Duck Curve

Yotta’s Rapid Electric Vehicle charging system Photo courtesy of Yotta Energy

California Duck Curve Getting Deeper With Solar Growth

As more solar capacity has come online in California, grid operators at the California Independent System Operator (CAISO) have observed a drop in net load (or the demand remaining after subtracting variable renewable generation) in the middle of the day when solar generation tends to be highest. When graphed for … [continued]

What About Florida? Energy Efficiency, Solar Energy, & Regulatory Backwardness In The Sunshine State —…

For several years now, there have been increasing complaints from utilities about the resulting load shape from owners with solar systems. This is the so called “duck curve” which has gotten a lot of attention from utility alarmists. In some sense, it has been a way of claiming that rooftop solar is a profound problem for utilities. We will show here that this problem can be (and will be) solved.

Amazon’s Mighty Wind (Cleantech Talk #38)

Episode 38 of Cleantech Talk kicks off with a discussion of how, while China may be overperforming with its solar panel buildout, those panels are underperforming due to the low air quality there. Which is a polite way of saying that coal-combustion aerosols are reducing solar panels’ electricity harvest — by up to a third! (Dark aerosols, like soot, tend to absorb light; other aerosols such as sulfates and nitrates, reflect light. In both cases, the aerosols prevent light from reaching solar panels below.)