Hi,
Thinking of taking up this deal. 6.6kw solar + 2x 6.5kw growatt batteries for around $5k
https://www.ozbargain.com.au/node/488461#comment
(basically still available in SA).
Don't need 13kw of batteries, 6.5kw will do. Do you think I could sell one to offset the install costs? Or will it breach STCs etc?
"they can draw power from the batteries for the grid." Yep, it draws quite quickly too….
It is done when there is a brown out in local area (blackout leaves us isolated to use solar and battery).
We had a Tesla powerwall 2 installed Dec 2018 as part of AGL VPP.
Okay, I'll ask how much just one battery is then? That being said, I've seen a few Tesla powerwalls selling for $4k on the second hand market. See what happens. Either way, this seems like a good deal?
All that for $5k is a friggin amazing deal.
How much do you think is going to pay for a battery with essentially no warranty?
Would need to be installed at your place initially to get the subsidy, then you would need to pay an elec to isolate, remove and likely reprogram inverter to adjust its battery capacity config.
Then someone else buying it needs to pay an elec to do the reverse, and hope they never need a warranty claim.
What's it worth, that is the question?
I literally have no idea, but saw people interstate where very interested in this deal. If I can get some cash off the install, happy days.
"Don't need 13kw of batteries, 6.5kw will do"
6.5 kWh does not go far; we have the 13kWh Tesla (installed Dec 2018)
our battery was 100% charged at around 8pm last night, it is now down to 25% (which is our user set lower limit in case of blackout)
no air conditioners were ran last night either, so that is mainly fridge, freezer, tv's. we have an 'idle' usage of around 500W.
mid winter - a gloomy day means no charging whatsoever
mid summer (sub 30deg) - a sunny or partially cloudy day means no purchase of regular power
.
Thanks for the info. Do you feel or know if battery life has deteriorated since it was installed a year ago?
seems AOK
.
Looking at our smart metre usage, we use 2kw per day. Used 13kw in one day only once in 2 years (when it was 45C for 4 days).
Idle usage of 500w… Wow, seems excessive.
Nothing is excessive in Australia, with maybe the exception of not using enough electricity. I use 4KwH a day for 2 people. I have no idea what people are using all their electricity on.
If
If you are using 2kWh per day, why install solar and storage. Have you worked out the payback time? You are using less than a dollar of electricity per day so $2 with supply would approximate to around $750 per year (you are in SA?)
So, currently use 2kw / day (thanks solar hotwater, turning down the TV backlight (50% less power draw) and evap AC. But have an elect (well PHEV) car I charge at work. Changing job, so will add 13kw every second day soon. But that is at off-peak rates ..so still undecided about going all in for this. Hence I thought if I could sell one battery, the net price becomes much cheaper. A bit of future proofing when feed in tariffs become nothing and solar doesnt help much when you aren't at home most of the day.
2kw per day. That’s what just our 700L fridge uses.
I just checked the smart meter data and the daily average for Feb was 2.8kw used. We have a double door Samsung fridge / freezer. Must be pretty efficient (power meter says 1.2kw per day). We cook at home 6/7 nights using induction/ elect oven. Don't know…the TV backlight blew my mind on how much less energy it uses once you dim it. Only use 1 tv and have no Alexa's, wifi, PCs (except a MacBook) all LED light globes. Bosch dishwasher. Inverter washing machine probably helps, have ceiling fan on all night. Dont know..meter says 2.8kw!
@tunzafun001: How the hell you managed to get only 2.8kwh per day with a double door (is it side by side?) and a dishwasher? Those two device use pretty much 2.5kwh already, doesn't leave much room for lighting and tv, and washer too. My daily is around 10kwh with similar set up, albeit I have a couple of smart things and pc running all days, my base load is probably half of that already.
@lgacb08: I looked at the fridge reading again (it's 12kw / week, not 1.2kw /day, but still low by the sounds of it). Yep, Samsung side by side fridge/ freezer, no fancy water features, just a 5yr old double door. All I can share is we are definitely energy conscious (ie. close the fridge/ freezer doors slowly, not slam them and force the cold air out). Never block the fan vents at the back of the fridge, keep it close to full to minimise air movement). Back door is close by, so gets good air movement underneath.
Tv is a 47" Pana. Was chewing 250 odd watts out of the box, uses 50w with the backlight turned down 1/4 (and I can't see any difference in picture- maybe you would in a brightl location).
I used to run one of those power boards that shut everything off so it isn't on standby. However, the good ole power meter showed that the powerboard was chewing more power on standy, than the sum of all the things plugged into it.
All light globes are LED.
Washing machine, microwave and AC are all inverter technology. No idea how much difference that makes.
Solahart Hotwater is a biggie I recon. That's not connected to power at all at the moment, and still boils over via the pressure release line. Anyone got any good ideas how to safely store the boiling over flow (can be around 100L / day)? Just dumping it into a rainwater tank. Installers have to dump them to a drain, but seems a waste.
I guess grab a plug in power meter and do an audit around your house. Might find something that will suprise you. I'll see what the Dishwasher draws next time (P.S. Always risne then stack, run it every 3rd day).
@tunzafun001: I've bought a $20 plug in meter as suggested to satisfy curiosity.
First week was in our ensuite, chosen so I could keep an eye on it. It was only monitoring clock radio, shaver and electric toothbrush charger. Very low usage 0.06kWh for the week ($1/yr). Wondered how accurate it was, until….
Second week, plugged into our 2001 383 litre freezer. 27kWh for the week. Hmmmm. That extrapolates out to 1400/yr against the energy sticker showing 1024 (1 star). Probably not too surprising given it's age and that would be lab conditions. Also, others in the house like to leave the door open whilst unpacking items from a box/bag.
Peak wattage of 2kW (8A@240V).
Equivalent new freezer payback works out to around ten years, so not in a hurry to replace it.
Now plugged into the matching 420 litre fridge….
@lgacb08: Old thread, but I got to 'fess up. The 2.5kwh must be what we use OVER the solar output per day, averaged over the quarter. Apologies all.
A single 6kw system would probably produce 20kwh of electricity a day. That would fill both batteries if you don't use a significant amount of electricity.
I've had this exact system installed for about 1 month. Here's a snapshot of what to expect: https://imgur.com/MlAGle7 @ 11:47am 12/03/2020
Cheers, but image didn't work. My mates getting his installed next couple of weeks.
Also, is yours on the VPP? I was told this deal isn't part of the VPP.
Virtual power plant ..ie can they draw from it whenever they want?
@iDroid: New image all good. No VPP ..Cheers all-round. Wonder why it's half the price of the next best?
@tunzafun001: No idea, very happy with the quality and performance so far - early days, but the kit performs better than expected for the price.
Used a total of 5.2kwh from the grid in 30days! Feed in 530kwh, used about 300kwh locally..
Pretty good in my book.
@iDroid: Sounds good. Any hidden / extra costs? Also, what panels did you end up getting. The most recent deal is a different brand of panels (still 330w panels though).
@tunzafun001: Yeah I got in early and got the Jinko 330W Cheetah's.
No hidden costs, just as advertised.
The SA Government subsidy is calculated on the battery capacity. Don't install the batteries, no subsidy.
Sounds like the SA Government is doing this so that when there is high demand on the grid, they can draw power from the batteries for the grid.