Solar options for home in 2022.

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212 posts

Master Geek

#3317649 6-Dec-2024 21:41

Or buy a used 24kWh Leaf battery at 70% SoH for $1500, add about the same for switchgear and plug into your hybrid inverter for a battery with the same capacity as a PW3 for 20% of the cost.

Meanwhile I have a Leaf with V2X but NZ regs makes both these options very hard.

Otautahi Christchurch

dukezoid

49 posts

Geek

#3317889 7-Dec-2024 19:35

fastbike:
Or buy a used 24kWh Leaf battery at 70% SoH for $1500, add about the same for switchgear and plug into your hybrid inverter for a battery with the same capacity as a PW3 for 20% of the cost.

Grid-tied?! I’ve had no success finding an electrician / inspector team prepared to give repurposed ev a go 🥲. Have you fared better?

Off-grid DIY sure. But house insurance almost certainly void (at least with my policy wording).

dantheperson

174 posts

Master Geek

#3317893 7-Dec-2024 20:43

dukezoid:
fastbike:
Or buy a used 24kWh Leaf battery at 70% SoH for $1500, add about the same for switchgear and plug into your hybrid inverter for a battery with the same capacity as a PW3 for 20% of the cost.

Grid-tied?! I’ve had no success finding an electrician / inspector team prepared to give repurposed ev a go 🥲. Have you fared better?

Off-grid DIY sure. But house insurance almost certainly void (at least with my policy wording).

I'm hoping someone starts producing a connector box with appropriate regularory licensing for not too much. If there was such a device you would think it would be quite popular given the cost of a used leaf or tesla battery. I looked into what was involved in hooking up a leaf battery to a fronius using the Dali software. Way beyond my electrical skills.

LightbulbNeil

57 posts

Master Geek

#3317927 8-Dec-2024 08:34

It seems to me, that if you want to use an EV battery, the best option at this stage is to have a separate system that is off grid. Charge it from the current grid tied solar system as a load on the house. Choose the off grid items or load. Not a cheap option but seems the only work around at the moment.

HarmLessSolutions

969 posts

Ultimate Geek

Subscriber

#3318126 8-Dec-2024 19:34

Plucked from another forum this report is a well thought out and written appraisal of the state of New Zealand's electricity sector and how it needs to be changed to be fit for purpose as technological advances change the generation landscape.

https://geoffbertram.com/wp-content/uploads/2024/11/viggers-chapter-final-v3.pdf

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

fastbike

212 posts

Master Geek

#3319008 11-Dec-2024 06:53

HarmLessSolutions:

Plucked from another forum this report is a well thought out and written appraisal of the state of New Zealand's electricity sector and how it needs to be changed to be fit for purpose as technological advances change the generation landscape.

https://geoffbertram.com/wp-content/uploads/2024/11/viggers-chapter-final-v3.pdf

I got a link for this from The Kaka (Bernard Hickey) last night. Looks like interesting reading. The power companies will be lobbying the government to clamp down on folk like us who have enough nouse (and cash) to break free of their rort. Be warned and be prepared to push back.

Otautahi Christchurch

HarmLessSolutions

969 posts

Ultimate Geek

Subscriber

#3319070 11-Dec-2024 09:24

fastbike:

HarmLessSolutions:

Plucked from another forum this report is a well thought out and written appraisal of the state of New Zealand's electricity sector and how it needs to be changed to be fit for purpose as technological advances change the generation landscape.

https://geoffbertram.com/wp-content/uploads/2024/11/viggers-chapter-final-v3.pdf

I got a link for this from The Kaka (Bernard Hickey) last night. Looks like interesting reading. The power companies will be lobbying the government to clamp down on folk like us who have enough nouse (and cash) to break free of their rort. Be warned and be prepared to push back.

The Kaka was my source for this report. Worth noting that Bernard is opening up access to the site for all rather than just paying subscribers (as I am) for the next couple of weeks. Great knowledgeable media content that is so lacking from mainstream media organisations these days.

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

ringbearer

114 posts

Master Geek

Trusted

#3319075 11-Dec-2024 09:50

dantheperson:

tradedepot now selling full solar/inverter/battery kits. e.g. $10K for 5kW solar with 10kWh battery.

