Powerful energy and business interests have become allies of North Dakota in that state's two-year legal fight against a 2007 Minnesota clean energy law.
Mining and electric utility trade associations are among the 11 partisan interests opposed to Minnesota in a case that experts say could help define the power of states to regulate carbon-free electrical generation.
The clash is happening in Minnesota's appeal of a federal judge's ruling in April invalidating a part of the state's Next Generation Energy Act. The ruling threw out Minnesota's broad ban against utilities signing deals to import coal-generated electricity on grounds that it's a trade barrier under the U.S. Constitution's Interstate Commerce Clause.
"This is what the Founding Fathers were trying to prevent," said William Perry Pendley, chief executive of the Mountain States Legal Foundation, a Colorado-based free enterprise advocacy group that filed one of three friend-of-the-court-briefs in the appeal last week. "The issue of the degree to which states can erect barriers to commerce is important."
The arrival of free market and fossil fuel interests as "friends" of the Minnesota-North Dakota litigation comes three months after nine environmental and renewable energy groups did the same thing on Minnesota's behalf. Those groups, including trade associations for the U.S. solar and wind industries, fear that clean energy policies in 29 states could be undermined if the April ruling is upheld.
'It's a huge case'
James Coleman, an assistant law professor who focuses on energy regulation at the University of Calgary's Faculty of Law and Haskayne School of Business, said the case raises legitimate questions about whether Minnesota's law — which was designed to regulate in-state utilities — might unfairly apply to large multistate power companies.
"It is a huge case," said Coleman, a Minnesota native who is not involved in the litigation. "I am not surprised to see the national interest in it."
Ari Peskoe, energy fellow at Harvard Law School's Environmental Policy Initiative, has been tracking challenges to state energy policies under the U.S. Constitution's Commerce Clause. The Minnesota-North Dakota appeal is before a panel of the Eighth U.S. Circuit Court of Appeals in St. Louis, and a ruling likely will come later this year. Peskoe said the outcome could be as important to other states as it is to Minnesota.