2021 NIST/UL Workshop on Photovoltaic Materials Durability (Agenda) 

December 7-9, 2021

9:00 AM-12:15 PM (UTC-05:00)

Virtual Meeting 

Day 1: Tuesday, December 7, 2021 (9:00 AM-12:15 PM, UTC-5:00)

8:30 - 9:00 AM Speakers and Session Chairs Check In (Xiaohong Gu, NIST)

9:00 - 9:15 AM Opening Remarks--- Joannie Chin, Acting Director, NIST Engineering Laboratory

Kenneth Boyce, Director, UL Energy & Power Technologies

Session 1: PV Reliability Programs (Chairs: Kenneth Boyce, UL and Laura Schelhas, NREL)

9:15 - 9:30 AM DOE SETO Office (Garrett Nilsen, DOE)

9:30 - 9:45 AM DuraMAT: Material Durability Research Enabling 50-year Modules (Teresa Barnes,

NREL)

9:45 - 10:00 AM IEA-PVPS Task 13: Quality, Durability and Integration of PV in Different Environments & 

Applications (Ulrike Jahn, VDE Renewable GmbH, Germany) 

10:00 - 10:15 AM Panel Discussion (Chairs: Kenneth Boyce and Laura Schelhas)

Session 2: PV Module Circular Economy (Chairs: Aron Newman, NIST and Tadanori Tanahashi, AIST)

10:15 - 10:30 AM PV CIRCULAR ECONOMY: REGULATORY AND POLICY CONSIDERATIONS (TAYLOR 

CURTIS, NREL)

10:30 - 10:45 AM Approaches to Facilitate Responsible PV Module Re-Use (François Rummens, Belgian 

Electrotechnical Committee, Belgium)

10:45 - 11:00 AM Increasing the Recyclability of PV Modules (Gernot Oreski, PCCL, Austria)

11:00 - 11:15 AM Panel Discussion (Chairs: Aron Newman and Tadanori Tanahashi)

Session 3: Climate Change and Post-disaster Investigation (Chairs: Nancy Phillips and Robert 

Flottemesch, Brookfield USA)

11:15 - 11:30 AM Field Failures and Extreme Weather: Findings from Field-testing of Damaged Solar Assets

(Jenya Meydbray, PV Evolution Labs)

11:30 - 11:45 AM Bolted Joint Research - Improving the Resilience of PV Systems (Gerald Robinson,

Lawrence Berkeley National Laboratory)

11:45 AM - 12:00 PM Identifying and Characterizing Fire Related Damage in Solar Modules (Eric 

Daniels, Suncycle USA)

12:00 PM - 12:15 PM Panel Discussion (Chairs: Nancy Phillips and Robert Flottemesch)
Day 2: Wednesday, December 8, 2021 (9:00 AM-12:15 PM, UTC-5:00)

8:30 - 9:00 AM Speakers and Session Chairs Check In (Xiaohong Gu, NIST)

Session 4: PV Module Field Performance (Chairs: Colleen O’Brian, UL and John Wohlgemuth, Powerkmark 

Inc)

9:00 - 9:15 AM Testing Methodology, Measurement, and Observation Biases: Insights from 80GW of PV 

field inspections (Rob Andrews, Heliolytics)

9:15 - 9:30 AM Real-World Backsheet Survey (Laura Bruckman, Case Western Reserve University)

9:30 - 9:45 AM Electrical Insulation for Field Aged Modules (Tadanori Tanahashi, AIST, Japan) 

9:45 - 10:00 AM Panel Discussion (Chairs: John Wohlgemuth and Colleen O’Brian)

Session 5: Accelerated Laboratory Testing (Chairs: Michael Owen-Bellini, NREL and Peter Pasmans, 

Endurans Solar)

10:00 - 10:15 AM Rate of PID-p Progression in n-PERT Cells Depends on Encapsulant Resistivity and 

Irradiance (Brian Habersberger, Dow)

10:15 - 10:30 AM Material Characterization and Durability of Clear Backsheets for Bifacial PV 

