It should be that the user HAS to have purchased the item. Why would you do it any other way?
I would be happy if I could just filter reviews based on a "verified purchaser" tag. They already mark the verified purchaser reviews with that exact text, so make it a sub-option on the review display options...
You can already do that. From "see all customer reviews", select the sort/filter for "Verified Purchase Only" (rather than all reviewers).
What is missing is the ability to sort my searches by "average customer review", but only consider the reviews from verified purchases.
I hadn't looked at prices lately. Seems that they are going for about $1/watt now for name brand panels with frames.
Still, as I showed in my arithmetic, the price of the raw panels is only about 10% of the cost. So, even if the cost of panels fell to zero, it wouldn't make a drastic difference in overall system cost. The necessary racks, wiring, concrete footings, labor, and maintenance are the significant factors.
The link I posted says "and comes with an integrated inverter". This is what they call "AC Coupled", rather than "DC Coupled". In other words, this is designed for a system that adds batteries to a grid-based system. AC current is generated either at the panels (via microinverters) or using a string inverter that connects the panels to directly to the grid. The "battery" is an add-on that consists of cells, plus a charger and an inverter. When viewed as a black box, the "battery" is AC.
In traditional DC Coupled systems, DC is sent from the solar panels to a (DC) battery bank. Then on the other side, an inverter connects the battery bank to the AC circuits or grid.
So, assuming 1500, that makes the amortized raw cost of storage = $396/1500 = 26 cents per KWH.
The going rate for uninstalled solar panels is about $2/peak watt. If we figure 80% efficiency, 6 peak equiv hours/day in sunny Samoa, 25 year lifespan, then that watt of solar cells nets just under 44KWH. So $2/44 = adds another 4.5 cents per KWH raw cost for the panels (I'm not accounting for the planned 20% degradation over those 25 years)
So, that's about 30.5 cents/KWH for the raw equipment, not including wiring or racking. It also does not include the electronics needed to get DC panel power to the AC powerwall. (or vice-versa, the cost of an inverter if it is DC all the way) Also not including installation or maintenance costs, wiping off bird poop, or the cost of keeping the backup generators in good working order. It also does not include the cost of mishaps (hurricane, sand damage, broken wires, etc). I lost two panels in a recent hail storm, but those were old panels. The newer generation of panels are built to handle baseball-sized hail.
Installed cost per watt for solar adds about 50%. So, this brings it up to about 45 cents per KWH (not including maintenance or back-up capability).
So, this might be cost-effective, but only if they are paying a very high price for diesel generated power.
I'd get a laugh if Trump's IT people did it on purpose, trolling for a sucker that thinks he's an easy target. What better way to get some fool to download and open a doc, and unleash a trojan horse.
Getting to see or talk to a senator is dang near impossible. (Unless of course, you've donated large sums of money to the campaign or money-laundering foundation.)
I know this first-hand from when I was starting a company and trying to get support for a particular program. It took us several weeks of trying, and the best we could do was fly to D.C. to meet with a mid-level staffer for 20 minutes.
I'm sure that senators are busy people. Listening to their constituents ranks right up with answering robo calls.
@AC Thanks for this info. I didn't know you can easily review wiki history. I confirmed it by plugging the wiki info into https://voterlookup.elections.... Looks like "Honestmedia" has been busy. @niaxilin If there is a way to edit my post, I'll gladly remove that paragraph. I was only reporting on my observations, which at least have been confirmed.
Keep in mind that Trump is not exactly the darling of the Republican party. They did everything imaginable to try and keep him from winning the primaries. I think he is only polling at 70% within the party, and many of the party establishment say that they are not endorsing him. Even Bush Sr has come out and said he is voting for Hillary.
To me, this election is not D vs R, but more of like Establishment vs Outsider. Trump could have run as a candidate for either party, and there would be the same drumbeat as to how bad/evil/stupid he is.
