Of course, in most states there is net metering, so it is foolish to store it; feed it to the grid. Storing in a battery will cost you about 15 cents/kWh and more like 30 cents/kWh with Tesla powerwall, so you need to have that large a difference between the cost of power when you store it and when you take it out. It is unusual to have a battery to store all your unused solar output, that would be very expensive. You don't want to store more than you will actually need, and in particular more than you need from 3pm to 9pm or whenever your local high-peak rate is. So it's up to you to measure how much you need then. (You will have solar from 3pm to 5pm or so, a bit later in high summer.)
If you seek home backup, generally you don't want to pay to run your home at full load during an outage. Surely in an outage you won't charge your car, or run your over or dryer, or your air conditioner on full etc. Consider how much power you need when conserving, unless you are expecting an apocalypse style outage. Get enough battery for that.
Few believed it would be pulled off, except the most devoted of Tesla fans. However, the point is they did promise unsupervised, which is the biggest milestone in this technology, and they didn't get there. It's like promising a moon landing and delivering a New Shepard suborbital flight. Yes, it's a safety driver. A safety driver is, in spite of the vocabulary, not expected to drive. They supervise and intervene.
It varies from country to country. 3 phase can let you send more power with the same copper, but it requires the connector be larger and with more pins, so there are arguments each way -- even in the countries where 3 phase is common. Most EVs don't come with onboard chargers bigger than 7-10kw, which can be readily done single phase, but is somewhat easier with 3 phase. But very little reason to use a 3-phase plug standard in North America. Only a few stations would provide it and almost no homes. Most people never charge at public level 2 stations.
Only the plug in North America is in question here. China has its own different plug too. In NA, 3 phase is uncommon. But for any AC plug, what matters is the rating of the car's internal charger. There are USA cars that take 18kw single phase, with Tesla's smaller connector.
No because when Tesla's system has a problem, as my car does a few times each trip, I grab the wheel. And waymo also has cars with safety drivers but also has run a million miles without one. Run Tesla FSD with no intervention for a million miles and it would have thousands of accidents. Thousands, where it was at fault. Waymo had 2 or 3 minor parking lot style no damage contacts in their million. Not thousands
If you read the press yesterday you would see that the large majority of articles took Tesla's report at face value, so it needed much more explaining than you imagine.
That's not correct, they are no more liable than carmakers are if you are using cruise control.
Unless you can show in court that their system was defective. It is designed to not be able to do the full driving task, to need interventions. It performs as designed.
Forbes pays contributors, who do so by invitation by a Forbes editor who likes their writing. Forbes also allows companies to pay to put in stories, but they are clearly marked as such.
It's amazing what people will write by assumption without knowing.
And yes I believe in the value of the technology. But also in the truth which is why I was very harsh on cruise in the story earlier this week.
The problem is the bus front was occluded and thus its position and vector were estimates of growing uncertainty, not direct readings. It is not understandable that an estimate with high uncertainty took precedent over a fully reliable direct reading from multiple sensors
Strategy is valued by a lot of viewers, myself included. As I pointed out the victory by the mathematician Anna Kiesenhofer in cycling was amazing to see, even though there was no dramatic race, because she used more math and strategy than the others.
But it was still better because it was a race, and you could see how far behind the others were. But a nerd is going to love that race.
It's just not the same when they race with the clock, and of course it takes a long longer. It is the most fair, which is what you want from the standard of making an academic measurement of athletics, and that is valuable. But in terms of spectator excitement per unit time, it's just too far down the list.
My error. I thought I had the premium service as an Xfinity customer, and the ads were just showing up because these were sports recorded live. I definitely would have done that knowing. Well, almost definitely. Streaming DVR is just a shadow of what local disk DVR is. I can seek instantly at distances I configure. I can fast forward and see what's happening. I can do 3x fast forward that's perfectly smooth, and 2x fast forward with pitch adjusted audio -- that's so nice for a lot of sports or for boring sections of certain sports.
So commercial free Peacock would only get so far, and downloading the stream and playing it locally is still better. If you do it right, you can even do standard DVR -- watch the stream while it is downloading, so you are only a short distance behind live, and avoid spoilers.
Nice to see this show up on HN. I wrote an addendum, not in that post...
Olympic rant #2: Fake "team" events. We now see a lot of events promoted as team events where the team members need never have practiced together and don't even meet each other at the venue necessarily. These are team events where just add the scores of various competitors, or "relays" where there is no baton, nobody touches. Sadly to me, this has become a common form for mixed events. I have been wanting to see more mixed events, but I wanted to see mixed events where the men and women actually work together, like pairs skating or mixed doubles tennis or curling.
It's very easy to make a mixed team event in a real team sport. You can make a rule like "3 men and 3 women on the ice."
I understand that in some sports, like swimming, you can't have a baton, but it would be nice if they had to touch or something. In the downhill sports they can't easily physically meet. Mixed team snowboard cross had the man set a time, and that controlled when the woman was let out of the gate (later.) But all this is better than the sports where you just add scores and they aren't really a team at all. These events are just an excuse for nationalism. They will always be won by big countries which have the size and budget to send a group of high level athletes good enough to get the best average score.
While computer camera/laser judged pole vault/high jump would certainly be possible, and much quicker, they would be different in that the visible bar clearly creates a target in the mind of the athlete. It also has the advantage I talked about -- the spectator can immediately see, with no clock, judge or computer to aid them, if they cleared the bar.
As I wrote, not all sports should be for the spectator. But if the purpose of the competition is to be watched, as is the case in the Olympics, that is what to design for.
Reality is all perception systems occasionally wink out, but they also have object permanence algorithms that know they are not actually doing that. Humans are not so different. You see a car coming up behind you, you look away, you presume it didn't vanish. A good visualization would be to show where you predict the object is in a different colour.
If you seek home backup, generally you don't want to pay to run your home at full load during an outage. Surely in an outage you won't charge your car, or run your over or dryer, or your air conditioner on full etc. Consider how much power you need when conserving, unless you are expecting an apocalypse style outage. Get enough battery for that.