A detailed power transformer design analytical methodology has been introduced in the previous chapters of the book. Within this methodology, the design problem was reduced to the determination of the optimum electric loading, magnetic loading, core diameter and window height that would lead to the fulfilment of the required power transformer lead specifications (i.e., the VA rating, maximum copper losses, maximum no-load losses and leakage reactance). This chapter is dedicated to presenting alternative approaches to solve the reduced design equations outlined in Chapter 5. It should be reiterated here that once the optimum electric loading, magnetic loading, core diameter and window height are determined, all remaining design details my be inferred as per the detailed derivations presented in Chapter 4.