Modules (Xiaohong Gu, NIST)

10:30 - 10:45 AM BACKFLIP: A Comparison of Emerging Non-Fluoropolymer-Based, Co-Extruded PV 

Backsheets to Industry-Benchmark Technologies (David Miller, NREL)

10:45 - 11:00 AM Validating IEC TS 63209 Mechanical and Backsheet Degradation Test Legs

(Colin Sillerud, CFV LABS)

11:00 - 11:15 AM Panel Discussion (Chairs: Peter Pasmans and Michael Owen-Bellini)

Session 6: Linking Accelerated Laboratory Tests to Field Performance (Chairs: William Gambogi, Xiaohong 

Gu, NIST)

11:15 - 11:30 AM Understanding the Variability Extrapolation from Lab to Field Conditions (Mike Kempe,

NREL)

11:30 - 11:45 AM Challenges, Opportunities and Approaches for New Service Life Estimation Models for PV 

Modules- Results of IEA-PVPS-Task 13 (Karl-Anders Weiss, Fraunhofer ISE, Germany) 

11:45 AM - 12:00 PM Moving from Qualifying Test to Service Life Prediction (James Pickett, Consultant)

12:00 PM - 12:15 PM Panel Discussion (Chairs: William Gambogi and Xiaohong Gu)
Day 3: Thursday, December 9, 2021 (9:00 AM-12:15 PM, UTC-5:00)

8:30 - 9:00 AM Speakers and Session Chairs Check In (Xiaohong Gu, NIST)

Session 7: Characterization and Modeling (Chairs: David Miller, NERL and Mihail Bora, LLNL)

9:00- 9:15 AM Statistical and Deep Learning Methods for Degradation Prediction of Polymeric Materials 

in PV Systems (Yili Hong, Virginia Tech)

9:15 - 9:30 AM Measurement and Simulation of Moisture in PV Modules (Stefan Mitterhofer, NIST)

9:30 - 9:45 AM Predicting Performance of PV Modules with Differing UV Absorbers Undergoing UVInduced Degradation (Peter Hacke, NREL) 

9:45 - 10:00 AM Panel Discussion (Chairs: David Miller and Mihail Bora)

Session 8: Linking Research to Standards (Chairs: George Kelly, IEC and Liang Ji, UL)

10:00 - 10:15 AM IEC TS 63209-2 AND EXTENDED TESTING OF PV POLYMERIC 

COMPONENTS (NANCY PHILLIPS)

10:15 - 10:30 AM Development of the Front- and Back-sheet Standard (IEC 62788-2-1) (Peter Pasmans,

Endurans Solar, The Netherlands)

10:30 - 10:45 AM UL Standards Update: Corrosion Testing for PV Applications (Colleen O’Brian, UL)

10:45 - 11:00 AM Panel Discussion (Chairs: George Kelly and Liang Ji)

Session 9: Emerging PV Technology (Chairs: Ingrid Repins, NREL and Stephanie Moffitt, NIST)

11:00 - 11:15 AM Perovskite Module Scaling and Stability (Reinhold Dauskardt, Stanford University)

11:15 - 11:30 AM Photovoltaics for Vehicles -Similarities and Differences between Standard PV and 

Car-Component PV (Kenji Araki, University of Miyazaki, Japan)

11:30 - 11:45 AM Performance Risks for Building Integrated Photovoltaic Materials, Modules, and Systems

(Andrew Fairbrother, EPFL, Switzerland)

11:45 AM -12:00 PM Panel Discussion (Chairs: Stephanie Moffitt and Ingrid Repins)

12:00 PM -12:15 PM Summary and Adjourn (Kenneth Boyce, UL & Xiaohong Gu, NIST)

Past NIST PV Workshops can be found:

2019 NIST/UL Workshop on PV Materials Durability 

2017 4th NIST/Atlas Workshop on PV Materials Durability 

2015 3rd NIST/Atlas Workshop on PV Materials Durability 

2013 2nd NIST/Atlas Workshop on PV Materials Durability

2011 1st NIST/Atlas Workshop on PV Materials Durability