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Table 9 Payback period (years) of the SWPS at different interest rates

From: Potential of microfinanced solar water pumping systems for irrigation in rural areas of Burkina Faso

SWPS systems PBP at 9.5% PBP at 12% PBP at 14%
Market segment 1 AC SWPS/DWP 18.5 > 20 > 20
Market segment 2 AC SWPS/DWP 15.0 > 20 > 20
Market segment 3 DC SWPS/DWP 7.9 9.0 9.5