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The design of big battery lends itself to the frequency control market - energy networks run at a certain frequency, and if it goes too high or low you risk shutdown as equipment and generators exit, to protect themselves. This could lead to a System Black, where assets on the grid progressively shut down as bad frequencies trip their circuits.
When our older coal units start tripping in the heat, other generators have to jump in. Sometimes these are spinning reserve - big coal generators that are contracted to connect in a contracted time. But increasingly this could be battery power, as it is better suited to sub-second response time.
This is particularly important when understanding that demand forecasting is less accurate than e.g. wind energy forecasting. Predicting user habits is difficult!
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This is a really impressive achievement. >15% efficient perovskite modules at >10cm2 made by scalable fabrication techniques. On cell level almost 18% efficient.
The future is non silicon solar
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Interesting thing happening: Tesla called me because they want to send a tech out to "service" my Powerwall and "get some diagnostics".
This is fucking weird, because pretty much every single thing they need should be part of the remote monitoring system they already have.
Only thing I can think is that they want to check out the connection between the Reposit smart controller and the rest of the system.
And here they're out of luck, because the Reposit box connects to the inverter and gives instructions, and the inverter (via the BMS - Battery Management System) is what tells the Powerwall what to do. Effectively its not interacting with the Powerwall at all.
This may all be in relation to the proposal in South Australia for 50,000 households with Solar + Tesla Powerwall 2, creating a pretty fucking large VPP fed by Solar.
But I'm spitballing.
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@antipodean if there's one thing I'll say about Tesla, its that they don't give much away, financially or otherwise.
We've got one of the Powerpacks installed at at DC and its pretty clear nobody is 100% down with the commercials involved. I'm probably going to get involved in a meeting with the network and Tesla next week to see WTF is going on.
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Learning lots from this reddit thread
Do ozone holes (like the one above NZ) make solar power in that area more effective? http://reddit.com/r/askscience/comments/8k38qs/do_ozone_holes_like_the_one_above_nz_make_solar/
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@crucial domestic solar users can help alleviate this by setting devices to run in the middle of the day.
Google California Duck Curve.
But yes, it's a looming problem, particularly for grid operators like coal who aren't nimble enough to respond to changes.
There are a few bits of tech coming online in that regard, including cloud detection for localised power drops and surges, and a more widespread coordination of solar data resulting from that.
One advantage of Australia's big grid is it's rarely too much all at one time - and if it is, then it's usually summer where demand is peaking.
In the next few years we'll see more people install solar with storage or retrofit batteries as they can afford it. At that point, demand-response technologies start to really take off for a smart grid.
Google Virtual Power Plant.
Some of the pumped hydro projects also show promise for buying excess to top up their reservoirs. However they are years off breaking ground.
There is a LOT of old coal generation to replace in the next 15 years. There is kind of irony that about 50% of our fossil fuel capacity is built for a few days per year, but renewables capacity has to be well over that to account for Sun don't shine/wind don't blow.
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@stockcar86 said in Solar Power and Storage - a nerd's view:
Learning lots from this reddit thread
Do ozone holes (like the one above NZ) make solar power in that area more effective? http://reddit.com/r/askscience/comments/8k38qs/do_ozone_holes_like_the_one_above_nz_make_solar/
So science. Wow.
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Nice one @infidel. Do you mind sharing the square meter cost of those?
I'm in process of buying a house with corrugated iron roofing, so thinking that within the next few years I want to replace it with something better - these sound like a good option for a largish (300sqm) house in an area with a decent amount of sun (Napier). I don't want to wait around long enough for Elon's new ones
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Just the shinier tiles are solar.
I think about 40% of my tiles are solar, 60% standard.
Yes I think one of the photos there has all standard tiles, solar tiles on the best aspect. Am away in Europe at the moment so have only seen the photos.
Can replace the standard ones with new solar tiles later on if I need more solar energy, the way they set everything up initially allows for this.
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Here is my quote.
Please find our Horizon Roof Price attached with the additional SOLARtile 5KW package installed as requested thanks.
Horizon Roof installed - $15,276.00+GST Plus additional 5KW SOLARtile system installed - $29,600.00+GST = $44,876.00+GST.So 15K + GST for the standard tiles. 29,600 + GST for the solar.
I'm not doing this to save money!
The powerwall adds another 15k maybe.
I am not sure of the square area from the quotes - will find out from builder in a couple of weeks, 4 bedroom 2 storey house, fairly standard size.
I paid a deposit for Elon's tiles but they were not going to be available until late 2019 at earliest from what Tesla told me.
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@infidel said in Solar Power and Storage - a nerd's view:
I paid a deposit for Elon's tiles but they were not going to be available until late 2019 at earliest from what Tesla told me.
That would mean you'd get some of the tiles in 2020 with the rest maybe in 2021...
What's the life of those Monier tiles?
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@stockcar86 I believe MOnier have been putting all thier new roof's (or is it rooves) on with the ability to easily reto-fit thier new tiles for about a year or more.
in the meantime...
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What's the life of those Monier tiles?
All Tier 1 Solar Manufacturers come with a 10 year warranty plus a 25 year performance guarantee, so you know you’re making a real investment with a company who will be there every step of the way.
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@nta said in Solar Power and Storage - a nerd's view:
oles (like the one above NZ) make solar power in th
I sell residential solar in USA, so found this an interesting read. We are doing an increasing amount of installs here in Colorado, helped by 30% federal tax credit and utility rebates making it much more affordable.
Solar Power and Storage - a nerd's view