True, that's one of the things. But the other thing is that "consumer energy cost" is somewhat of a red herring in Germany. Large consumers are exempt of certain surcharges, but this hides the fact that a large part of the renewably generated electricity ends up with them. That makes the surcharges per generated kWh seem worse than they are.
...or just put to good use. Merely replacing global world hydrogen consumption for agricultural and chemical purposes with electrolytic hydrogen would necessitate something like 800 GW of nameplate solar capacity dedicated to the task.
They have approximately doubled their end consumer energy cost for grid tied electricity thanks to their "cheap" expansion of green retardable energy.
Between the hours of maybe 9 AM and 5:30 - 6:00 PM, solar electricity will be so plentiful that it will sell for a very few cents per KwH, causing it to be difficult to pay for the infrastruction.
Yes, great, that means that people will have more money to pay for that infrastructure because they'll need less money to pay for the electricity itself.
At least until someone invents the magic battery that can spread the peak sun-gathering times out across the 24 hours the rest of us have to deal with.
As long as the sales of electric vehicles will continue to take off, this is practically a non-issue. They'll need charging and charging them opportunistically will require lots of extra electricity.
Annual average capacity factors are utterly irrelevant unless you're talking about roofs of limited size. If you want to talk about something actually relevant, talk about seasonal variations.
The initial cost is at least 30% over a high-end Lead Acid battery of comparable size (considering usable energy)
Initial cost 30% higher than lead-acid? That's a bargain! Considering the lead-acid battery "longevity", an incredible one, in fact, unless all you want is occasional backup as opposed to a regular source of electricity.
Nickel-Iron batteries have lower energy density and lower specific power compared to lead-acid batteries (or in layman's terms are less efficient).
Perfectly suitable for stationary storage. And you're not going to discharge them at more than, say, 0.1-0.2C anyway. Not if you want to get through the night, for example.
They produce a lot of hydrogen, daily gassing is required to get the expected performance. Hydrogen gas is explosive, therefore good ventilation is imperative.
That's a design feature that has to be taken into account when designing a whole system, but to claim that it is somehow prohibitive to design around is as ludicrous as to claim that large car batteries would never work because they require good cooling. Well, Tesla car batteries *have* good cooling! So why couldn't a NiFe facility have ventilation?
The cell voltage is 1.2V, so you need 40 cells to form a 48V battery bank.
Just like with any other 1.2V cells. And yet NiMH still works, even in vehicles.
Ni-Fe batteries should be checked and topped up weekly. Inspecting and filling 40 cells is time consuming and tedious.
Yeah, that's probably why some kind of automated maintenance would be desirable for a large scale installation. if someone could crack this, he'd have a lot of money coming his way.
Low specific energy is less important in stationary storage and poor charge retention is less important when talking about, say, weather-related weekly cycles and very low priced intermittent electricity sources. The fact that NiFe batteries don't use any rare or problematic materials could easily render them relevant again in the future if mechanisms for automated maintenance of the electrolyte get improved.
Slashdot Mirror
You must never have watched a single sports game in your life.
I've been watching sports for decades. Just not in languages with ridiculous usages of words.
Can you name one person who would personally benefit more than Musk?
Pretty much anyone on the planet, given that poor people will be much more affected by environmental damage our civilization is causing right now.
As far as I'm aware, for example, Musk supports a universal carbon tax, not an everyone-but-me carbon tax.
You need reliable standby power sources for when it isn't windy or sunny outside.
You need them regardless of anything. Many grids are connecting together total generation capacity amounting to twice or thrice their average load.
Almost certainly not, I'd say.
No, that the "has to be dumped" part is stupid.
OLE
FC Microsoft fans! Disgusting!
I've never heard anyone ever to refer to this as "broadcasting". Screening, perhaps.
You can't determine if someone is broadcasting something with a microphone. You can determine it using an RF receiver.
It's a milliard. We already have it.
