Requirements To write an IEEE Transaction paper to address the state-of-the-art methods and techniques of voltage stability in large power systems. The paper must have: • A critical review of the different methods used for addressing and mitigating the voltage stability in large power systems; • A brief description of each method; • A comparison between the reviewed methods; • A conclusion to address the applicability of the reviewed methods; • A list of new references (IEEE Transaction papers only). P.S. The references must not be older than