Canon PowerShot G10
ƒ/5
24.978 mm
1/2,000
80

Perhaps a puzzle…

Puzzle Series: What is this, or what do you want it to be?

21 responses to “Black Sheep”

  1. Reflecting solar array?

  2. Specifically a solar power tower taken from the tower. Exactly which tower is a harder question.

  3. Concentrating Solar Power system? Reflecting heat and light to a central tower?

  4. That didn’t take long to guess… I think it’s been identified by the first three comments and the fourth & fifth comment made an accurate observation as well. Nice photo, Steve, but I doubt you were at the top, where you would have surely been made into Estonian Toast™.

  5. Precisely right…. I feared this would be too easy…. But yes, "exactly which tower" should be the question… and I think it can be deduced from the photo…

  6. Was it some Bond film in which our hero was trapped and strapped atop a tower at a solar array while the reflector panels slowly, unceasingly turned toward him, sure to fry him? My memory fails me….

  7. It is from the BrightSource Energy project. Perhaps the Luz Power Tower (LPT) 550 energy system

  8. And I guess it’s the facility in Israel’s Negev Desert

  9. One day these will hopefully be replaced with Estonian Crystalsol photovoltaic technology.

  10. what I first thought was corrosion turns out to be the reflection of the mountain in the area.

  11. whatever tower it is, stay the heck away from the focal point!

    ps: have you ever seen a study that shows the relative yield per square Km of reflective arrays Vs photovoltaic Vs Luz-type curved mirror fluid systems and their operating economics (initial cost, maintenance, etc.)…

  12. I’ll guess the first 100 MW one at Ivanpah.

  13. Ahhh, maybe it is the new one in the Mojave desert at Ivanpah, and it’s white because it’s under construction and they haven’t pulled the covers off the reflectors. The black on has had it’s cover taken off, but is not pointing at the tower because they are working on it???

  14. bingo mebooyou – your first three comments were spot on. This is the BrightSource solar thermal research facility in the Negev Desert of Israel. And Shamagu nailed the big picture within minutes of my posting.

    Each of the heliostats you see here are flat mirrors (cheap) that tilt on two axes to aim the sun at a 60m-tall boiler tower

    Brightsource tower

    They are not blinding because the photo is taken from part way up the tower, below the focal 1000°F hotspot. One mirror is offline.

    A 100MW plants uses 50,000 of these mirrors, and the company is actively developing 4,000MW of solar projects in the U.S., including the two largest solar contracts ever (about $10B).

    sbove: yes, but I don’t have it with me. Their analysis shows them to be the lowest cost and most reliable of the solar technologies. Compared to a a parabolic trough system, the levelized cost of electricity from a tower system will be 30% to 40% lower (details).

  15. It’s funny to me that the thing looks like an oil rig (which it eventually replaces)

  16. Hmmm. This does raise the question of what else you can do with a half gigawatt of steerable thermal power beam. At 40,000 feet I figure you can get most of that power into a football-field size object. How fast can those mirrors track?

  17. Interesting…. with that flux, perhaps tracking would not be needed, but you could raster scan the sky… =)

    I think a portable femtosecond laser might be a bit more elegant for "remote machining", especially for supersonic subjects…

    Raydiance

  18. Great photo. I’ve used it in this post on TreeHugger.

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