Planning of the electricity transmission system generally focuses on the pros and cons of providing generation close to the source of the power demand versus remote generation linked via the transmission system. Recent electricity supply problems in the western United States have renewed...

This paper considers how moderate actions to slow atmospheric accumulation of greenhouse gases from fossil fuel use also could reduce conventional air pollutants in the United States. The benefits that result would be “ancillary” to greenhouse gas abatement. Moreover, the benefits would tend...