POWERnews

A new rule for sulfur dioxide (SO₂) set by the Environmental Protection Agency (EPA) on Thursday sets a new one-hour health standard, changes monitoring requirements, and modifies the Air Quality Index. Full implementation of revised primary National Ambient Air Quality Standard (NAAQS) for SO₂ by 2020 could cost the electric power industry nearly $700 million a year, the agency said.

A report released last week by the North American Electric Reliability Corporation (NERC) and the U.S. Department of Energy (DOE) identifies cyber attacks, pandemics, and electromagnetic disturbances as “high-impact, low-frequency” (HILF) risks that could significantly affect the reliability of the North American bulk power system.

The ability to detect and track the movement of carbon dioxide (CO₂) in underground geologic storage reservoirs—an important component of carbon capture and storage (CCS) technology—has been successfully demonstrated at a U.S. Department of Energy (DOE) New Mexico test site.

Southwestern Electric Power Co. (SWEPCO) and the Arkansas Public Service Commission (APSC) on Tuesday asked the Arkansas Supreme Court for a rehearing, after the high court last month overturned a 2007 permit awarded by the PSC to the utility’s 600-MW John W. Turk, Jr. power plant. SWEPCO said that it plans to continue construction of the $1.7 billion project—the nation’s first ultrasupercritical coal plant—to meet its commitments to serve the company’s customers in three states.

CMS Energy subsidiary Consumers Energy last week announced that it is deferring the development of an 830-MW coal-fired power plant planned for Hampton Township. State regulators had last year approved an air permit for the $2 billion-plus project on the condition that it use stringent emission controls and that it was ready for carbon capture and sequestration when the technology was feasible.

Mississippi Power Co. on Thursday said it would proceed with plans to build a 582-MW integrated gasification combined cycle (IGCC) plant as proposed in Kemper County after the Mississippi Public Service Commission (MPSC) relaxed restrictions it had placed on the project.

The U.S. Court of Appeals for the Fifth Circuit on Friday dismissed without rehearing, on procedural grounds, a controversial climate change “public nuisance” case in which 14 individuals had filed a class-action lawsuit against insurance, coal, and chemical companies, seeking relief for property damages resulting from Hurricane Katrina.

Depressed power demand due to a slow economic recovery will continue to be a major driver affecting bulk power system reliability during the summer months, the North American Reliability Corp. (NERC) said last week in its annual summer reliability assessment report.

Michigan regulators on Friday denied Wolverine Power Supply Cooperative’s air quality permit for a new 600-MW power plant, fueled primarily by petroleum coke and coal, in Rogers City. The state’s Department of Natural Resources and Environment (DNRE) decision was based on findings of the Michigan Public Service Commission (MPSC), which said the company failed to demonstrate the plant was needed to meet future supply.

Nonprofit Ohio utility American Municipal Power (AMP) last week said it would begin shutting down the 213-MW Richard H. Gorsuch Generating Station (RHGS), a 1950’s vintage coal-fired power plant located near Marietta, Ohio, as part of a New Source Review (NSR) settlement with the Environmental Protection Agency (EPA) and the Department of Justice (DOJ).