Abstract: . . .  measurement of module performance. 2 The information in Table 1 includes the results from modules tested at the University of California, Berkeley and at Energy Alternative Africa's compound in Nairobi Kenya in addition to the 130 modules tested in the field. The additional modules tested include 3 brand A modules, 2 brand B1 modules, 3 brand B2 modules, and 6 brand C2 modules. These statistics all exclude failed modules, defined as those producing less than 10% of rated capacity. Cracked modules and . . .
. . .  generous funding. Finally, we dedicate this work to Quantum efficiency data are used to “tune” the spectral output of the solar simulator to match the PV module’s spectral response. This tuning is necessary to ensure an accurate measurement of module performance. 2 The information in Table 1 includes the results from modules tested at the University of California, Berkeley and at Energy Alternative Africa's compound in Nairobi Kenya in addition to the 130 modules tested in the field. The additional . . .
. . .  CONCLUSIONS In this paper we report performance results for a-Si PV module performance from field testing in rural Kenya. The IV test method that we employed has an estimated accuracy of ±5% and a repeatability of ±5%. The method allowed us to make accurate measurements in rugged field conditions. These tests are critical for documenting the level of service that PV technologies are providing to rural end users. Our results indicate that two of the three brands of single junction a-Si modules available in . . .
. . .  Sacramento Municipal Utility District (SMUD), 1998 (9) Staebler, D.L. and Wronski, C.R., "Reversible Conductivity Changes in Discharge-Produced Amorphous Si", Applied Physics Letters, 31(4): 292-294, 1977 (10) Van der Vleuten, F. and Guillardeau, D. "Amorphous solar panels now affordable and reliable", unpublished manuscript from Free Energy Europe 1 4. CONCLUSIONS In this paper we report performance results for a-Si PV module performance from field testing in rural Kenya. The IV test method that . . .
. . .  pairs at a rate of 10 Hz. The tests take 15 to 25 seconds each, which results in 150 to 250 current-voltage data pairs per curve. During the tests we varied the load on the PV module by manually adjusting a 100 ohm power rheostat. We used a Licor 200SA silicon diode pyranometer to measure the average solar radiation on the PV module during the tests and a type-K thermocouple to measure the initial and final temperature on the back surface of the module. We used a portable test rack to orient the modules . . .
. . .  Rated Photovoltaic Module Performance", 19th IEEE Photovoltaic Specialists Conference, New Orleans, 1987 (5) Lehman, Peter A. and Chamberlin, Charles E., "Field Measurements of Flat Plate Module Performance in Humboldt County, California", 19th IEEE Photovoltaic Specialists Conference, New Orleans, 1987 (6) Ochieng, Frederick, "The Amorphous Question", SolarNet, vol. 1, number 1, Nairobi, Kenya, 1999 (7) Rummel, Steve of NREL, personal comm., 2000 (8) PVUSA, "1997 PVUSA Progress Report", submitted . . .
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