Two Powerwalls installed four days ago with Neurio monitor, Time-base control showed up shortly thereafter and I set it to Cost Savings with 20% reserve. Here in Northern California, Peak is 3p to 12 midnight, off-peak is 12 midnight to 3p.
My quiescent Household load ranges from 0.5 kW (fridge + vampire draw) to 1.4 kW (downstairs lights on); no A/C or other heavy loads are involved.
Seven screenshots below show:
* 12 noon -- Powerwall still being charged (all info accurate)
* 2:15p -- Powerwall @ 100%, but household load now reported to be 2.5 kW despite...
* PGE meter showing -3.67 kW being delivered back to Grid -- conclusion: Tesla App / Neurio thinks my Household load is 2.5 kW when it's really 0.6 kW; this delta of 1.9 kW when added to the + 1.8 kW reported as being sent back to Grid = 3.67 kW as shown by PGE meter
* 3p -- beginning of Peak and now Tesla App / Neurio think my Household load is 5.3 kW (!)
* PGE meter showing -8.22 kW being delivered back to Grid -- conclusion: Tesla App / Neurio are discharging 4.4 kW (8.22 kW actual less 3.8 kW reported) from my Powerwall back to the Grid. This should never happen, right? My Powerwall charge level starts plummeting.
* 4:38p -- I reset the circuit that the Neurio is on and while it's rebooting, draw from Powerwall stops and my Household load is revealed to be 1.4 kW
* 4:39p -- A few moments later when the Nuerio is up again, we see expected behavior: Powerwall sending 1.3 kW to my Household and all 3.8 kW Solar being sent back to Grid
I have begun a discussion with Tesla about this but would appreciate any insight from those more knowledgeable as to what is going on.
To my eye, some combination of Tesla App / Neurio is not only overstating my Household power draw once my Powerwall is charged, but also discharging Powerwall energy (thats spent all morning accumulating so I can run my Household after 3p) at an accelerated rate right back to the Grid. This is not only inefficient, but causes unnecessary cycling of the Powerwall and severely compromises my reserve in case of emergency.
Thanks in advance for any insight,
David
My quiescent Household load ranges from 0.5 kW (fridge + vampire draw) to 1.4 kW (downstairs lights on); no A/C or other heavy loads are involved.
Seven screenshots below show:
* 12 noon -- Powerwall still being charged (all info accurate)
* 2:15p -- Powerwall @ 100%, but household load now reported to be 2.5 kW despite...
* PGE meter showing -3.67 kW being delivered back to Grid -- conclusion: Tesla App / Neurio thinks my Household load is 2.5 kW when it's really 0.6 kW; this delta of 1.9 kW when added to the + 1.8 kW reported as being sent back to Grid = 3.67 kW as shown by PGE meter
* 3p -- beginning of Peak and now Tesla App / Neurio think my Household load is 5.3 kW (!)
* PGE meter showing -8.22 kW being delivered back to Grid -- conclusion: Tesla App / Neurio are discharging 4.4 kW (8.22 kW actual less 3.8 kW reported) from my Powerwall back to the Grid. This should never happen, right? My Powerwall charge level starts plummeting.
* 4:38p -- I reset the circuit that the Neurio is on and while it's rebooting, draw from Powerwall stops and my Household load is revealed to be 1.4 kW
* 4:39p -- A few moments later when the Nuerio is up again, we see expected behavior: Powerwall sending 1.3 kW to my Household and all 3.8 kW Solar being sent back to Grid
I have begun a discussion with Tesla about this but would appreciate any insight from those more knowledgeable as to what is going on.
To my eye, some combination of Tesla App / Neurio is not only overstating my Household power draw once my Powerwall is charged, but also discharging Powerwall energy (thats spent all morning accumulating so I can run my Household after 3p) at an accelerated rate right back to the Grid. This is not only inefficient, but causes unnecessary cycling of the Powerwall and severely compromises my reserve in case of emergency.
Thanks in advance for any insight,
David