Conventional gas exploration will happen again in Victoria after years of being banned, but fracking will become unconstitutional.

New laws will be put to parliament on Tuesday to allow the reintroduction of conventional gas exploration from July 2021.

Other laws will be introduced to permanently ban fracking and coal seam gas exploration under the Victorian constitution, which was an Andrews Labor government election promise.

Victoria has had a moratorium on onshore gas exploration for years, becoming a point of political contention particularly over energy prices and supply.