"The report has been submitted to the chief minister," Justice Sivarajan told reporters later.
He declined to give out content of the four-volume report, saying the chief minister would inform the media about it.
"I have received the report but have not opened it as yet...will inform you later," Vijayan said.
The Kochi-based commission's tenure was to expire tomorrow.
The commission was appointed by the previous Oommen Chandy government after allegations surfaced about duping of several people of crores of rupees by Saritha Nair and Biju Radhakrishnan by offering solar panel solutions.
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Several politicians, including then chief minister Oommen Chandy, were among those examined by the commission.
Chandy's former gunman Salim Raj, his former personal staff member Jikkumon had also been examined, after Saritha, the prime accused, deposed before the panel.
Chandy had maintained that the charges against him and his office were "politically motivated" and had denied any wrongdoing.
Set up in October, 2013, the commission had held 353 sittings, examined 214 witnesses and 972 documents.