The Energy Department says it won’t provide the names of staffers who worked on climate issues to President-elect Donald Trump’s transition team, even as it pledges to cooperate with the incoming administration.

Trump’s transition team is seeking information about agency operations and personnel, including a list of employees and contractors who attended international meetings on climate change over the past five years.

An Energy Department spokesman said Tuesday that while officials “will be forthcoming with all publicly-available information, we will not be providing any individual names to the transition team.”

Spokesman Eben Burnham-Snyder says some of the questions asked by Trump’s team left DOE workers “unsettled.” He says DOE officials “respect the professional and scientific integrity and independence of our employees at our labs and across our department.”