friendica (DFRN) - Collegamento all'originale

I have been wondering one thing:

when residential #solarPanel installations produce energy that is used in the same house and not sold to the grid, is it counted in the stats about the renewable energy production of a country / grid-area-whatever? Or does it get missed because the grid never sees it? Or does it depend on the local regulations?

does anybody know?

#solarpanel
in reply to Elena ``of Valhalla''

mastodon - Collegamento all'originale

Chris Alemany🇺🇦🇨🇦🇪🇸

I would think that unless it has been registered with some sort of power utility, then it won’t be counted as renewable energy generated. However, it would be indirectly counted as greater energy efficiency as the overall consumption of grid electricity per capita or per GDP would go down.
in reply to Chris Alemany🇺🇦🇨🇦🇪🇸

friendica (DFRN) - Collegamento all'originale

Elena ``of Valhalla''

@Chris Alemany🇺🇦🇨🇦🇪🇸 yeah, I was thinking of the various “this year solar production has reached X% of total energy produced in country Y” headlines, and those tend to report that the total energy produced/used has also increased.

Or maybe it's just that residential energy use and production doesn't make that much of an impact, compared to industrial.

@Chris Alemany🇺🇦🇨🇦🇪🇸
in reply to scollovati

friendica (DFRN) - Collegamento all'originale

Elena ``of Valhalla''

@scollovati :linux: that's a safety feature (to avoid sending back energy to the grid when it's supposed not to be live, and prevent accidents to the people working on it), and it doesn't necessarily mean that the meter will actually *see* the energy that gets self-consumed.

Devices that allow self-consume even when there is a grid outages do exist and are legal in Italy, but they are an additional expense that very few people add to their systems.

(Besides, you don't really *have* to connect the panels to the grid, you are perfectly allowed to be fully off-grid, but then of course you don't get the advantage of being able to get energy from the grid when there isn't enough sun)

@scollovati
in reply to Elena ``of Valhalla''

mastodon - Collegamento all'originale

Pare 🚲 🌞

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Se l'impianto non è proprio collegato alla rete (rifugio di montagna o simili) immagino sia difficile contarlo, ma certamente va stimato nelle statistiche.
In Italia però molti impianti ricevono incentivi sulla base della produzione, anche se consumata sul posto (o soprattutto, le Comunità Energetiche esistono a livello europeo), quindi va misurata.

Se guardi i dati pubblicati da Terna, contengono una misura sempre aggiornata anche per la voce auto-consumo.

dati.terna.it/generazione#bila…

Generazione Energia | Dati Terna Driving Energy

Accedi ai dati sulla capacità installata e sulla quantità di energia immessa in rete. Puoi consultare anche il bilancio energetico del sistema elettrico italiano.
dati.terna.it
in reply to Elena ``of Valhalla''

mastodon - Collegamento all'originale

Andrew McMillan

there are attempts to estimate it in some countries (looking at you, Australia) but I believe it's rarely, if ever, counted. My own panels certainly don't report how much I self consume to anybody but me.
Someone in this thread mentioned that in Italy they're connected to the meter and you can't power your house from the sun during an outage, but I believe that's a separate safety related issue - if people are working on the lines during an outage they don't want any unexpected electricity zapping them. We have a special system to disconnect from the grid in an outage, but it's rare and expensive here in New Zealand.
in reply to Elena ``of Valhalla''

glitchsoc - Collegamento all'originale

external quantum efficiency

I think "it depends"; there are some cities where solar is "behind the meter" and is not visible to the grid, there are some cities where the solar is "through the meter" and it does get measured. I think mine is the latter, my utility bill says how much I generated iirc.

Maybe Germany's "balkonsolar" is the former?

Then there are edge cases like off the grid houses...

in reply to Elena ``of Valhalla''

mastodon - Collegamento all'originale

cate

it depends. It should be accounted. How? questionnaire, automated reporting, butI think the most common: good old estimates (imported pv, lifetime, efficiency, accounted share, useable share). On your calculator: no. Similar for electric cars (mobility vs residential). Eurostat and IAE describe desired methodology.
in reply to Elena ``of Valhalla''

mastodon - Collegamento all'originale

The Penguin of Evil

It seems very variable. Pakistan for example everyone does because it's almost entirely not grid tie so the non grid attached stuff matters. UK OTOH nobody seems to have a clue how much is non grid tie because it's unregistered and invisible to the government and it's probably too small to matter as a percentage.
in reply to The Penguin of Evil

mastodon - Collegamento all'originale

The Penguin of Evil

there is another complexity too. Increasingly people are building microgrids for groups of new houses with shared big battery storage and grid connecting the whole microgrids as one supply. That avoids the grid operators raking in money moving power next door. In those cases it's even less visible what goes on.

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