Dive Brief:

• Some environmental groups and the owners of the 2,250-MW coal-fired Navajo power plant in northeastern Arizona are urging the Environmental Protection Agency to accept a plan to retire one of the plant's three 750-MW units.
• The plan's supporters say it is better than EPA's proposal that selective catalytic reduction equipment be installed at the plant. The plant's owners say that would cost more than $1 billion.
• Sierra Club and other groups argue that the plan to retire a unit at Navajo does not meet the requirements of the Clean Air Act's regional haze rules. The groups want a “more comprehensive” plan from moving away from coal generation near the Grand Canyon.

Dive Insight:

EPA is expected to decide later this year on the proposal for the Navajo plant. The federal agency has approved a similar proposal for the Four Corners plant and is reviewing another similar plan for the San Juan plant, both in New Mexico.