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1. Licensing procedure |
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Application number in Regulatory Authority of Energy for the issuance of the Power Production license |
Γ – 05879 |
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2. Technology |
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R.E.S. unit: |
wind park |
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Storage unit |
pumped hydro storage (PHS) |
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Figure 1: Layout of the hybrid power plant in Astypalaia. |
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3. Siting |
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Wind park installation location: |
Hill “Castellano” Eastern Astypalaia |
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PHS installation location: |
Hill “Castellano” & Cape “Trypiti” Eastern Astypalaia |
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Figure 2: Siting of hybrid power plant in Astypalaia. |
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Figure 3: 3D representation of the wind park’s siting on a wind potential map background. |
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4. Dimensioning |
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Nominal guaranteed power (MW) |
2.50 |
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Wind park’s nominal power (MW) |
3.60 |
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Hydro turbines nominal power (MW) |
2.738 |
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Pumps nominal mechanical power (MW) |
3.368 |
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Pumps nominal electrical power (MW) |
3.544 |
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Hydro turbines nominal flow (m3/s) |
0.85 |
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Pumps nominal flow (m3/s) |
0.77 |
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Penstock structure |
double |
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Minimum falling head (m) |
315 |
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Maximum pumping head (m) |
360 |
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Falling penstock inner diameter (m) |
1.5 |
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Pumping penstock inner diameter (m) |
1.5 |
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Upper reservoir total volume (m3) |
269,238 |
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Upper reservoir effective capacity (m3) |
255,648 |
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Minimum water volume stored in upper reservoir (m3) |
13,590 |
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Total penstock length (m) |
1,485 |
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Lower reservoir |
sea |
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Figure 4: Penstock route representation on a 3D digitized land terrain. |
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Figure 5: Vertical cross section of the penstock route. |
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5. Energy – environmental results |
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Annual cover percentage of the electricity consumption in the autonomous insular system from the hybrid power plant: |
89.28% |
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CO2 emission annual reduction (tn): |
4,861 (85.73%) |
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Figure 6: Annual power production synthesis before the introduction of the hybrid power plant. |
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Figure 7: Annual power production synthesis after the introduction of the hybrid power plant. |
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Figure 8: Power production synthesis during the annual peak power demand period (August) before the introduction of the hybrid power plant. |
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Figure 9: Power production synthesis during the annual peak power demand period (August) after the introduction of the hybrid power plant. |
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