Alva Review-Courier -

INDIANAPOLIS (AP) — Indiana's largest electric utility needs to move faster to retire its aging network of coal-fired power plants and replace them with cleaner, more renewable power sources, environmentalist said.

Duke Energy Indiana officials said they hope to retire all nine of the utility's coal-fired units by 2038 and construct two large natural-gas plants.

"We view this as the beginning of our transition to a more nimble, diversified fleet," said Stan Pinegar, president of Duke Energy Indiana, which serves 840,000 electric customers in 69 of the state's 92 counties.

But the environmental...