I. Introduction
In recent decades, a surge in the emergence of research in the direction toward the utilization of modernistic computational methods to evaluate and manage stray losses in transformers has been witnessed. These losses can be significantly higher in transformers intended to be of service to renewable energy application due to the irregularity of renewable energy sources and related arduous operating conditions. A daunting task for transformer designers in this day and age is the capitalization of significantly higher guaranteed loss requirement, competitive transformer pricing, and superlative performance. The advancement of computational power enables utilization of tools suchlike Finite Element Method (FEM) to grant opportunities to improve transformer designs and performance. The introduction of FEM into the transformer challenges and design philosophy in renewable application has ceded new horizons and principles in addition to economizing the engineering labour hours.