Grid-Connected Semitransparent Building-Integrated Photovoltaic System: The Comprehensive Case Study of the 120 kWp Plant in Kunming, China

Table 4

The calculated results with different mounting tilt angles.

Tilt angles	90°	85°	80°	70°	60°
Annual power production (MWh)	68.685	75.515	82.359	95.617	107.311
EPBT (years)	10.32	9.38	8.60	7.41	6.60
Environmental cost of generation (RMB yuan/kWh)	1.158 × 10^−2	1.053 × 10^−2	0.965 × 10^−2	0.832 × 10^−2	0.741 × 10^−2
Payback period (years)	17	15	14	12	11
NPV (RMB yuan)	272,820	359,347	446,053	614,015	762,164