Technical and Economic Aspects of Gridconnected Solar Photovoltaics in Brazil - Implementing Environmental and Resource Management - page 55

Table 6.5. Summary of economic indicator values for the PV system of configuration 2
(25.6 kWp of pc-Si modules with 18ºN tilt) in two sites, considering various scenarios

Reference case
[4.763 kWh/(m 2 *day),
18ºN]

Higher irradiation site
[5.863 kWh/(m 2 *day),
3ºN]

Indicator values ( NPV; Payback;
IRR )

No additional condition -36212; 35.8; -1.11% +10153; 28.7; +0.29%

A = Feed-in tariff (3 times retail
price)

+164731; 17.3; +4.02% +303799; 12.7; +6.77%

B = Electr. price incr. 1% above
inflation

-5928; 30.7; -0.16% +47437; 25.3; +1.23%

C = 30% initial capital subsidy or
tax relief

+30712; 25.1; +1.20% +77068; 20.1; +2.81%

A + B +225387; 16.0; +4.96% +385482; 12.0; +7.72%

A + C

+231646; 12.1; +7.27% +370714; 8.9; +10.72%

B + C

+60988; 22.4; +2.16% +114353; 18.4; +3.77%

A + B + C +292303; 11.5; +8.23% +452398; 8.6; +11.67%

Table 6.6. Summary of economic indicator values for the PV system of configuration 3
(27.4 kWp of a-Si modules with 18ºN tilt) in two sites, considering various scenarios

Reference case
[4.763 kWh/(m 2 *day),
18ºN]

Higher irradiation site
[5.863 kWh/(m 2 *day),
3ºN]

Indicator values ( NPV; Payback;
IRR )

No additional condition

+3712; 27.9; +0.12% +53268; 23.7; +1.61%

A = Feed-in tariff (3 times retail
price)

+232206; 13.8; +5.96% +380814; 10.3; +9.00%

B = Electr. price incr. 1% above
inflation

+36089; 25.9; +1.06% +93115; 21.3; +2.55%

C = 30% initial capital subsidy or
tax relief

+63242; 20.6; +2.62% +112778; 16.6; +4.36%

A + B +299108; 13.0; +6.91% +470186; 9.8; +9.95%

A + C +291716; 9.7; +9.69% +440324; 7.2; +13.60

B + C

+152625; 15.4; +5.32%

+95599; 18.8; +3.57%

A + B + C

+358619; 9.3; +10.65% +529696; 7.0; +14.56%

From the results in Table 6.6 can be derived that, for the third configuration and in
the site initially planned, the investment would obtain a significant positive return
in case any of the modified conditions stands, and in the higher irradiation site that
result would be attained even without any changes. An IRR above 5% could be