Coal

AES Corp.’s subsidiary Dayton Power & Light (DP&L) plans to retire six coal-fired units representing about 390 MW at its 414-MW Hutchings coal-, gas-, and oil-fired plant in Miamisburg, Ohio, by June 2015 as a result of existing and expected environmental regulations, including the Mercury and Air Toxics Standards (MATS). The news comes on the heels of Indianapolis Power & Light Co.’s (IPL’s) announcement that it plans to retire 600 MW of coal-fired capacity to comply with environmental rules.

Domestic content requirements that require some generators to source up to 60% of equipment from the Canadian province of Ontario under its feed-in-tariff (FIT) program are inconsistent with international trade rules, officials from the World Trade Organization’s (WTO’s) highest court said on Monday.

Panelists at a House hearing today refuted varied claims concerning if and how increased natural gas and renewables generation pose widespread challenges to the reliability of the electric grid. Some pointed to ineffective rules in the restructured wholesale power market and the failure of conventional power plants as being more of a threat to grid reliability.

Last year’s stampede toward gas in the power sector is moderating for 2013, as higher gas prices cut into the economic incentives supporting coal-to-gas switching.

Navajo Nation President Ben Shelly signed a land lease extension on April 30 for the 2,250-MW Navajo Generating Station, but not before adding several amendments to the agreement. The early lease renewal with the Navajo Nation must be in place before plant owners could consider making future investment in expensive new air quality control equipment.

Drought is a serious vulnerability for the power sector, witnesses testified at a full committee hearing held last week in the Senate to assess the impacts of drought on the power and water sectors. Members of the panel invited by the Senate Committee on Energy and Natural Resources offered a number of possible solutions for federal agencies and power companies that could mitigate adverse effects from drought.

India’s Reliance Power in March synchronized the first of six 660-MW units of its Sasan Ultra Mega Power Plant (UMPP) in the state of Madhya Pradesh, readying it to supply power to 14 distribution companies across seven states. The plant (Figure 1) has been hailed as India’s first supercritical project to integrate a coal mine—an important achievement in a country that is battling chronic coal shortages. Though India has large coal reserves, domestic mining companies are struggling to keep up with demand needed to sustain its existing coal plants, which account for 55% of its generation.

My career began as a results engineer testing large utility boilers. Ever since that first assignment, I have remained interested in the details of how the measurement and control of the furnace fuel and air inputs can make a huge difference in overall boiler performance. Given that plant operations and maintenance (O&M) budgets are slimmer today than in recent memory, my experience is that targeted performance testing can provide important feedback for prioritizing maintenance expenditures. The combination of plant testing and targeted O&M expenditures provide the best opportunity for efficient and reliable plant operations. I call this approach to plant efficiency improvement “performance-driven maintenace.”

By the end of 2013, one year ahead of its goal, the province of Ontario will be virtually coal-free—a first for a North American jurisdiction. How did the most populous part of Canada go from 25% to 0% coal-fired generation in just a decade, and what does this phaseout mean for the rest of the world?