Heather Zichal has advised Obama since his 2008 presidential campaign and took over the role of lead energy advisor after
“Heather is one of the president’s most trusted policy advisors," White House Chief of Staff
The statement did not give a reason for Zichal's departure. Through a spokesman, Zichal declined to comment.
Zichal, the president's deputy assistant for energy and climate change, is expected to leave in the coming weeks. A White House official did not offer any possible replacements. Any successor would have to shepherd controversial initiatives the White House plans to undertake to tackle climate change in the absence of congressional action.
Rules proposed recently by the
League of Conservation Voters President Gene Karpinski described Zichal as a "tremendous leader" in the fight against climate change. Zichal played a role in creating tougher fuel efficiency standards, developing mercury and air pollution safeguards and the recent regulations aimed at cutting carbon pollution from power plants, Karpinski said.
"America is better off today because of her commitment to a cleaner, safer world," Karpinski said.