Hartford Courant: Connecticut will reap more than $4.6 million to promote energy conservation and clean technology from the latest sale of greenhouse gas permits for power plants, the first such program in the nation to put a price tag on emissions of carbon dioxide. A consortium of 10 Northeastern states held its second carbon dioxide auction last week, a key step in creating a market-based program to cut the emissions that contribute to global warming. Advocates say the regional program could be a …