ABSTRACT This paper presents a second order decoupled load flow method. The salient features are consideration of all terms in the Taylor series expansion, use of constant decoupled Jacobians and extremely simple computations involved in evaluating the active and reactive power mis-match vectors. Load flow solutions for several test systems have been obtained using the proposed and Fast Decoupled Load Flow (FDLF) methods. The test cases include systems with large R/X ratio transmission lines and series compensated lines.Limited investigations reveal that the proposed method has an edge over the FDLF method in terms of reliability of convergence and solution time.