The commission's deadline is April 30, with a draft report expected by the end of March.
Sen. John Rodgers on the committee on Energy and Natural Resources says the panel will have already moved on the bill by then.
Rodgers said that he and other senators want a moratorium to study health impacts of the projects and receive recommendations from the commission.
The five-member energy siting commission formed by Gov. Peter Shumlin conducted a site visit of the Lowell and Sheffield wind projects last week.