Submitted by maddy09 on December 10, 2019
I have a powerwall 2 installed since the start of 2019 and it has been working fine until a week ago. Now the peak charge or discharge has been restricted by Tesla to 3KW. They have done this without informing me. I called them assuming it was a bug and was told, they had to do it because of the below. This is an extract from Tesla's information provided.
All Powerwalls installed in Western Australia also need to comply with the phase imbalance
requirements outlined in Table 8 of the Inverter Embedded Generation – Network Integration Guideline,
specifically a maximum phase imbalance of 3kVA for all 415V three phase connections.
To manage compliance with these requirements, Tesla will be updating all Western Australian
Powerwall systems via software upgrades to introduce a 3kVA phase imbalance detection and active
power control for single Powerwall installations on three-phase sites. This will result in the following:
Single Powerwall installations on single-phase sites – no change.
Multi (3) Powerwall installations on three-phase sites – no change.
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Single Powerwall installations on three-phase sites – Powerwalls will have 3kVA phase
imbalance detection and active power control applied via a software update automatically Q4
This change means as consumers we are worse off and need to get more from the grid when we use A/C or heavier appliances. Is there anyone else from WA on this forum, who has had similar issue?