Environmental Engineering Reference
In-Depth Information
In the evaluation of the Photo-voltaic power plant a following indicators
will be taken into a consideration.
Economic Indicator - Electricity cost - 0.23 Euro/kWh
Maximum change 0.023 Euro/kWh
Energy Production Indicator - Electricity Production - 80 kWh/day
Maximum change - 8 kWh/day
Environment Indicator - CO
2
emission decrease - 220 gr/kWh
Maximum change - 20 gr/kWh
Sustainability Index based on the indicators as shown can be defined with
following expression
Q
q
q
q
(6)
1
1
2
2
3
3
where
φ
1
- weighting coefficient for electricity cost indicator
φ
2
- weighting coefficient for energy production indicator
φ
3
- weighting coefficient for CO
2
emission decease indicator
q
1
- electricity cost indicator- Euro/kWh
q
2
- energy production indicator - cEuro/kWh
q
3
- CO
2
emission decrease indicator - gr/kWh
Sustainability Index monitoring is performed by the measurement of the
individual indicators. The first step in the Sustainability Index determination is
normalization of the indicators. This means that the special procedure is
adapted for the formation of the Sustainability Index as the aggregation
function of the indicators. The next step is the definition of the constrains for
the weighting coefficient . In our analysis we have used following cases:
Case 1 Electricity Cost > Electricity Production = Environment
Indicator
Case 2 Electricity Production > Electricity Cost = Environment
Indicator
Case 3 Environment Indicator > Electricity Cost = Energy Production
The Resilience Index for photo-voltaic is defined as
