Heat wave puts California on Power Watch

Despite a small likelihood of blacouts, Californians are being asked to conserve energy today:

Soaring temperatures have caused the Independent System Operator to issue "power watch" for the day...

Demand for electricity across the state may set a new record today -- surpassing the one-day record set less than three weeks ago.

The tight balance between supply and demand for electricity in California underscores the need to expand the former and contrain the latter.