Thread

What California is learning from solar panels built over irrigation canals

372 points · 744 comments · Jtsummers

nbf_1995 · 1790086541 · focus · HN ↗
It seems like it would be more effective to simply put all the solar panels in a field, and construct a cheap shade over the entire canal no? The supports in the picture are massive and don't look cheap. Also I would imagine the solar array uses more copper than a similar capacity array just built in a field. You can't daisy chain multiple miles of solar panels together, so you need an extra power line to run alongside the whole thing.
Put the solar panels in a field: The solar array uses less copper. The shade supports don't have to hold up solar panels: Shade supports cost less.
The best reasoning they give is that California has insane permitting requirements, and it takes 1/6 the time to build on developed land compared to undeveloped land.
1. schnevets · 1790111056 · focus · HN ↗
  Anecdotally speaking, I have heard of a massive California solar farm in an undeveloped area that has serious vandalism problems. Junkies will find ways through the fencing at night, strip copper and other materials from panels, and cause thousands in damages and lost energy just to extract enough scrap for a fix.
  Nothing short of a face-to-face security response will deter these criminals, so there it is a challenging cost-benefit balance. At least panels in parking lots and other developed spaces have the benefit of witnesses. I'm sure a 20 foot climb up a steel beam over running water is a decent deterrent as well.
  1. yongjik · 1790127716 · focus · HN ↗
    A few years ago, some foreigners entered a subway depot in South Korea, drew graffiti, and left the country before they were caught.
    South Korea put a notice on them on Interpol. At least one was arrested (at an airport in Romania), though I couldn't find any follow-up article on what happened to him. I hope he got to tour the inside of a South Korean jail.
    A society should be willing to put resources to protect is public infrastructure. In the long run, it will also be cheaper than fixing the same thing a hundred times, everyone enjoying second-grade service, or both.
    no-name-here · 1790129943 · focus · HN ↗
    The U.S. locks up a far, far, far higher rate of people than any other advanced economy. The U.S. locks up people at 5x the rate of South Korea. Whatever the difference is, it’s not because the U.S. is unwilling to punish people.
    <a href="https://en.wikipedia.org/wiki/List_of_countries_by_incarceration_rate" rel="nofollow">https://en.wikipedia.org/wiki/List_of_countries_by_incarcera...
    phil21 · 1790131880 · focus · HN ↗
    > The U.S. locks up people at 5x the rate of South Korea. Whatever the difference is, it’s not because the U.S. is unwilling to punish people.
    The difference is in consistency in enforcement and general background crime rate.
    If you have a nearly guaranteed chance of getting caught doing something, the punishment almost doesn't matter. If every single time you went over the speed limit you got a $500 fine 100% guaranteed, there would be effectively zero speeders ever. If you have a 1 in a million chance of getting caught but the punishment is 10 years in prison - there will still be plenty of speeders all over the place.
    Humans do not do well with estimating risk on low probability events. We are all just big children in the end. Consistency in consequences are what actually matters, not overly harsh punishment.
    no-name-here · 1790138126 · focus · HN ↗
    What would that look like - increasing the number of US police officers by 2x etc. to ensure they catch every person who commits any crime? Reducing the rights of those accused of a crime to ensure they don't skate?
    conductr · 1790139911 · focus · HN ↗
    I think you have to start with increase policing so that there’s a high chance of being caught. In the US, 2x is nowhere near enough given the size and number of street lights available to vandalize.
    We have literal high tech surveillance equipment being vandalized at scale with not many people getting caught. Referring to the Deflock movement

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