TIL that #solarPanels also have bad consequences :D
today just after lunch for the second time since they had been installed our batteries were basically full, the sun was still shining, and we still can't send energy to the grid¹, so we run a dishwasher load, a washing machine (cold water, so it didn't help a lot, but that's what I had to wash at the moment) and we still weren't using what the panels were producing, so I had to face The Pile of Stuff That Needs Ironing.
I had been successfully² postponing that for *weeks*!
¹ from installation to being enabled for that it usually takes a couple of months, between bureaucracy and waiting for a tecnicians
² not that it is in any way near the bottom
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Elena ``of Valhalla''
in reply to Elena ``of Valhalla'' • •Oggi ho scoperto che i #pannelliSolari hanno anche delle conseguenze negative :D
per la seconda volta da quando ce li hanno installati, dopo pranzo le batterie erano quasi piene, il sole stava ancora splendendo e non possiamo ancora rimandare energia in rete¹, quindi abbiamo fatto partire la lavastoviglie, la lavatrice (a freddo, perché quello avevo da lavare, quindi non ha aiutato molto) e ancora non stavamo usando quello che i pannelli stavano producendo, e quindi ho dovuto affrontare La Pila Delle Cose Da Stirare.
Ero riuscita a procrastinare la cosa con successo² per *settimane*!
¹ di solito ci vogliono un paio di mesi
² non che io sia arrivata anche solo vicina alla fine
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rag. Gustavino Bevilacqua e Oblomov reshared this.
rag. Gustavino Bevilacqua
in reply to Elena ``of Valhalla'' • • •Elena ``of Valhalla'' likes this.
Elena ``of Valhalla''
in reply to rag. Gustavino Bevilacqua • •rag. Gustavino Bevilacqua
in reply to Elena ``of Valhalla'' • • •Una reticella…
Oppure potresti offrire ricariche alle auto elettriche in cambio di prodotti dell'orto…
Elena ``of Valhalla''
in reply to rag. Gustavino Bevilacqua • •rag. Gustavino Bevilacqua reshared this.
Fabio
in reply to Elena ``of Valhalla'' • •Elena ``of Valhalla'' likes this.
Alessandro
in reply to Elena ``of Valhalla'' • • •Elena ``of Valhalla''
in reply to Alessandro • •@Alessandro magic :D
i pannelli non producono oltre quanto viene richiesto dai carichi
(suppongo ci sia un po' di calore in più da qualche parte, visto che il sole ha colpito la superficie, ma non a sufficienza da causare problemi)
I am Jack's Found 404
in reply to Elena ``of Valhalla'' • • •Elena ``of Valhalla''
in reply to I am Jack's Found 404 • •@I am Jack's Found 404 it goes to waste
and as soon as the technician will change our meter (which should be soon) it will go back to the grid (and we will get paid a small amount)
Marcos Dione
in reply to Elena ``of Valhalla'' • • •@float13 I wonder where that energy goes. Heat I guess? Or is it not generated in ths first place? Do pannels get hotter in that case?
#solar
Steven Reed
in reply to Marcos Dione • • •@valhalla @float13
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Gid
in reply to Steven Reed • • •Edit: that's why the system needs to be cut off from the grid or shut down in case of power outage in the grid.
@mdione @valhalla @float13
Elena ``of Valhalla''
in reply to Gid • •@Gid @Marcos Dione @I am Jack's Found 404 @Steven Reed there is a bit in the inverter box that decides whether to recharge the batteries, deliver energy to the hourse or send it back to the grid, and it had been setup not to deliver energy to the grid, until the meter is ready for it
otherwise, the meter would have happily registered it as energy passing through it, and billed us for it
it's not the system that shuts everything down when there is a power outage, as there often is a trickle of energy going up into the grid according to the monitoring system, enough to be dangerous for people working on the outage, but not significant for billing reasons.
Marcos Dione
in reply to Gid • • •@Mr_GHARice I think you're answering a different question, that of "what happens if the main grid generators go down (f.i., disconnected from the grid) and the solar panel is still connected". My question was "what happens if there is no load", and similarly, "who actually provides the energy if there is load, solar vs grid; and what happens to what is generated but not used". On the grid side it's regulated by generating more or less energy depending on load.
@srtcd424 @valhalla @float13
Elena ``of Valhalla''
in reply to Marcos Dione • •@Marcos Dione @Steven Reed @Gid @I am Jack's Found 404 the smart bit inside the inverter box decides how much energy should be taken by the panels, batteries or grid, and how much energy should go to the house, batteries, or grid
the panels are ok with only providing less energy than they could produce, with no ill effects, because electovoltaics are *magic*; (I assume that there is a bit more heat going around, but still less than what would have been released by the sun hitting a dark-ish roof, so easily dissipated)
Elena ``of Valhalla''
in reply to Steven Reed • •@Steven Reed @I am Jack's Found 404 @Marcos Dione indeed, in both safety and ability to scale down photovoltaics are much better than wind turbines
(which is why wind turbines are mostly a power plant level thing, while photovoltaic on the home is often a better choice even in places with more wind than sun)
(also, this is definitely a case of whyNotBoth, each in its own suitable environment)
cate
in reply to Marcos Dione • • •@mdione @float13 it is not generated, so it becomes like a dark wall (so still absorbing heat, but no photo-electric-effect in place).
@valhalla luckily we are in winter, else you should iron and solder and weld all days.
Elena ``of Valhalla''
in reply to cate • •@cate @Marcos Dione @I am Jack's Found 404 our soldering iron is something like 20W, basically irrelevant
and I don't have a welder, nor can use it (yet)
I suspect that the clothes iron isn't that much of a load either, at least once it's up to temperature, because it's rated 2.2 kW or something, but it's also on for very short periods of time, I should take some actual measurement
the same applies to the kettle: rated 2.2 kW, but for a tea it only stays on for a couple of minutes, so it's less than 100 Wh
frater mus
in reply to Marcos Dione • • •Elena ``of Valhalla'' likes this.
tk
in reply to Elena ``of Valhalla'' • • •For the advanced users: Charging the EV or Water heating via heatpump
Elena ``of Valhalla''
in reply to tk • •@tk honestly, ironing clothes is less of a chore than vacuuming :D (we usually do it a bit at a time with a rechargeable vacuum)
(and baking, considering a number of food restrictions, would have required too much prep time, ending up happening after the peak of electricity production)
(heat pumps for water heating have been postponed to “when we can save a bit more money for it, and hopefully the prices will have gone down a bit, because right now all of the quotes we're getting are (probably oversized but) extortionate”)
Elena ``of Valhalla''
in reply to Elena ``of Valhalla'' • •@tk (water heating was / is integrated with heating water for the radiators, and changing *that* would have required too much work and expense. the quote for an air-water heat pump were, as I said, extortionate, so we added air-air heat pumps, but they are sized to work *together* with the radiators, not instead of them)
(one day we'll have a fully electric house, but it will need to happen through gradual changes)
(and yesterday, since the sun was shining and there was some warm wind, it was a bit too warm to turn on the heating anyway)
tk
in reply to Elena ``of Valhalla'' • • •The heat pump for radiator heating was around 4k€ without install
Elena ``of Valhalla'' likes this.
tk
in reply to tk • • •Elena ``of Valhalla''
in reply to tk • •@tk here the quote was for about 25k€, plus an unknown expense to change the electrical wiring to get three-phase current, plus having to pay more for electricity (because three-phase) and not being able to afford solar panels for years
or we could start with the solar panels and start saving money on electricity and save it for more electrification later
it wasn't a hard choice :)