Sun Cable's voluntary administrators say there's been "strong interest" in the massive solar project - including from parties beyond its existing shareholders.
The $30 billion plan to export solar power generated in the North Territory to Singapore collapsed in January following disagreements between its billionaire backers, iron ore magnate Andrew Forrest and tech founder Mike Cannon-Brookes.
FTI Consulting said on Wednesday there multiple parties - including those who are not existing shareholders - who had submitted non-binding indicative offers for the mega-project.
FTI and Moelis are now seeking to progress a shortlist of bidders through to the submission of binding proposals by the end of April, with completion of the deal targeted for the end of May.
FTI said the sale process advertised Sun Cable as a complete development, including the AAPowerlink submarine cable to Singapore, and the sale was progressing on that basis.
Mr Forrest said in January he planned to bid for the project with a plan to scrap the 4500km subsea cable, which he viewed as too risky.