The Greens have accused National of ignoring the public over the partial sale of state assets and bullying submitters in the select committee process.

The finance and expenditure committee looking at the Mixed Ownership Model Bill, which will facilitate the contentious partial sale of four state-owned energy companies, heard its final oral submissions this week.

However, the committee was told the report on submissions had already been given to the committee even before the final dozen or so people had spoken.

National's Maggie Barry came under fire for asking a submitter if he "registered his support for National's asset sale programme when he voted".

Greens co-leader Russel Norman questioned whether it was acceptable for a select committee submitter to be asked who they voted for.

He told NZ Newswire no one who submitted to a select committee should be put under pressure to reveal who they voted for.

"Based on that performance she's definitely not fit to be an MP, it's totally unacceptable."

Dr Norman said the early report on submissions missed out on about a dozen submissions, including an important presentation from the Friends of Manapouri group - concerned that profit-orientated power companies would be less co-operative with environmentalists over lake levels.

"It indicates that National are not listening to reason and nor are they listening to the people."

But committee chairman Todd McClay said that with 1448 submissions advisers had started work on their report early and were present when the final submitters spoke.

He denied the committee had made its mind up. It will now deliberate before reporting back to parliament by mid July.

Mr McClay said the submitter was not forced to reveal how he voted.

Ms Barry had been making a point on whether or not the government's intentions on asset sales have any bearing on the way the submitter voted, and she was within standing orders.