Sorry to get off-topic. But yesterday I did a quick Yahoo search "What is Lester Holt's political affiliation". I use Yahoo for any politics-related searches. Trump is being bashed for saying Holt (who will moderate the debate) is a democrat. The Yahoo page still had cached Wikipedia text that says "According to voter registration records, he is a Democrat". So, I saved a screen snapshot. But when you follow the link to the Wiki page, that text is now gone. At the bottom of the page, it says Holt is a Republican. But they only cite two articles, created yesterday, that bash Trump's statement, and use that as reference rather than voter registration records. Over the last day, they altered reality to fit the story that Trump is stupid/wrong. And if anyone tries a quick "fact check", they will hit up Wikipedia, which now contains bogus information and a circular reference. No doubt that by now, other places like answers.com have also been "updated".
From TFSummary, you cannot turn off tracking for Google Play or Google Maps. Google always knows where you are, and offers that information to installed apps.
"Don't be evil" is so last-decade. According to Larry Page, the "Don't be evil" culture prohibited conflicts of interest, and required objectivity and an absence of bias. This does not apply to Alphabet. https://sputniknews.com/us/201...
The difference is that with AC, there is no way to correlate posts and put a person's statement in context. It is impossible to know if this is someone that is always rude, calling people names just because they disagree without any counter-argument - or if this a person who actually adds some thoughtful insight to a topic. There is also no way to know if this is a shill, or if this person has a particular axe to grind. There is also no way to know if someone makes a statement and then follows up with a bunch of others agreeing with their own post.
That said, I do agree with the premise of your question. You don't know who I am. But at least you can look at my other posts and get an idea whether I am trying to make a serious point or just being a jerk or shill.
I am a moderator on a different forum - one that requires full real names. It is amazing how thoughtful and polite people are when they have to personally stand behind the statements they make.
My system has 4 Surrette 6CS-25PS. About 28-30 KWH total storage, stored at 24v.
Those batteries cost about $1100 each, depending where you buy them. 6v, 1158 AH (20 hour rate)
So, without splitting hairs on load rates and voltage, $1100/(6x1.156) = $159/KWH
But when amortized against the rated 3300 cycles to 50%: $159 / 3300 /.5 = $0.096 per KWH to store your energy. Again, I've done a lot of research, and that's the best I could come up with.
Amortized cost is the number you need to look at when pricing a system.
Your cells are the cheaper ones. Rolls specs say 3300 cycles for Series-5000 cells.
"5000 series is no-compromise solution for extended use. Dual container construction, 10 year limited warranty. Rated for 5000 cycles at 20% depth of discharge. 3300 cycles at 50%. Capacities are listed at 100 Hr. rate." http://www.cosolar.com/catalog...
They are designed for a 15 year lifespan. Mine are still nearly good as new after 10 years.
Sorry, I don't have time this morning to glean exact numbers. But there is a misconception that energy storage is free. I just went through these calculations for my off-grid dream home. (My cabin has been off-grid for 20+ years, so I am intimately familiar with wind+solar+storage.)
In reality, batteries don't last forever. The best of the best Rolls/Surette sealed lead acid batteries are good for 3,300 discharges to 50%. So, when you calculate the cost of those batteries against their total number of KWH that they will EVER store, it works out to approximately 10 cents per KWH. I've looked at every option available, and there are no other options close to flood lead acid storage amortized price.
According to https://en.wikipedia.org/wiki/... the Tesla powerwall has/had projected cycle life of 1000–1500 cycles. On a cost per KWH of new battery, they are about 3x the cost of flooded lead acid. So, for 3x the price, you get about half the energy storage over their lifespan. Again, apologies for not presenting the arithmetic. But the stored energy will cost somewhere between 30-50 cents per KWH. So, it is already not competitive with on-demand generation - even if the cost of generation is zero.
Basically some hacker found that they could hook a device up the phones innards and just try brute forcing the 4-digit PIN and that if they cut all power to the device on a failed attempt quickly enough that the system wouldn't register the failed attempt and wipe the device.
