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That paper is not interesting, it's sad. It's so full of errors I don't know where to begin. Nonsense. Wind and solar are prone to common mode failures in entire continents at a time. The phenomena causing this are so common as to have their own traditional names: "lull" and "cloudy". I...

Not quite. If you agree we need nuclear for baseload, then we're getting close to agreement. My position is that we need nuclear for baseload, renewables with storage for load following where licensing nukes for that role is too expensive, renewables with storage for peak demand, and gas...

A suggestion for generating electricity without CO2 emissions: The problem that needs to be solved is to always be able to meet demand exactly, without emitting CO2, with as small an environmental impact as possible, and it needs to happen as soon as possible. Base load can be handled by...

That just reduces the risk of overgeneration. It doesn't improve availability at all. I agree to that, of course. But that situation will not continue indefinitely. Currently, there is still extra balancing capability in the grid, so backup on a grand scale is not yet necessary. That will...

Assign a cost to CO2 emissions. Make balancing capability a tradable asset. Make availability guarantees a tradable asset. Require intermittent sources to buy balancing capability and guaranteed availability. Let the market sort it out. Self generation is ok, but you would have to buy balancing...

That's because a capacity rating is kind of irrelevant for a technology that just produces power, and continues to do so, day in and day out, for 60 years or so (ok, ok, there will be planned outages and the occasional hiccup, but these things happen one at a time). If you want to replace the...

Statement A: "Battery storage can be used to capture the peak solar output and store it for use when the sun is below the horizon, and this is economically attractive given that the required reliability is supplied by the grid for free." Statement B: "Battery storage can be used to make a power...

And you base that statement on exactly which N.U.M.B.E.R.S, nwdiver? You speak as though that curve was a divine law, outside of human influence. It isn't, it is the result of current policy, which massively subsidises essentially useless wind and solar power, by allowing them to parasitize...

Thanks for that. There isn't much to understand or argue about. The German data is real, and they have so much renewables that it covers the entire demand when conditions are favorable. Still, they have weeks of output well below 10 %. Yes, currently no business case for large scale...

Well, I guess he assumed that people would read more than just the chapter titles. What part of "almost zero solar output and almost zero wind output for a week" do you not understand? An estimate of the cost of your nice and shiny storage system is precisely what I'm working towards. Before...

First he breaks down and estimates current British energy consumption. The 40 kWh/d figure on page 103 was first calculated on page 29. This is in the first part of the book, called "Numbers, not adjectives". It's important to first find out where we are, to be able to improve the situation...

No, you really need to read the whole book. MacKay is a doctor of physics and professor, and was the chief scientific advisor to the UK Department of Energy and Climate Change until 2014. He's a careful scientist. He first breaks down and estimates all of Britain's energy consumption. Then he...

You wrote that wind and solar compliment each other very well. I showed that they do not. I am trying to establish the facts we need to be able to get an idea of the cost of the grid you propose. I'm aware that the energy is there, but the fact that there are vast amounts of energy out there...

I'll get to that eventually. I had no problems reading them. Are you sure you didn't just close your eyes? I beg to differ. Take a look at these two graphs from page 3 of this article: Renewable Intermittency Is Real | POWER Magazine This proves that the combination of wind and solar is...

I wrote this in response to Robert.Boston yesterday: "True, but that argument fails to take into account the fact that mechanical problems and fuel supply issues usually happen one at a time, whereas wind and solar frequently disappear completely across vast regions." There is a big...

Yes, but by a surprisingly small amount. I didn't say that interconnection doesn't decrease variability, I said it's a myth that you can get baseload quality power by interconnecting. And that's precisely the problem. No matter how you connect the wind farms, there will still be periods of...

This is a myth. This guy analyzed actual wind data to see what would happen if one somehow managed to interconnect three wind generation areas on different continents. The impact on variability is minimal, there is still a 7 % probability of the combined output being below 10 %. And the costs...

40 % risk increase is shockingly high. I'm surprised it's that bad. Seems like exhaust is the culprit. No mention of road dust. Updated the first post to emphasize this.

15 year study at Umeå University, 2000 participants, 300 cases of dementia in the study population. Published in Environmental Health Perspectives journal on July 31, 2015. Those living in the most heavily polluted areas had 40 % increased risk of dementia. 16 % of the cases could be directly...

I love smooth stops and I hate creep. Creep also makes the brake jolt impossible to avoid. I can get a completely smooth stop with my Model S, but only when the terrain is so flat that it will not roll by itself. I do that by gradually releasing the brake pedal as it slows and releasing it...

It certainly shows the power consumption of both AC and battery heater, so it's not exclusively the drive inverter. *edit* I just checked - I can see the consumption of the power steering. Just switch off AC and turn the wheel left and right while parked, you can easily see the needle twitch. So...

Looking at the middle picture in chickensevil's post, I'd say it's somewhere around 10 to 15 % of the way to the next mark. So it's showing somewhere between 340 to 355 kW.

There are five marks, 20, 40, 80, 160, 320. Divide the numbers by ten and you have the five first powers of two. Example: The fourth mark has the value 10 * 24 = 160. The midpoint between 320 and 640 is 10 * 25.5, which is 453. One quarter above 320 is 10 * 25.25, which is 381.

The cells tolerate much higher discharge current than charge current. @apacheguy - when I tested this the other day I did have the AC on, but set at 20 deg C. Outside temp was also 20 degrees C, so it shouldn't have been doing anything.

apacheguy: At what speed? I assume that reading was from the log - what did the display show? Electrical components are usually current limited. E.g. there may be a max current rating for the battery, inverter, motor etc. The software will then likely limit based on amps, without regard to...

jerry33, notice how in the 4.9 video SoC is so low that it limits power, and the power needle stops well short of 320 kW. Redo that run with 90 % SoC hot off the charger and you'll get a much better time. At 100 % SoC it would be even faster.

