Transformation of a University Lecture Hall in Valladolid (Spain) into a NZEB: LCA of a BIPV System Integrated in Its Façade

Table 5

Impact of the module degradation rate on the emission factor, for a 30-year system lifetime.

Reduction in module efficiency per year (%)	Power generation over lifetime (kWh)	Emission factor (kg CO2/kWh)	Δ emission factor^† (%)
0.3	370,484	0.142	5.52
0.4	365,228	0.144	4.16
0.5	360,069	0.146	2.79
0.6	355,005	0.148	1.40
0.7	350,033	0.151	—
0.8	345,152	0.153	−1.41
0.9	340,361	0.155	−2.84
1	335,656	0.157	−4.28
1.1	331,038	0.159	−5.74

^†Taking a 0.7% reduction in module efficiency per year as a reference.