For those of us who run off-grid, those pesky wall warts drive our inverters nuts. When nothing needs energy, the inverter goes into sleep mode. I have mine pulsing the wires every 2 seconds, looking for reason to power up. If it senses 15 watts or more of load, it powers up. Problem is that the wall warts tend to use some energy when they are initially plugged in (probably to charge capacitors). So, the inverter powers up, only to see that there is nothing to do, then it powers down. Repeat every 2 seconds. I ended up having to run a 12v circuit to replace the wall warts.
The lesson to be learned is that it works well for the politicians and religious leaders. It also works well for the scientists who support those leaders.
It is only bad for everyone else -- i.e., those don't matter. And very bad for the scientists who don't go along with the status quo.
"...if there's one thing education is about, it's ensuring ideas are never shared with others."
Seems like it. The whole point of education is to learn from what others have already figured out, and move forward from there. But if all ideas are owned and guarded, then there is nothing to learn from.
What will be in the CS textbooks: Algorithms, Data Structures, Numerical Recipes, Networks, Operating Systems, Architecture,...? They can all be replaced with a list of patent numbers owned by huge corporations and trolls.
Even if you happen to come up with an idea on your own, it still might belong to someone else and be off-limits. So much for progress.
It might just be someone spoofing the email address, rather than having the account hacked. You can check the exploded packet headers and look at mail relay to find out if this is what happened. It is annoying, but not nearly as bad as being hacked.
Slashdot Mirror
It should be that the user HAS to have purchased the item. Why would you do it any other way?
I would be happy if I could just filter reviews based on a "verified purchaser" tag. They already mark the verified purchaser reviews with that exact text, so make it a sub-option on the review display options...
You can already do that. From "see all customer reviews", select the sort/filter for "Verified Purchase Only" (rather than all reviewers).
What is missing is the ability to sort my searches by "average customer review", but only consider the reviews from verified purchases.
I hadn't looked at prices lately. Seems that they are going for about $1/watt now for name brand panels with frames.
Still, as I showed in my arithmetic, the price of the raw panels is only about 10% of the cost. So, even if the cost of panels fell to zero, it wouldn't make a drastic difference in overall system cost. The necessary racks, wiring, concrete footings, labor, and maintenance are the significant factors.
The link I posted says "and comes with an integrated inverter". This is what they call "AC Coupled", rather than "DC Coupled". In other words, this is designed for a system that adds batteries to a grid-based system. AC current is generated either at the panels (via microinverters) or using a string inverter that connects the panels to directly to the grid. The "battery" is an add-on that consists of cells, plus a charger and an inverter. When viewed as a black box, the "battery" is AC.
In traditional DC Coupled systems, DC is sent from the solar panels to a (DC) battery bank. Then on the other side, an inverter connects the battery bank to the AC circuits or grid.
Grabbing the back of napkin...
In October, wholesale solar started selling the brand new 14KWH powerwall2 for $5,550. http://www.wholesalesolar.com/... $5550/14KWH = $396/KWH
According to https://en.wikipedia.org/wiki/... The Powerwall has a lifespan of 1000-1500 cycles.
So, assuming 1500, that makes the amortized raw cost of storage = $396/1500 = 26 cents per KWH.
The going rate for uninstalled solar panels is about $2/peak watt. If we figure 80% efficiency, 6 peak equiv hours/day in sunny Samoa, 25 year lifespan, then that watt of solar cells nets just under 44KWH. So $2/44 = adds another 4.5 cents per KWH raw cost for the panels (I'm not accounting for the planned 20% degradation over those 25 years)
So, that's about 30.5 cents/KWH for the raw equipment, not including wiring or racking. It also does not include the electronics needed to get DC panel power to the AC powerwall. (or vice-versa, the cost of an inverter if it is DC all the way) Also not including installation or maintenance costs, wiping off bird poop, or the cost of keeping the backup generators in good working order. It also does not include the cost of mishaps (hurricane, sand damage, broken wires, etc). I lost two panels in a recent hail storm, but those were old panels. The newer generation of panels are built to handle baseball-sized hail.
