Electric company load factors across the middle of the day.
This data comes from March, and it comes from California. But it still shows the general trend all the time, all over the place.
Solar panels, feeding power back to the grid, reduce demand for conventional power when the sun is overhead. But then there's a big ramp-up in power needs in the afternoon.
This chart shows less and less demand at midday, more and more later on.
The Duck Curve.
More data from California, this showing changes to the demand curve as time goes buy and more solar goes in. There are indications ratepayers are moderating the curve themselves by turning stuff on at peak times.
Please note the vertical axis doesn't start at zero, which exaggerates the problem, but still. Power company technicians and their managers are notorious nationwide for being slow to accept third party providers. But this shows they have real concerns, because the wind dies down and skies are cloudy, who makes up the difference? They do.
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