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3 x Powerwall 2?..Whats a good 3phase AC coupled battery 15kW/50kWh?
Enphase make 3 phase batteries. Not sure about the power and capacity.Whats a good 3phase AC coupled battery 15kW/50kWh?
If Amber fully pass this on it would just mean your feed-in value between 10am to 3pm would be 1.2c/kWh lower than otherwise towards the end of the month after you pass the 10am-3pm export threshold. Obviously would need some software work on their end, but after that it's just one more factor in the variable pricing mix as far as the consumer is concerned.Am I correct in thinking that Amber supplies software that helps manage this sort of stuff if you are with them?
Am I correct in thinking that Amber supplies software that helps manage this sort of stuff if you are with them?
Ta, might be needing to move from Powershop to Amber soon
Is there a way to turn off grid exports for particular times of the day? Some sort of “smart” inverter or controller?
Only works if the customer is generally a low kWh exporter/importerAmber
Time to buy the second battery?
I imagine you have to keep an eye on your Powerwall cycles to ensure you do not hit the warranty-limit prior to the time based warranty expiring?It’s tricky to run the numbers as I’ve only just started this journey so I don’t know how much power my battery will end up exporting per month or year and at what price, but conceivably it could shrink the payback time below 10 years.
I imagine you have to keep an eye on your Powerwall cycles to ensure you do not hit the warranty-limit prior to the time based warranty expiring?
Interesting. So you've notched up somewhat over 1,200 cycles, which is not bad for NMC chemistry. So maybe the 70% SOH will be reached around 1,500 cycles. Presumably PW3s with LFP will have a longer battery life......expecting to hit the warranty trigger next year
Interesting. So you've notched up somewhat over 1,200 cycles, which is not bad for NMC chemistry.
Agree about the second one, disagree about the first one. We have house running on electricity only and the peak price is 65c/kWh, yes, SA. Mine will pay back in 4-5 years + convenience. Note that it is not only 12.5kWh for night, it removes the external consumption completely during the day because the power variation from the panels does not force me to suck from the grid, because the battery kicks in and then recharges. In total we push through the powerwall about 16kWh in one day, which makes it a little less than 4 years at 65c/kWh with 15k for battery+installation.Well the economics of house batteries are pretty ropey to begin with (>10 year payback) and a second battery will be even worse (>20 years)
Disagree. The other way round. It's not the charge or discharge currents. PW2 power rating is 5kW. Car batteries can be charged at up to 250kW but they are maybe circa only 5 times larger .car batteries are likely to be worked harder in terms of heavier charge/discharge currents
Agree about the second one, disagree about the first one. We have house running on electricity only and the peak price is 65c/kWh, yes, SA. Mine will pay back in 4-5 years + convenience.
Yes, and you probably have peak electricity for about 30c/kWh.I calculated the payback time of my battery by itself, based on the value of the electricity it has discharged at the time it discharged it, less foregone FIT (I’ve kept all my PW2 5-minute data since installation).
Payback time is currently at 12.6 years. Increasing grid prices reduce the payback time, using it in a VPP to get paid to export when wholesale prices are through the roof would reduce it some more, but how much no idea yet.
Yes, and you probably have peak electricity for about 30c/kWh.
Interesting. What is your daily electricity consumption?My previous plan, before jumping to Amber a week ago, had peak electricity at 63c/kWh.
Interesting. What is your daily electricity consumption?
And how much of that goes through the powerwall?In the past 12 months, 33.5 kWh/day.