Hydro-pumped storage of Agios Georgios and Pyrgos, Municipality of Amfilochia, Greece

TERNA ENERGY is the promoter of the project Hydro-pumped storage Agios Georgios and Pyrgos in Amfilochia, for which has concluded an agreement (Grant Agreement) with the E.U. under the “Connecting Europe Facility – Energy” for the Action “Design and Environmental Impact Assessment of the PCI 3.24 – Hydro- pumped storage in Greece- Amfilochia”.

This project is a Greek Strategic Investment by decision of the Interministerial Committee for Strategic Investments (ΦΕΚ 1787Β/6-6-2012).

TERNA ENERGY S.A assigned PLANET S.A Consulting Company:

• as it was contracted on 06.03.2015, the development of the Main Design
• as it was contracted on 01.03.2016, the development of the Detailed Design

of the project with Title “Development and Monitoring services of Supporting Technical Studies for the Hydro-pumped storage projects “Agios Georgios” and “Pyrgos” in the Municipality of Amfilochia”.
The relevant Study of Hydraulic Works was assigned to the collaboration of the consultancy firms:

• “SOFIOS CONCSULTING ENGINEERS S.A.” and
• “ MAVRONIKOLAOY & Co O.A. HYDRETME”

To the SOFIOS S.A. firm was also assigned:

• The Geotechnical Investigation (For detailed technical characteristics, click here)
• The Geological Study
• The study of Main and Auxiliary E&M Equipment

Project Presentation Video

LOCATION

Alevrada, Prefecture of Aitoloakarnania, Greece

PROJECT PROMOTER

TERNA ENERGY S.A.

DESIGN STAGES – DEVELOPMENT TIME

• Engineering Report of Civil Works – 2015
• Final Design of Civil Works with Tender Documents – 2016

TECHNICAL CHARACTERISTICS

AGIOS GEORGIOS

• Upper Reservoir :
  • Type of Dam : Hardfill Dam
  • Total reservoir volume : 6,72 x 10⁶ m³
  • Effective volume : 5,08 x 10⁶ m³
  • Η = 55,30 m from foundation
  • Dam body volume : 620.000 m³
• Power Waterway system :
  • Nominal flow rate :
    • For pumping : 176,39 m³/s
    • For generation : 235,19 m³/s
  • Headrace Tunnel D = 7,80 m (6,70 m), L = 2.037 m (554 m)
  • Penstock Shaft :
    • Height : 162 m
    • Diameter : 6,70 m
  • Surge Tank :
    • Height : 260 m
    • Diameter : 16 m
  • Gate Shaft :
    • Service Gate B x H = 4,50 x 7,80 m
    • Maintenance Gate B x H = 4,50 x 7,80 m
    • Maximum gross head : 242,35 m
• PowerStation :
  • Semi outdoor PowerStation B x L x H = 33 x 90 x 41 m with four (4) Francis type pump-turbine units of vertical shaft, with nominal flow rate of each unit
    Q = 58,80 m³/s
  • Power :
    • for production 4 x 116 = ~464 MW
    • for pumping 4 x 124,5 = ~498 MW

PYRGOS

• Upper Reservoir :
  • Type of Dam : Hardfill Dam
  • Total reservoir volume : 2,42 x 10⁶ m³
  • Effective volume : 2,01 x 10⁶ m³
  • Η= 56 m from foundation
  • Dam body volume : 160.000 m³
• Power Waterway system :
  • Nominal flow rate:
    • For pumping : 69,79 m³/s
    • For generation : 93,06 m³/s
  • Headrace Tunnel D = 5 m (4,20 m), L = 863 m (639 m)
  • Penstock Shaft :
    • Height : 230 m
    • Diameter : 4,20 m
  • Surge Tank :
    • Height : 56 m
    • Diameter : 12 m
  • Gate Shaft :
    • Service Gate B x H = 3,00 x 5,00 m
    • Maintenance Gate B x H = 3,00 x 5,00 m
    • Maximum gross head : 289,35 m
• PowerStation :
  • Semi outdoor PowerStation B x L x H = 33 x 50 x 41 m with two (2) Francis type pump-turbine units of vertical shaft, with nominal flow rate of each unit
    Q = 46,53 m³/s
  • Power 220 MW
    • for production 2 x 110 = 220 MW
    • for pumping 2 x 117 = ~234 MW