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The Supreme Court’s reliance on the “major questions” doctrine to limit EPA’s power plant greenhouse gas authority is intensifying claims that the doctrine should also limit GHG rules that encourage vehicle electrification, though many experts say such claims could face a high bar given the agency’s clear authority on tailpipe emissions.

A free-market energy group that supports fossil fuels is suing EPA over its decision to reject petitions seeking to overturn the agency’s landmark 2009 greenhouse gas endangerment finding that serves as the basis for its climate regulations, a move that is likely to draw opposition from both industry and environmental groups.

A New Jersey utility regulator is touting the state’s novel approach to deploying transmission upgrades needed to integrate offshore wind energy, arguing the approach could serve as a model for other states on the East Coast and elsewhere that are aiming to significantly grow the nascent renewable energy sector.

Environmentalist and industry attorneys say they are pleased that the Supreme Court’s landmark ruling explicitly preserves EPA’s authority to regulate power sector greenhouse gases, though they are also anxious that the ruling does not detail the scope of such authority, including whether it allows a rule based on emissions trading or co-firing.

The Supreme Court’s ruling citing the major questions doctrine to place new limits on EPA’s ability to curb power plant greenhouse gases is reinvigorating calls for Congress take its own steps to curb emissions as many see the ruling broadly hampering the agency’s activities.

The Supreme Court’s just-issued decision restricting EPA’s Clean Air Act authority to regulate power sector greenhouse gases is elevating the importance of the judicial “major questions” doctrine that imposes strict scrutiny on agency rulemaking, even as the conservative majority is not fully outlining the limits of the agency’s authority.

The Supreme Court is restricting EPA’s authority to regulate greenhouse gases from existing power plants, the second-largest sector of emissions in the country, finding under the “major questions” doctrine that the Obama EPA’s standards that relied on generation shifting were unlawful under the Clean Air Act.

An EPA public hearing on California’s request for preemption waivers for heavy truck rules limiting nitrogen oxides (NOx) and imposing sales requirements for zero-emission models is sparking a clash between industry and environmentalists over whether Clean Air Act lead time requirements bar the state from enforcing its programs.

Environmentalist plaintiffs are challenging the Interior Department’s (DOI) decision to restart onshore oil and gas lease sales, arguing officials in the Bureau of Land Management (BLM) unlawfully failed to assess the cumulative climate change effects of the decision under the National Environmental Policy Act (NEPA).

After the U.S. Postal Service (USPS) announced earlier this month it would conduct a supplemental environmental review of its contested plan to overhaul its fleet of delivery trucks with mostly gasoline-powered models, officials are now weighing the prospect of settling litigation over that move brought by environmentalists.