Installed cost per watt for solar adds about 50%. So, this brings it up to about 45 cents per KWH (not including maintenance or back-up capability).
So, this might be cost-effective, but only if they are paying a very high price for diesel generated power.
I'd get a laugh if Trump's IT people did it on purpose, trolling for a sucker that thinks he's an easy target. What better way to get some fool to download and open a doc, and unleash a trojan horse.
Getting to see or talk to a senator is dang near impossible. (Unless of course, you've donated large sums of money to the campaign or money-laundering foundation.)
I know this first-hand from when I was starting a company and trying to get support for a particular program. It took us several weeks of trying, and the best we could do was fly to D.C. to meet with a mid-level staffer for 20 minutes.
I'm sure that senators are busy people. Listening to their constituents ranks right up with answering robo calls.
We were assured that the "NSA is not rifling through ordinary people's emails". https://www.theguardian.com/wo...
@AC Thanks for this info. I didn't know you can easily review wiki history. I confirmed it by plugging the wiki info into https://voterlookup.elections.... Looks like "Honestmedia" has been busy.
@niaxilin If there is a way to edit my post, I'll gladly remove that paragraph. I was only reporting on my observations, which at least have been confirmed.
Keep in mind that Trump is not exactly the darling of the Republican party. They did everything imaginable to try and keep him from winning the primaries. I think he is only polling at 70% within the party, and many of the party establishment say that they are not endorsing him. Even Bush Sr has come out and said he is voting for Hillary.
To me, this election is not D vs R, but more of like Establishment vs Outsider. Trump could have run as a candidate for either party, and there would be the same drumbeat as to how bad/evil/stupid he is.
Sorry to get off-topic. But yesterday I did a quick Yahoo search "What is Lester Holt's political affiliation". I use Yahoo for any politics-related searches. Trump is being bashed for saying Holt (who will moderate the debate) is a democrat. The Yahoo page still had cached Wikipedia text that says "According to voter registration records, he is a Democrat". So, I saved a screen snapshot. But when you follow the link to the Wiki page, that text is now gone. At the bottom of the page, it says Holt is a Republican. But they only cite two articles, created yesterday, that bash Trump's statement, and use that as reference rather than voter registration records. Over the last day, they altered reality to fit the story that Trump is stupid/wrong. And if anyone tries a quick "fact check", they will hit up Wikipedia, which now contains bogus information and a circular reference. No doubt that by now, other places like answers.com have also been "updated".
From TFSummary, you cannot turn off tracking for Google Play or Google Maps. Google always knows where you are, and offers that information to installed apps.
"Don't be evil" is so last-decade. According to Larry Page, the "Don't be evil" culture prohibited conflicts of interest, and required objectivity and an absence of bias. This does not apply to Alphabet. https://sputniknews.com/us/201...
And a seat that gives a "mild shock" to the driver.
+1 These kind of ideas work best on an overhead projector.
The difference is that with AC, there is no way to correlate posts and put a person's statement in context. It is impossible to know if this is someone that is always rude, calling people names just because they disagree without any counter-argument - or if this a person who actually adds some thoughtful insight to a topic. There is also no way to know if this is a shill, or if this person has a particular axe to grind. There is also no way to know if someone makes a statement and then follows up with a bunch of others agreeing with their own post.
That said, I do agree with the premise of your question. You don't know who I am. But at least you can look at my other posts and get an idea whether I am trying to make a serious point or just being a jerk or shill.
I am a moderator on a different forum - one that requires full real names. It is amazing how thoughtful and polite people are when they have to personally stand behind the statements they make.
"If you care whether your texts are encrypted, you're either paranoid or cheating on your wife. "
Following that logic: If you post as AC, then you are either paranoid or afraid of what you wrote.
No, 10 cents per *amortized* KWH is correct.
