Multi-state lawsuit challenging the federal government’s decision to delay the effective dates of final rules governing energy efficiency for six products.

Michigan AG submitted letter to Secretary of State John Kerry urging him to deny the permit application for the St. Clair River oil pipelines.

Investigation into whether ExxonMobil’s activities in the climate science sphere constitutes a violation of New York’s Martin Act, which prohibits publicly traded companies from misleading investors.

Massachusetts AG submitted comments to Federal Energy Regulatory Commission and a study opposing a proposed natural gas pipeline that would have run through New England.

Michigan AG convened the Michigan Petroleum Pipeline Task Force to investigate the safety of the Straits pipelines.

Michigan AG pursued enforcement action against Enbridge Energy in response to their actions which caused over 1 million gallons of heavy crude oil to spill into the Kalamazoo River.

Illinois AG co-authored legislative proposal to regulate bulk materials storage facilities that handle petroleum coke and other refinery production materials in response to air pollution violations linked to several facilities on Chicago’s southeast side.

Multi-state intervention in support of Energy Department proposed rule setting efficiency standards for residential gas furnaces.

Illinois AG sued and entered into settlement with the Illinois Department of Natural Resources (DNR) requiring DNR to improve transparency and public participation in the coal permitting process.

Washington and South Carolina AGs pursued mandamus action to force the Nuclear Regulatory Commission to proceed with the licensing process of Yucca Mountain as a nuclear waste repository.

Multi-state coalition reached agreement with U.S Department of Energy establishing timetable for updating federal efficiency standards for energy-intensive consumer products.

Massachusetts AG filed an administrative appeal filed by a lawsuit challenging the adequacy of the Nuclear Regulatory Commission’s consideration of the environmental consequences of renewing the license for the Pilgrim Nuclear Power Plant.

States joined NRDC lawsuit challenging the DOE’s attempt to lower energy efficiency standards for certain appliances under the Energy Policy and Conservation Act (ECPA).

Multi-state challenge to a Nuclear Regulatory Commission rule on storage of spent nuclear fuel, resulting in a decision that the rule was a major federal action that requires the agency to either make a finding that the action would have no significant environmental action or issue an environmental impact statement.

After years of litigation and settlement attempts between environmental and wind turbine industry groups, the California AG’s office stepped in and brokered a settlement to protect migratory birds.

California AG filed brief with the California Public Utility Commission defending the state’s authority to use feed-in tariffs.

Multi-state lawsuit challenging the Department of Energy (DOE)’s failure to create energy efficiency standards for consumer appliances according to the timeline established by the Energy Policy and Conservation Act (ECPA).