Tag: "solar eclipse"

08/08/17

  11:23:00 am, by Jim Jenal - Founder & CEO   , 354 words  
Categories: All About Solar Power, Solar Events

Let's not be Fuelish During the Eclipse!

Unless you’ve been living in a cave, you know that there is a total eclipse of the sun set to cross the United States from Oregon to South Carolina on August 21st. This is a Really Big Deal as the next total eclipse to come to the U.S. won’t be until 2045!

Total solar eclipse

Baily’s Beads effect taken Dec. 4, 2002. Credit: Arne Danielson.

So there is a great deal of excitement around this event, but might there also be a “dark side"?  (Sorry, couldn’t resist the pun.)  Here’s our take…

The eclipse in California will not be total (unlike for our friend and former colleague, Laurel Hamilton, who is now up in Bend), with coverage ranging from roughly 76% in Northern California to 62% here in SoCal during the hours of roughly 9 to Noon.  But that will still have an impact on solar energy production in the state, and that could mean that the California Independent System Operator (CalISO) might have to rely on more fossil fuels during the two-plus hour eclipse window.

How big an impact will this have?  It is 10:30 as I write this and according to the CalISO website, at this moment, solar is producing 9,119 MW (at utility-scale plants - that total does not count rooftop solar) which amounts to 27% of the total load being served.  That means that on the 21st, solar production could be reduced by as much as 6,930 MW, leaving it up to gas-fired plants to fill that gap.  Unless…

Unless we find a way to cut our usage by a similar amount during that period.  Given that we are talking about an August day, that might be tough, but every bit helps.  That is why the California Public Utilities Commission (CPUC) has set up a pledge page to encourage Californians to take steps both before and during the eclipse to lower their demand.  (We just made our pledge - we are shutting off unneeded lights and the A/C during, and swapping out to more LEDs before.)

As of now, we are the 259th pledge to be made.  Let’s drive that number up, shall we? It’s easy, just click on the button below!

Take the Pledge!

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Jim Jenal is the Founder & CEO of Run on Sun, Pasadena's premier installer and integrator of top-of-the-line solar power installations.
Run on Sun also offers solar consulting services, working with consumers, utilities, and municipalities to help them make solar power affordable and reliable.

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