Voltage stability is a vital element in the forecasting and operation of modern power systems. The transmission system experiences increased stress due to the higher demand for power, which makes the network more susceptible to instability. Voltage collapse occurs when consecutive events, combined with voltage instability in a large part of the system, can result in an intolerable low voltage situation. When the demand for reactive power increases, the system can become voltage unstable. To maintain system stability, it is essential to determine the location for mounting flexible alternating current transmission system (FACTS) devices and the necessary amount of injected voltage and angle. Using saddle-node bifurcation theory with PSAT makes it possible to ascertain these controllers’ effects on the maximum loading point. In this article, we proposed the utilization of continuation power flow to assess the results of FACTS controllers on system load capacity. This proposed method uses the IEEE 14 bus system to compare the static voltage stability margin enhancement achieved through different FACTS controllers.