Solar options for home in 2022

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Geek
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#3315207 2-Dec-2024 17:42

An interesting article from Australia

AEMO says emergency powers to switch off solar needed in every state amid 'system collapse' fears - ABC News

neb

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#3315211 2-Dec-2024 17:49

fastbike: The photo supplied by SolarZero makes no sense to me - what is going on with the rails fastened to the roof ?

That's what the panels get attached to. So rails get bolted to the roof, then the panels go onto those.

neb

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#3315212 2-Dec-2024 17:53

TAKid: An interesting article from Australia

AEMO says emergency powers to switch off solar needed in every state amid 'system collapse' fears - ABC News

We're making changes to deal with solar as well, e.g. by allowing the mains voltage to vary by 10% instead of 6%, which also happens to align us with Australia.

Jase2985

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#3315217 2-Dec-2024 18:22

@wellygary semantics, $276 million is greater than $13,000 for a rooftop solar system.

Ge0rge

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#3315219 2-Dec-2024 18:26

neb:
TAKid: An interesting article from Australia

AEMO says emergency powers to switch off solar needed in every state amid 'system collapse' fears - ABC News

We're making changes to deal with solar as well, e.g. by allowing the mains voltage to vary by 10% instead of 6%, which also happens to align us with Australia.

Are we making changes? Or is there a discussion paper out to see what people think about some options proposed?

neb

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#3315220 2-Dec-2024 18:31

It's a discussion paper ATM but I can't see why it wouldn't get adopted.

HarmLessSolutions

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#3315222 2-Dec-2024 18:33

neb:

TAKid: An interesting article from Australia

AEMO says emergency powers to switch off solar needed in every state amid 'system collapse' fears - ABC News

We're making changes to deal with solar as well, e.g. by allowing the mains voltage to vary by 10% instead of 6%, which also happens to align us with Australia.

In a few months when the 4777 standard comes into force we can widen our inverter's voltage parameters to +/-10% which should help our own grid voltage issues in the short term but going forward it allows more solar inputs to add to the existing problem. Presently the lines company have just one protective measure to limit solar input; the 5kW/phase cap. Their voltage regulation gear is woefully out of its depth and will struggle further as solar increases.

Australia dropped their nominal grid voltage from 240V to 230V over the past decade or so to provide a buffer against voltage increases caused by a lot of solar installations. Our personal grid voltage is theoretically 230V but seems to average 240V currently (~234-246V) so I struggle to understand what Powerco is up to.

https://www.harmlesssolutions.co.nz/

HarmLessSolutions

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#3315226 2-Dec-2024 18:38

Ge0rge:
neb:

We're making changes to deal with solar as well, e.g. by allowing the mains voltage to vary by 10% instead of 6%, which also happens to align us with Australia.

Are we making changes? Or is there a discussion paper out to see what people think about some options proposed?

From what our installer has said the +/-10% in terms of voltage is part of the incoming package in standards AS/NZS 4777.2:2024 which also includes provision for V2G.

https://www.harmlesssolutions.co.nz/

neb

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#3315228 2-Dec-2024 18:43

HarmLessSolutions: Australia dropped their nominal grid voltage from 240V to 230V over the past decade or so to provide a buffer against voltage increases caused by a lot of solar installations. Our personal grid voltage is theoretically 230V but seems to average 240V currently (~234-246V) so I struggle to understand what Powerco is up to.

That's actually how I found the linked document, while searching for details on why we're 230V in theory but 240V in practice.

HarmLessSolutions

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#3315232 2-Dec-2024 18:51

neb:

HarmLessSolutions: Australia dropped their nominal grid voltage from 240V to 230V over the past decade or so to provide a buffer against voltage increases caused by a lot of solar installations. Our personal grid voltage is theoretically 230V but seems to average 240V currently (~234-246V) so I struggle to understand what Powerco is up to.

That's actually how I found the linked document, while searching for details on why we're 230V in theory but 240V in practice.

That's a good point. What does Powerco consider is the nominal grid voltage? If they're at 240V and then adding whatever +/- they see fit they're quickly going to make it impossible for our inverter to cope as it's set up to accept 230V nominal.

https://www.harmlesssolutions.co.nz/

RobDickinson

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#3315304 2-Dec-2024 20:54

TAKid:

An interesting article from Australia

AEMO says emergency powers to switch off solar needed in every state amid 'system collapse' fears - ABC News

I wish Australia would make up its mind, either there will be too much solar in summer or they need more to run the air conditioning. Or is it both..

Chewbacca

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#3315308 2-Dec-2024 21:10

Anyone else out there with a goodwe inverter lose connection today?

My production and use today went to 0 on the app for a few hours and then normal and then back to 0 again for short periods during the day.
The inverter itself was showing around 4kw more total production than the app by the end of the day (and during the outages the inverter itself was still showing production)

chimera

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#3315379 2-Dec-2024 23:03

Those posting solar usage graphs for November with large PV systems, I'd be curious to know how often your PV generation exceeded your load + your export to grid (I'm assuming) capped at 5kw. Eg: solar 9KWh, load 1kW, export 5kW. 3kW wasted at those points in time.

LightbulbNeil

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Master Geek
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#3315385 3-Dec-2024 00:22

We have a large system, 15kwh peak rated 3 phase, Monday export peak was 14.47kw. The line voltages varied from a low of 236v to a high of 244v for St Andrews Hamilton. We have no export cap, but was clearly under 5kw/phase. We have no wasted generation at all. Either we use it all, or it gets exported for someone else to use.

Shindig

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#3315406 3-Dec-2024 08:11

The packages that Lightforce Solar are offering do look competitive and certainly cheaper than when I looked 12 months ago.

This SigEnergy hardware - 18 months in business. Too new, or backed by years of industry experience and a really good option?

https://www.solarquotes.com.au/blog/sigenergy-review-features/

The little things make the biggest difference.

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