Anti-nuclear activists can be forgiven for launching into a chorus of "na na hey hey" today as another new U.S. reactor project bites the dust. The latest Nuclear Retreat comes from Constellation Energy which has ditched plans for a third reactor in Maryland at the Calvert Cliffs site. Constellation was looking at a $880 million price tag even with a federal loan guarantee from the Obama administration. Constellation's withdrawal is another blow for its French partner, EDF, already struggling with its reactor project on the French Normandy coast which is over-budget, behind schedule and beset with technical problems. It also deals a further blow to Areva whose flagship EPR reactor was destined for Calvert Cliffs. Beyond Nuclear also released a press statement on the Constellation decision.