PV Modules are rated under standard test conditions (STC), yet rarely operate under those conditions in the field. PAN files describe module performance under a wide range of environmental conditions, and serve as the basis for PVSyst performance forcasting models - the standard forecasting software in the industry. PAN files are only as accurate as the measurement data used to generate them.

PVEL PAN files are based on precise measurements over a wide range of operating conditions.

PAN File Generation

PVEL measures PV module performance at irradiances and temperatures per IEC 61853-1. Table 2 of IEC 61853-1, reproduced below, outlines the performance measurement metrics used in PVELs PAN file development.

reduce uncertainty with better data.

During performance measurements, temperature uniformity in a given sample is within 2 C across the three measurement locations defined in Figure 1 of IEC 61853-1. In addition to these measurements, a sophisticated combination of methods outlined in IEC 60891 and IEC 60853 help maintain data integrity and bolster result confidence.

LIGHT-INDUCED DEGRADATION All modules used in PAN file development are light-soaked to achieve full light-induced degradation (LID) prior to performance measurements. In the LID protocol, the modules are initially flash tested at STC. The modules are then exposed to outdoor sunlight until they are stabilized.

Irradiance (Wm-2) Module Temperature15 C 25 C 50 C 75 C

1100 NA

1000

800

600

400 NA200 NA NA100 NA NA

Table 2 of IEC 61853-1, ISC , PMAX , VOC , and VMAX versus irradiance and temperature

PV Evolution Labs (PVEL) PAN files reduce energy model uncertainty, lower risk of plant underperformance caused by misrepresentations in the energy model, and improve performance testing margins.

PVEL can provide a direct upload of the files into the PVSyst databasethe strongest PAN file offering in the industry.

All rights reserved 2013 PV Evolution Labs REV 2013-11

1360 Fifth Street / Berkeley, California / 94710 / USA

To discuss our full range of capabilities and services, contact the PVEL sales team at 415.335.9710 or sales@pvel.com.

Headquartered in Berkeley, California, the PVEL team advises key decision makers at many banks, developers, EPC firms and IPPs. For our downstream partners, PVEL provides visibility into module technology, quality, and performance. For manufacturers, PVEL provides access to many buyers through one qualification program.

PVELs staff and facilities are paramount in the industry. From our grid-connected outdoor testing at PV-USA, to our state-of-the-art laboratory, our service offerings provide the data that is advancing solar.

our laboratory