Yes, I had the same idea. From somewhere around 120 km/h power started to drop again, it may be past the power peak at 110. If so, it may not have reached full power before well past the peak.

Oops. I said I agreed, but you're right, of course. I did some testing today. I charged from 80 % to 90 % on a supercharger while buying lunch, disconnected and parked away from the chargers as it was finished when I got back. Then I ate for about 20 minutes and left. Ambient temp about 20 deg...

If you look at the DragTimes video, you will see that his SoC is fairly low, around 40 %. Even so it almost reaches 320 kW. It actually limits power and does 0-60 in 4.9 anyway. When I get the dashed "power limited" line I can feel that it's slower (ehrm - less quick) than usual, and I think I...

I don't know why any of this would be surprising. But just as fuel consumption is a very imprecise indicator of performance, so is power at the battery. If we accept that the power meter is accurate, then the dyno measures efficiency, but I would say that is a very interesting measurement :)...

My S85, delivered Sep 2013, slightly exceeds 320 kW on the power meter. A reputable Norwegian tuning shop (RS Tuning Bergen) recently dynoed a 60, S85 and P85 and got 305 hp from the 60, 405 hp from the S85 and 424 from the P. None of them were fully charged. To be fair, they had trouble...

Traditional reactors have no trouble ramping if they have to, but running at partial load will over time result in uneven reactivity in the core, which means that you need a fresh core load sooner. Prism and other fast reactors can ramp up and down extremely rapidly, however. They do so...

Building a stable electricity system with wind and/or solar alone is not possible. You need to include either the cost of a massive backup system or a massive transmission system or both. Wind and solar currently seem inexpensive because they're allowed to use existing generating capacity as a...

Confirmation that the twin chargers deliver 22 kW (click the "charger" plus-sign): Tesla Charging en_EU | Tesla Motors

Interesting. Then it must be the combination of IT and 230 V three phase that is unique to Norway and Albania. I didn't know anyone else used 230 V three phase. Anyway, that you have an N wire to the house increases your chances of getting it to work, I think.

You have 220 L-L 3 phase? Wow, I've always heard Norway and Albania were the only countries to use that. Wonder how many more of us are out there. Do you have an N wire back to the transformer?

A Norwegian MS recently charged at 16 A from a 32 A Type 2 pole. So it looks like the twin chargers will deliver 22 kW, as expected.

You know much more about that than me, I bet you're right :) This is a bit interesting, because it shows how ingrained our ideas of how the world should be is :) This is exactly what we've been trying to explain for years, and what Tesla didn't get: In Europe, 400 V three phase is a common...

Correct. The transformer midpoint is connected to real ground via a spark gap. Each building is directly connected to ground via ground electrode. Only the phases (three wires) are connected to each building. So we don't have any N wire back to the transformer, only L1, L2, L3. A three phase...

Thanks :) I wasn't offended in any way that you didn't mention me, I just wanted to indicate that as I also was pushing for three phase early on, I could say something about the outcome. And that my efforts might have made a difference too... Human nature, I guess. My story is as follows...

I just wrote a little C program that computes sqrt(3) one billion times. On my laptop It terminated after 2.7 seconds. Also, it's a constant, they just need to multiply the voltage by it before displaying the result. But this is all just nitpicking, it just looks a little weird, that's all.

I think you're absolutely right, but they can just multiply the measured number by the square root of three to get the correct value. If L-N voltage is x volt, then L-L voltage must necessarily be sqrt(3)x :) I bought a 32 A type 2 cable made by Mennekes yesterday. It does not have a 40 mm...

I was going on and on about three phase here and to many people within Tesla even before Wido, I believe. But he really took decisive action by organizing the campaign and sending all those letters to Elon. Seems that was what made them begin to take it seriously. Thanks to all who helped out...

And we can then conclude that the stuff about 10 or 20 kW was incorrect - it will charge at the full 16 or 32 A, 400 V three phase, i.e. 11 or 22 kW. BTW, Tesla measures the three phase voltage in a completely non-standard way, between phase and neutral. They should measure phase-to-phase. All...

With nuclear, fossil or hydro, you have to have maybe 15 to 20 % reserve capacity. That's completely different from wind, wave and solar. Wind fluctuates unpredictably between almost zero and 100 % with a period of multiple weeks. There is also a large day-to-day variation. To create a reliable...

Seems to me that Edison fought hard to keep the plant running. Once again, litigation from the anties succeeds in making continued operation unattractive. The decision to close it down was due to several factors. The plant would likely need improvements to be allowed to continue operating...

The "which is worst of ICE and BEV" discussion didn't consider battery recycling. Adding the CO2 emitted during battery production to the BEV life cycle carbon footprint without considering battery recycling yields a skewed result. This has been discussed here before, and I linked to a report...

Mr. Eastwood, I have hands-on experiment for you :) Buy a neodymium magnet (you know, the super powerful kind that you can barely loosen without pliers). Find a piece of aluminium sheet, or even better, copper. No, wait, get one of each. Place the sheet of metal on a table, put the magnet on...

This is not recommended, because when panicing, people tend to stretch both legs forwards to brace for impact. That would depress both pedals. It won't be a problem in Model S, though, as it cuts power when both pedals are depressed. Does it cut the regen? Even though the driver is actually...

I wrote: I could have expressed myself more clearly, let me try again: Tethering the stationary car produces a different result - it essentially turns into Mother Earth with a crumple zone in front. Earth is the heaviest solid object around and *really* heavy. That has a dramatic impact...