
- The project includes a Metering/Regulating station, a small connecting pipeline (aprox.250m) between the two systems and purchase of land for the M/R. The Station has been designed for unmanned operation with a technical capacity of 10 mil. Nm3/ day- capacity 3 Nbcm/y – 417,000 Nm3/h.
- Gas Flow from TAP to NNGTS due to the difference in the operating pressure,
Benefits
The project is of great importance as it is expected to enhance the flexibility of the NNGTS and the security of supply
2nd Upgrading of the liquefied Natural Gas Terminal in Revithousa
Operational Programme
Competitiveness, Entrepreneurship 2007-2013 & Competitiveness, Entrepreneurship and Innovation 2014-2020
Eligible Budget
131.155.378,15€
Public Expenditure
- A’ Phase (2007-2013): 14.028.614,71€
- Β’ Phase (2014-2020): 31.875.767,64€
Fund
European Regional Development Fund (ERDF)
Project description
The Project includes
- the construction of a 3rd LNG Tank of 95.000 m3,
- the upgrading of gasification rate,
- the upgrading of marine to accommodate larger ships,
- the upgrading of Ag. Triada Metering Station.
Benefits
The project is of great importance as it is expected to:
- increase the operational flexibility of the LNG Terminal Station
- improve the level of security of supply in case of interruption of the northern entry points
- allow the reception of LNG carriers with a capacity of up to 260,000 m3 while the current capacity is up to 140.000 m3 resulting in the activation of more LNG carriers.
Additionally, the project is necessary for the hydraulic stability of the Transmission System, since the other two entry points to the NNGTS are located at the northern border of the country and the consumption is concentrated in the southern part.
Truck Loading Pilot (first) Station
Operational Programme
- Competitiveness, Entrepreneurship and Innovation PA 2014-2020
- Poseidon Med II
Budget : 6,5m€
Public Expenditure
- 3,03 m€ (PA2014-2020)
- 0,20 m€ (Poseidon Med II)
Fund
European Regional Development Fund (ERDF)
Project description
The project includes the installation of a pilot truck loading station on Revithoussa Island. The station will have one loading bay for trucks loading with a capacity of 50 m3 and loading flow of 100 m3/h .It will also include provision for a future second bay The project also includes:
– Measurement of LNG loaded via weighbridge
– Control of the truck loading station from the LNG Terminal Control Room and DESFA SAP system for the issuance of invoices and other required documentation
– Traffic arrangements within DESFA property as well as on the access road to Revithoussa.
– Expansion of the existing jetty at Perama Megaridos port and/or other ports that are going to be used for LNG Trucks transfer to and from Revithoussa Terminal Station
Benefits
- Increase gas penetration to the markets of Greece or abroad
- Supply of off grid customers (out of the gas network)
Development of LNG as alternative fuel in maritime transport
Upgrade of the supervision Control and Data Acquisition System (SCADA) for the main and backup dispatching Centers (Phase B)
Operational Programme
- Competitiveness, Entrepreneurship and Innovation PA 2014-2020
Budget : 1.9m€
Public Expenditure
- 0.97 m€ (PA2014-2020)
Fund
European Regional Development Fund (ERDF)
Project description
The Project includes the supply, installation and operation of new Supervisory Control & Data Acquisition System – SCADA for the main and back up dispatching center. The new system will provide to DESFA new management tools such as images, graphics, database, alarms, historical data etc.
It should be noted that the currently existing equipment is not supported anymore by the manufacturing company, which has no longer stock of spare parts. The investment is expected to upgrade the system capabilities (user-friendliness, better display parameters, and ease of designing new graphics images)
Benefits
Provision of high standard services
Upgrade of Nea Messimvria compressor station
Operational Programme
- Competitiveness, Entrepreneurship and Innovation PA 2014-2020
Public Expenditure
- 7,496 m€ (PA2014-2020)
Fund
European Regional Development Fund (ERDF)
Project description
The project included the installation of a 3rd compressor unit at Nea Messimvria with similar characteristics to the existing ones.
The installation of the 3rd compressor unit at Nea Messimvria, in combination with the planned compressor station at Ampelia, increases the total entry capacity of the entry points in the northern section of the NNGTS.
Benefits
- Efficiency of NNGS,
- effective operation in respect to prevent congestion
Installation of M/R Livadia
The aim of this project is to install one M/R City Gate Station in the greater area of Livadia, in order to supply the distribution networks (19barg MP) of Livadia city with natural gas
M/R Station at Distomo Viotias (AdG III)
The construction of the new ADG III (U-2840) M/ Station (U-2840) in the area of Distomo Viotia includes:
· the dismantling of the existing ADG III station (TM1 / TM5),
· the installation of the building infrastructure (RCC and Station Building),
· the construction of the Station with a capacity of 23,500 Nm3/ h.
The new Station will have a lightning protection and earthing system for all overground metal installations and the surrounding area will have roads, drainage, perimeter fencing and operating lighting
Metering station at Agios Nikolaos Viotia (AdG IV)
The aim of this project is to install Metering Station in the greater area “Aluminium of Greece-ADG” industry, to supply natural gas, the new installations of “New C.C.G.T. Agios Nikolaos II”.
Installation of M/R Kavala
The project refers to the installation of a M/R 70/19 Station in the area of Kavala line valve. The aim of the project is to supply with natural gas the city of Kavala and the nearby cities of Palaio and Eleftheroupoli.
High Pressure Pipeline from Mandra Attikis to the facility of EL.PE in Elefsina
The project scope includes
- the construction of a pipeline of 6.7 KM length and 10 inches diameter which will start from the line valve “Mandra” and following a route below the railway lines and the new national road of Athens – Corinth will end up in the facility of EL.PE. (Hellenic Petroleum).
- the Construction of the Metering Station to supply ELPE permises in Eleusina
Increment of the backup power availability at the Revithoussa LNG terminal
The project concerns the increment of the backup power availability at the Revithoussa LNG terminal, from 9MVA to 12MVA, using the existing PPC lines. The necessary actions for the increment concern mainly work carried out by HEDNO at the area of existing HV/MV Substation at Megara. All necessary works at the existing electrical installation will also be carried out
Upgrade of electrical and electronic equipment, billing system and equipment SCADA field in stations M/R of 1st generation (1995-2000)
The project involves the design, existing equipment dismantling, procurement, installation and commissioning of electrical and electronic equipment for 16 stations of NNGS of which the existing equipment for metering and managing invoicing and signaling has overpassed a 10-year operation period.
D. BIG PROJECTS UNDER FUTURE DEVELOPMENT
Duplication of Livadeia – Karperi HP branch and CSs
The project consists of the following indicative sub-projects, with an initial estimate of their dimensions:
- Part of the Karperi- Leivadia HP branch (of up to 340 km, maximum 30-inch pipeline)
- Upgrade of planned CS at Ampelia (addition of estimated capacity of up to 12 MW)
- Upgrade of CS at N. Messimvria (addition of estimated capacity of up to 21 MW)
- New CS Eastern branch (potential capacity of up to 18MW)
The project can be implemented on a fully scalable, modular and gradual basis to be further assessed following the outcome of a market test. To this end, the specifications of the project will be finalized following the conclusion of the market test, anticipated in 2024.