Advanced forecasting tools are already improving solar and demand predictions by over 30%,' writes Schneider Electric's Frédéric Godemel.

It looks like one side of a duck. And grid operators call it the duck curve. If you trace the net daily demand for energy in California it starts at midnight with the tail, then it follows the belly ...

If the sun isn't shining and the wind isn't blowing, then ramp up the fossil-fuel power plant to fill the gap. But it's not that easy or efficient to run a power grid that way, said economist Daniel ...