As states and stakeholders evaluate compliance options under the U.S. Environmental Protection Agency’s proposed Clean Power Plan, many recognize the potential economic benefits of market-based strategies. In some states, however, market approaches trigger administrative and political hurdles. A new policy brief by the Nicholas Institute for Environmental Policy Solutions offers a compliance pathway that allows states to realize the advantages of multistate and market-based solutions without mandating either strategy. With the common elements approach, states develop individual-state plans to achieve their unique emissions targets and give power plant owners the option to participate in cross-state emissions markets. Power plant owners can transfer low-cost emissions reductions between states whose compliance plans share common elements--credits defined the same way and mechanisms to protect against double counting. The common elements approach offers the following benefits: (1) allows cross-state credit transfers without states negotiating a formal regional trading scheme, (2) leaves compliance choices to power companies, (3) builds on existing state and federal trading programs, and (4) maintains the traditional roles of state energy and environmental regulators.