The capacity factor is the average generation divided by nameplate capacity. How much sun shines has nothing to do with it, really.
True, that's one of the things. But the other thing is that "consumer energy cost" is somewhat of a red herring in Germany. Large consumers are exempt of certain surcharges, but this hides the fact that a large part of the renewably generated electricity ends up with them. That makes the surcharges per generated kWh seem worse than they are.
When I'm at work (the DAYTIME, when solar usually works) I am not generally running my A/C or doing laundry or charging a car.
And despite all of that, the peaks are in the middle of the day in most countries. What does that tell you about the need for industrial electricity?
...overproduce power that needs to be dumped.
...or just put to good use. Merely replacing global world hydrogen consumption for agricultural and chemical purposes with electrolytic hydrogen would necessitate something like 800 GW of nameplate solar capacity dedicated to the task.
They have approximately doubled their end consumer energy cost for grid tied electricity thanks to their "cheap" expansion of green retardable energy.
Correlation does not imply causation.
Between the hours of maybe 9 AM and 5:30 - 6:00 PM, solar electricity will be so plentiful that it will sell for a very few cents per KwH, causing it to be difficult to pay for the infrastruction.
Yes, great, that means that people will have more money to pay for that infrastructure because they'll need less money to pay for the electricity itself.
At least until someone invents the magic battery that can spread the peak sun-gathering times out across the 24 hours the rest of us have to deal with.
As long as the sales of electric vehicles will continue to take off, this is practically a non-issue. They'll need charging and charging them opportunistically will require lots of extra electricity.
Annual average capacity factors are utterly irrelevant unless you're talking about roofs of limited size. If you want to talk about something actually relevant, talk about seasonal variations.
Crashing the economy by cheapening the energy would be a truly spectacular feat. A little bit like when the green revolution "crashed" agriculture.
The initial cost is at least 30% over a high-end Lead Acid battery of comparable size (considering usable energy)
Initial cost 30% higher than lead-acid? That's a bargain! Considering the lead-acid battery "longevity", an incredible one, in fact, unless all you want is occasional backup as opposed to a regular source of electricity.
Nickel-Iron batteries have lower energy density and lower specific power compared to lead-acid batteries (or in layman's terms are less efficient).
Perfectly suitable for stationary storage. And you're not going to discharge them at more than, say, 0.1-0.2C anyway. Not if you want to get through the night, for example.
They produce a lot of hydrogen, daily gassing is required to get the expected performance. Hydrogen gas is explosive, therefore good ventilation is imperative.
That's a design feature that has to be taken into account when designing a whole system, but to claim that it is somehow prohibitive to design around is as ludicrous as to claim that large car batteries would never work because they require good cooling. Well, Tesla car batteries *have* good cooling! So why couldn't a NiFe facility have ventilation?
The cell voltage is 1.2V, so you need 40 cells to form a 48V battery bank.
Just like with any other 1.2V cells. And yet NiMH still works, even in vehicles.
Ni-Fe batteries should be checked and topped up weekly. Inspecting and filling 40 cells is time consuming and tedious.
Yeah, that's probably why some kind of automated maintenance would be desirable for a large scale installation. if someone could crack this, he'd have a lot of money coming his way.
Low specific energy is less important in stationary storage and poor charge retention is less important when talking about, say, weather-related weekly cycles and very low priced intermittent electricity sources. The fact that NiFe batteries don't use any rare or problematic materials could easily render them relevant again in the future if mechanisms for automated maintenance of the electrolyte get improved.
Maybe, but that one is not something you're doing in the real world anyway.
I thought it was dust devils cleaning the panels. I presume the issue here may be the severity of the event combined with the coming winter.
In real world, counting and not finding anything is the same thing as measuring the empty set.
That's why you put a wireless unit into a wall or something.
Welcome, time traveler from the past! How's the 21st century treating you?
Probably to Eliza. The difference is unnoticeable.