Power tensions in US

The sun sets behind power lines in Carlsbad, California July 24, 2006. A heat wave continues to strain power with the California Independent System Operator (ISO) calling a 'Stage 2' power emergency and warning that without conservation, rolling blackouts are likely. Record high temperatures are forecast to continue.

Con Edison workers check a service box in the Queens borough of New York as they work to restore power Monday, July 24, 2006.

Two kids smile after receiving water and food provided by the American Red Cross in northwest Queens, New York of the United States, July 24, 2006. Power was slowly being restored to residents in northwest Queens on Monday, but about 12,000 to 16,000 people in the area were still without electricity for the second week.

Residents are seen in a park to evade heat in northwest Queens, New York of the United States, July 24, 2006.

Locals receive water and food provided by the American Red Cross in northwest Queens, New York of the United States, July 24, 2006.

Locals wait to receive water and food provided by the American Red Cross in northwest Queens, New York of the United States, July 24, 2006.

Residents sit in a park to evade heat in northwest Queens, New York of the United States, July 24, 2006.