Sol-Ark Integration Guide

3) You may not want to discharge the battery too aggressively. Sticking to no more than 9kW per eVault or 3.3kW per
eFlex is optimal for maximizing battery life under time-of-use grid sell-back. Likewise, selling back at less than the full
rated value of the inverter is healthy for inverter life. So for example, if you can identify that the battery and inverter will
be fully utilized over the time of use rate period by discharging at 5kW rate instead of the full rated capacity of the inverter,
it will extend battery life.
4) That said, the mantra is "use it or lose it" - it is more economically advantageous for the end user to use the battery when
it is financially advantageous to do so, rather than to keep the battery at 100% always.
Bad Utility Buyback Rates aka "no net-metering" aka "bad net-metering":
Allow the battery to discharge to a 20% state-of-charge over night, so that it can absorb as much solar power as possible
during the day rather than having that energy sold back to the grid. Staggering the step down percentages throughout the
night so that the battery so that the battery hits 20% right in the early morning will mitigate the risk of power outage
between sun up and sun down. Maintain the final 20% time-of-use step with a grid charge to make sure the battery does not
go below 20% (which would trigger a full grid recharge at 15% per prior steps). During the day, it does not matter if you
prioritize the grid or the battery first when recharging with solar power.
Note: Change the programming from Percentage to Voltage in the Battery setup menu. (Use Batt % Charge / Use Batt V
charge)
Here are more aggressive settings for minimizing sell-back to the grid (but allowing grid-sellback when the batteries are
full).