St Austell supermarket public meeting will take place tonight at 6pm in the Council Chamber at St Austell One Stop Shop, Penwinnick Road.
All are welcome and on arrival will be able to register their wish to speak.
Mike Varney, chairman of Cornwall Council's strategic planning committee, said: "I'm aware that there are a lot of people who want to have their say and we on the strategic planning committee want to listen to them."
The three planning applications will then be considered by the strategic planning committee on January 30.
Follow the events of the meeting live via the blog below.