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So, in doing a bit of research from a link in one of the other comments, this is lcos, levelized cost of storage. I understand that to be roughly equivalent to the marginal cost of using it, including the capex divided over the unit volume. That same article uses $125/kwh as the capex, which is in line with your (and my) expectations of the cost to install.

$65/mwh works out to $0.065/kwh, so that makes sense. Effectively you can read this as "it costs $65/mwh to store and then consume electricity using these batteries"


You’re right, upon further review you can get budget Lifepo4 batteries shipped to your door from Amazon for as low as $75/kwh, which includes cables, a BMS, and various Bluetooth connectivity. So $65/kwh seems fairly reasonable for raw battery capacity in very large quantities.

But now it’s time to better understand why a Powerwall or other wall-mounted units are so much more expensive. I understand UL-listing costs, marketing, warranty, and other things are thrown in, but it’s $75/kwh versus $1000/kwh, a 13x difference.

If even at a $100/kwh price point all homeowners need to get 10-20kwh in batteries just to help peak shave the grid and save tons of money since batteries will be a fraction of the cost of grid power.


Because Tesla wants their ~25-30% gross margin on Powerwalls.


Oh man, I've been playing with GCP's vertex AI endpoints, and this is so representative of my experience. It's actually bananas how difficult it is, even compared to other GCP endpoints


If it matters to you, Reolink is a Chinese owned company. Not passing judgement one way or another, but if avoiding Unifi over the remote incident matters, I could see this factoring in as well.


> If it matters to you, Reolink is a Chinese owned company.

It does matter to me. Because I am an American, my greatest risks (actual and theoretical) are from American entities.

Conversely, China has little actual power to negatively impact my life. I am most comfortable (and arguably safer) with Chinese gear.


Separate vlans for iot devices with strict firewall rules is generally enough to mitigate the threat of most iot devices phoning home i think. We’re already in the territory of hobbyists who should be able to manage that with these suggestions like ubiquity and frigate.


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This is exactly the system I would have designed!


Nitpicking on the mechanic point, but this is pretty common, just not at the same level of detail as medicine. Certain brands, models, and parts are more likely to fail in certain ways, so if a model comes in with symptoms of a known, high frequency problem, many times that work will be done first rather than taking more of the car apart to inspect individual parts.

Certainly I didn't think there's huge bodies of work on those statistics the same way there is for medicine, but any car repair forum online will give you some sense of this


Imagine that your reputation didn't matter, getting sued was out of the question, and there was no criminal liability: your job, backed by the government, is to be employed by as many tech firms for as long as you can, you'd probably work pretty hard on coming up with a reasonable but very good resume and work hard on how to interview well. Now, you're a professional interviewer and might conduct 10x-100x more interviews than your average dev, and have a network of people helping you optimize your cheating.

Given that background, I personally find it unsurprising that they're having success and AI tools are just making it that much easier


Absolutely damning of the tech industry’s interviewing and recruiting process if companies can’t distinguish between a “professional interviewer” (regardless of their nationality) and an actually talented candidate who does one interview a year or so.


I think professional interviewees have more time honing their craft than people that are conducting interviews. It's IMO a similar attacker/defender mechanic as we see in security. Attackers have the upperhand in most cases as they only need to find one or few vulnerabilities on presumably a gargantuan attack surface.


For what it's worth, the article says the exact opposite

  Protip: Look for all-caps PYREX graphics which can either indicate that is vintage or that it’s from Europe, where a company called Arc International owns the Pyrex brand and still makes its cookware out of borosilicate.


I was just editing (thought it funny after I typed it and went downstairs to look)

Thanks for the correction!


It's likely often repeated because if you try driving 55 in a 55mph zone where people are driving between 62-70, it'sterrifying, it feels like you're stopped. Whether the stat is true or not remains to be seen, but intuitively, it makes a lot of sense. Sure, your risk of rear ending someone at that point is probably negligible, but the odds of being rear ended? Hard to say


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