PRESSA Project Fact Sheet


An increasing quantity of solar photovoltaic (PV) systems are being installed in many countries around the world in both grid-tied and stand-alone applications. These PV modules need to be evaluated to ensure that the procured modules will: meet the safety requirements (both electrical and mechanical), meet the nameplate rating requirements (rating tolerance shall be minimum) and be reliable and durable (at least 20 years).

Since the module are procured based on the “$/watt” as per the nameplate rating, ensuring the accuracy of the nameplate rating is very critical. The lifetime of PV modules are dictated by the failure modes and degradation rates. Three of the major failure/degradation modes in the Ghana-like climatic conditions are: solder-joint degradations/failure mode; encapsulant browning; high potential and high relative humidity/rain related degradation.

Project Objectives

This research project aims (inter alia) to:

Key Activities

  1. Training at PV Reliability Laboratory (PRL) at Arizona State University
  2. Establishment of PV Screening laboratory
  3. On-field Study
  4. Off-field (Laboratory)



Equipment Expected


USAID through US National Academy of Sciences (Sub-Grant no. 2000004829)


(Principal Investigator) – Dr Gabriel Takyi (


September 1, 2014 - August 31, 2017