Queensland's donation declaration threshold will only keep increasing under the LNP government, unless the federal government decides to make a change.

The government is coming under increasing pressure to be more transparent, after revelations by Fairfax Media that Energy Minister Mark McArdle hosted a party fundraiser in a power company's boardroom last year, which he did not have to declare in his ministerial diary.

Ministers release an edited version of their diaries each month but under the guidelines they do not have to include any party political business, which includes fundraisers.

The boardroom fundraiser was just one of a series of meetings Mr McArdle held with ERM Power executives and their lobbyists, SAS Group, which included Mr McArdle as the guest speaker at an SAS Group lunch in March this year, where issues such as the government's 30-year energy plan and potential assets were discussed.

Mr McArdle did not go into detail about the event in his diary, putting "boardroom lunch" as the purpose of his visit. SAS Group did not declare it on its contact register, held by the Integrity Commissioner, and told Fairfax Media this was because the lunch was not an ERM Power event.