PACKAGING INCLUDES:

12x Solar panels - 440W
1x Hybrid inverter
1x Lithium solar battery
1x Mounting bracket with accessories
10x MC4 connectors
100x PV cable
https://tradedepot.co.nz/lighting-electrical-and-plumbing/solar/

This is really interesting, seems like pretty sharp pricing. I wonder if having hardware priced will help bring some clarity to the quoting process. I'd be interested in DIYing some of the install, then working with an electrician to get it compliant.

dukezoid

49 posts

Geek

#3319320 11-Dec-2024 16:26

ringbearer:

dantheperson:

tradedepot now selling full solar/inverter/battery kits. e.g. $10K for 5kW solar with 10kWh battery.

PACKAGING INCLUDES:

12x Solar panels - 440W
1x Hybrid inverter
1x Lithium solar battery
1x Mounting bracket with accessories
10x MC4 connectors
100x PV cable
https://tradedepot.co.nz/lighting-electrical-and-plumbing/solar/

This is really interesting, seems like pretty sharp pricing. I wonder if having hardware priced will help bring some clarity to the quoting process. I'd be interested in DIYing some of the install, then working with an electrician to get it compliant.

Initially thought was sharp as pricing then did a compare on the 8kW SP - if you shop around TD's asking is bang on. So sharp but not super sharp. Ofc handy to get from all same place.

$1299 https://tradedepot.co.nz/8kw-smart-hybrid-inverter-with-solar-panel-and-battery/

Very much looks like Deye inverter. Docs only detail panels, emailed asking for all specs and 4777.2 certs.

RobDickinson

1524 posts

Uber Geek

#3319348 11-Dec-2024 19:29

So a couple consistent sunny days here, the PW on make money mode sucks in some power when its cheap and certainly seems to be throwing it our a lot when it can and esp when rates are higher

In the morning its running against the water heating first thing but doesnt slow it down much

billgates

4705 posts

Uber Geek

Trusted

#3319354 11-Dec-2024 20:26

2 year anniversary today of Solar PV install. ROI is under 6 years currently but with electricity price rises over next 5 years, I expect ROI will be very close to 5 years.

Do whatever you want to do man.

dantheperson

174 posts

Master Geek

#3319575 12-Dec-2024 15:02

dukezoid:

Very much looks like Deye inverter. Docs only detail panels, emailed asking for all specs and 4777.2 certs.

Yes looks identical. Deye does allot of whitelabel brands, so that would fit.

https://www.alibaba.com/product-detail/deye-sun-12k-sg04lp3-eu-SUN_1601061222028.html

dantheperson

174 posts

Master Geek

#3319867 13-Dec-2024 10:47

RobDickinson:

So a couple consistent sunny days here, the PW on make money mode sucks in some power when its cheap and certainly seems to be throwing it our a lot when it can and esp when rates are higher

Now this is interesting... can you confirm my interpretation of all the colour there?

3amish sucks in some grid power and dumps it in the battery
7am - 11amish exporting all excess solar to the grid
10amish hits max export cap and charges the battery with the remaining excess solar
11am switches from export priority to charge priority, dumping 5kw into the battery and exporting the remainder

are you on octopus peaker, so 23c export 7am to 11am?

RobDickinson

1524 posts

Uber Geek

#3319889 13-Dec-2024 12:01

dantheperson:

Now this is interesting... can you confirm my interpretation of all the colour there?

3amish sucks in some grid power and dumps it in the battery
7am - 11amish exporting all excess solar to the grid
10amish hits max export cap and charges the battery with the remaining excess solar
11am switches from export priority to charge priority, dumping 5kw into the battery and exporting the remainder

are you on octopus peaker, so 23c export 7am to 11am?

Yep thats basically it, not on octopus but ecotricity ecobattery , low rate is 3-5am, peak is 7-11 , 5-10pm

It has to burn through the water heating ~3kw early before it really starts exporting but it looks like it balances that with incoming solar quite well

this view probably helps

timbosan

2159 posts

Uber Geek

#3320075 13-Dec-2024 14:28

Damn, I had a plan (Micromall, 16 panels, hybrid inverter with no batter yet but later on) and now TradeDepot comes up with an alternative!

Question for those that know more than me, which is the better option now? Smaller setup (say 7-10 panels) + battery, or larger setup with no battery? Long term plans are to include batteries but I want to get started ASAP. If it helps I am keen to self install the panels, etc. and have already spoken to Paul a few times about pricing for self vs. full.

I know there are electricity plans such as ecotricity and Octopus that need / prefer a battery.

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