Michigan is taking legal action against major oil and gas companies, joining nearly a dozen other states in climate-related lawsuits against ExxonMobil and its industry peers. Michigan’s approach is distinct: it accuses Big Oil not of misleading consumers but of inflating energy costs by suppressing competition from cleaner technologies like solar power and electric vehicles.
Legal experts note the strategy could be transformative if Michigan overcomes initial industry dismissal attempts.
Michigan Attorney General Dana Nessel filed the federal lawsuit against BP, Chevron, ExxonMobil, Shell, and the American Petroleum Institute. The lawsuit, under federal and state antitrust laws, alleges a conspiracy to delay the transition to renewable energy and maintain market dominance of fossil fuels.
Exxon described the lawsuit as “another legally incoherent effort to regulate by lawsuit,” asserting it won’t reduce emissions or help consumers.
Chevron did not comment, and BP and Shell declined to respond. API’s Ryan Meyers called Michigan’s case “baseless” and part of an anti-industry campaign.
During a congressional hearing, U.S. Rep. Harriet Hageman mentioned Michigan’s lawsuit as a reason for a federal response. Hageman said she is working on legislation to protect fossil fuel companies from state climate liability laws.
API is lobbying Congress for liability shields, citing “draft legislation related to state efforts to impose liability on the oil and gas industry.” The organization prioritizes stopping “extreme climate liability policy” by 2026.
The Michigan lawsuit claims oil companies colluded as a cartel to hinder alternative energy development. This behavior, the state argues, limits consumer choices and raises energy costs.
Nessel stated energy costs are high due to corporate greed prioritizing profit over consumer savings.
The lawsuit contends clean energy technologies would have scaled sooner without the defendants’ obstruction, preventing billions in overcharges.
Claims detail coordinated anticompetitive conduct, including halting research and using patent litigation to stifle innovation. Exxon stopped its EV battery project in the 1980s, while Chevron blocked nickel-metal hydride battery commercialization.
Oil companies initially developed solar energy technology but later abandoned it, using litigation to deter new market entrants. Attorney Tracy Emblem noted in a 2010 article that oil companies seized control of solar research and patents.
Proving conspiracy is a significant challenge, say legal experts. “You need to prove an agreement,” noted Gary Mouw of Varnum LLP. Defendants are expected to argue against the specificity of allegations.
Pat Parenteau, from Vermont Law and Graduate School, said uncovering overt evidence of conspiracy is crucial for the case’s success.
Similar claims have been made by states like California, which sued major firms in 2023 for misrepresenting fossil fuel dangers.
Mouw believes Michigan defendants will likely argue a statute of limitations defense. Unlike Puerto Rico, Michigan’s case focuses on ongoing conspiracy and harms, said Aaron Regunberg, director of Public Citizen’s climate accountability project.
“It is an ongoing conspiracy with ongoing harms,” Regunberg noted, suggesting it’s better insulated from statute limitations.
Zephyr Teachout, a Fordham Law School professor, said Michigan’s case appears promising.
The Push to Wipe Out Climate Liability
Michigan’s lawsuit emerges amid efforts by the fossil fuel industry and allies to halt climate liability initiatives.
Cassidy DiPaola of the Make Polluters Pay campaign criticised legislative efforts to shield energy companies, arguing they should defend their actions in court.
Utah and Oklahoma lawmakers introduced bills to shield the fossil fuel industry from climate lawsuits.
In April 2025, President Trump issued an executive order to halt state laws burdening fossil fuel production.
Shortly after, the DOJ sued states over climate superfund laws. Hawaii filed a complaint against oil companies, while Michigan recently diverged from expected climate damages focus.
U.S. District Judge Jane M. Beckering dismissed the DOJ’s speculative suit against Michigan.
Nessel’s office uncovered what they describe as a major antitrust conspiracy during their investigation.
Antitrust experts note Michigan’s case tests traditional antitrust law limits, but it could serve as a new accountability pathway for climate advocates.
“I’m excited to see how this case goes,” said Regunberg, “and would hope it would be a model for similar future suits.”
Zephyr Teachout supports the case, highlighting the longstanding cartel-like behaviors of fossil fuel companies.
Original Story at insideclimatenews.org