My system has 4 Surrette 6CS-25PS. About 28-30 KWH total storage, stored at 24v.
Those batteries cost about $1100 each, depending where you buy them. 6v, 1158 AH (20 hour rate)
So, without splitting hairs on load rates and voltage, $1100/(6x1.156) = $159/KWH
But when amortized against the rated 3300 cycles to 50%: $159 / 3300 / .5 = $0.096 per KWH to store your energy. Again, I've done a lot of research, and that's the best I could come up with.
Amortized cost is the number you need to look at when pricing a system.
Your cells are the cheaper ones. Rolls specs say 3300 cycles for Series-5000 cells.
"5000 series is no-compromise solution for extended use. Dual container construction, 10 year limited warranty. Rated for 5000 cycles at 20% depth of discharge. 3300 cycles at 50%. Capacities are listed at 100 Hr. rate." http://www.cosolar.com/catalog...
They are designed for a 15 year lifespan. Mine are still nearly good as new after 10 years.
Sorry, I don't have time this morning to glean exact numbers. But there is a misconception that energy storage is free. I just went through these calculations for my off-grid dream home. (My cabin has been off-grid for 20+ years, so I am intimately familiar with wind+solar+storage.)
In reality, batteries don't last forever. The best of the best Rolls/Surette sealed lead acid batteries are good for 3,300 discharges to 50%. So, when you calculate the cost of those batteries against their total number of KWH that they will EVER store, it works out to approximately 10 cents per KWH. I've looked at every option available, and there are no other options close to flood lead acid storage amortized price.
According to https://en.wikipedia.org/wiki/... the Tesla powerwall has/had projected cycle life of 1000–1500 cycles. On a cost per KWH of new battery, they are about 3x the cost of flooded lead acid. So, for 3x the price, you get about half the energy storage over their lifespan. Again, apologies for not presenting the arithmetic. But the stored energy will cost somewhere between 30-50 cents per KWH. So, it is already not competitive with on-demand generation - even if the cost of generation is zero.
I'd rather have an Ignore option that works for ACs. Maybe via IP address.
Or better yet, eliminate AC completely and let me ignore by user id.
Basically some hacker found that they could hook a device up the phones innards and just try brute forcing the 4-digit PIN and that if they cut all power to the device on a failed attempt quickly enough that the system wouldn't register the failed attempt and wipe the device.
But that would void the warranty.
"If you want to buy something put a shoe on your head!"
Hold it... Hold it... Now, bark like a dog!
This could be fun!
The story was about Iraq - not Iran.
For those of us who run off-grid, those pesky wall warts drive our inverters nuts. When nothing needs energy, the inverter goes into sleep mode. I have mine pulsing the wires every 2 seconds, looking for reason to power up. If it senses 15 watts or more of load, it powers up. Problem is that the wall warts tend to use some energy when they are initially plugged in (probably to charge capacitors). So, the inverter powers up, only to see that there is nothing to do, then it powers down. Repeat every 2 seconds. I ended up having to run a 12v circuit to replace the wall warts.
The lesson to be learned is that it works well for the politicians and religious leaders. It also works well for the scientists who support those leaders.
It is only bad for everyone else -- i.e., those don't matter. And very bad for the scientists who don't go along with the status quo.
"...if there's one thing education is about, it's ensuring ideas are never shared with others."
Seems like it. The whole point of education is to learn from what others have already figured out, and move forward from there. But if all ideas are owned and guarded, then there is nothing to learn from.
What will be in the CS textbooks: Algorithms, Data Structures, Numerical Recipes, Networks, Operating Systems, Architecture, ...? They can all be replaced with a list of patent numbers owned by huge corporations and trolls.
Even if you happen to come up with an idea on your own, it still might belong to someone else and be off-limits. So much for progress.
It might just be someone spoofing the email address, rather than having the account hacked. You can check the exploded packet headers and look at mail relay to find out if this is what happened. It is annoying, but not nearly as bad as being hacked.