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