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Found a home for this guy, completing our transportation shrine.pic.twitter.com/eH0JSBRZ94
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Interesting unknown fact: this is actually the cause of most supernovas. Kardashev Type II civilization forgets to turn on time-of-use pricing and...pic.twitter.com/KCTCrZAOKS
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if the cells are good enough they radiate the light back to the sun.pic.twitter.com/R7XftMN6pv
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Folks I might have to get really into model trains now. I can’t wait for the real thing!
#caltrainpic.twitter.com/MOcrSIO8un
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Does anyone know where the grounding wire goes on an airplane?pic.twitter.com/QES0MZxSaZ
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This is what it felt like to make solar cells in grad school. h/t
@kottkehttps://vimeo.com/382160612?ref=tw-share … -
Yeah, it’s more like of a HAL 9000 pulse though. Probably half the lumens too.pic.twitter.com/0ZvcqCuL6r
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This is great, thanks Jose! More evidence that First Solar is amazing... the slope of this curve is close to 1% per year, absolute!pic.twitter.com/MQJQiSEddZ
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Zoom in for few highlights: 1) Silicon seems to have reduced $/W without sacrificing efficiency. 2) In doing so, it's bypassing the predicted "Gen 2" of cheap low-efficiency solar. 3) Silicon did seem to be hit a wall in cost (2012?), and is now relying on improving efficiency.pic.twitter.com/v7Ikj66pqN
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I wanted to see how our thinking has measured up to recent trends, so I plotted some data from the
@BerkeleyLabEMP "Tracking the Sun" report. They only report distributed PV systems (< 5 MW), but I imagine the trends are general (I'd love to see utility data if anyone has it).pic.twitter.com/c7yRe0NRb3
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Sit down my friends, and let me tell you a story... Many years ago I was an impressionable young grad student, and I remember seeing this chart. We often used it to justify our pitch for next generation photovoltaics. [Conibeer, G. Materials Today 2007, 10 (11), 42-50.]pic.twitter.com/zcpg2pk8yu
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Um, guys there’s a truck in the way.
#ButWhatAboutTheScooterspic.twitter.com/6ORGNsk9dw
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Two of my favorite things: bikes and solar
#NewProfilePicpic.twitter.com/rCxlrrtA40
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One more thing. We can simplify the curves a bit by only taking the top 20 peaks from the Fourier transform. You lose some detail (especially in the weekly storage domain), but it's a bit easier to see the important bits.pic.twitter.com/kcxtCVAC4B
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You can also use this to reconstruct the time series, but for selected frequency bands. This lets you see the shape of our short-duration, long-duration, and seasonal storage needs. I'm especially interested in the "weekend dip" -- never seen that before. (I'm sure others have!)pic.twitter.com/oSvDsPFpNs
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This is kind of neat: I was wondering what the Fourier transform of electricity grid load would look like.
@California_ISO has five years of hourly data, so here's the raw trace and the transform...pic.twitter.com/BiB3GH5y9E
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The Los Gatos Creek trail is a hidden gem, complete with paved paths, gravel paths, a tiny bit of single track, and a set of miniature train tracks??pic.twitter.com/XgsJ3vzWYc – mjesto: Vasona Park
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