BESSÈ SHP REFURBISHMENT & DAM SAFETY HOW AN EXPENSIVE IMPOSITION COULD BECOME AN OPPORTUNITY Sergio MAZZOLENI Studio Frosio
Bessè SHP & Leda Dam Leda Dam
BESSE’ Trieste
Vicenza Venice
Studio Frosio
Verona
Sergio Mazzoleni
Uplifting pressure elevation 1994 Piez.
Elevation
2007 Piez.
2007-1994
Elevation
Elevation
5
222,54
1
222,27
-0,27
1
217,69
2
216,27
-1,42
D3
216,17
3
216,57
0,40
2
217,74
4
216,08
-1,66
3
218,01
5
215,51
-2,50
4
225,15
6
215,41
-9,74
D1
215,70
7
216,55
0,85
S2
216,68
8
215,92
-0,76
7
229,14
9
228,02
-1,12
3
1
5
6 231
7
8
9
4
2
water surface elevation (229.70)
227 1994
225
2007 223
221
Studio Frosio
Uplifting pressure elevation (m)
229
219
217
215 1
2
3
4
5
Piezometers
6
7
8
9
Sergio Mazzoleni
The scheme and the water level reduction
Studio Frosio
Water surface elevation
Sergio Mazzoleni
Consolidation works & costs TASK
COST [â‚Ź]
Mortar injection
174,000.00
Drains, piezometers and measuring system
143,000.00
Repair of the damaged concrete
185,000.00
Impermeabilization of diverting tunnel
58,000.00
Other works
70,000.00 630,000.00
Studio Frosio
TOTAL
Sergio Mazzoleni
Italian RES support system INCENTIVES Power
Energy
1 MW
progressive tariff (first 2,000 MWh)
> 10 MW
new plant: whole production
all-inclusive tariff Optional (220 €/MWh)
powered plant: 5% production
10 MW (& run-off-river plants of any power)
Green Certificates
hourly zonal price (Exchange price)
market price
refurbished plant:
-
Intensive costs ≤ 2 M€/MW % of historical production + additional production Intensive costs > 2 M€/MW whole production
-
Cost & green certificates 55% With dam consolidation
50% 45% 40% 35% 30% 25% 20% 0,0
0,5
1,0
1,5
2,0
2,5
3,0
3,5
4,0
Cost [10^6 â‚Ź]
Sergio Mazzoleni
Studio Frosio
Green Certificates [% energy production]
Without dam consolidation
Financial parameters of each option Plant refusbishment with dam consolidation
630,000.00
2,030,000.00
2,660,000.00
Additional production per year [kWh]
0
920,000
920,000
Green certificates per years [1 GC = 1 MWh]
0
4,611
5,756
Additional cash-flow per year [€]
0
520,800.00
635,400.00
- 630,000.00
2,215,419.00
3,125,651.00
Costs [€]
Project NPV [€]
Sergio Mazzoleni
Studio Frosio
PARAMETER
Plant refusbishment without dam consolidation
Dam consolidation
BESSÈ SHP REFURBISHMENT & DAM SAFETY HOW AN EXPENSIVE IMPOSITION COULD BECOME AN OPPORTUNITY Sergio MAZZOLENI Studio Frosio
Via Calvi, 9 25123 Brescia (Italy) sergio.mazzoleni@studiofrosio.it www.studiofrosio.it