I started this thread to get an idea of what people were setting their reserve percentage to and why. If a very cloudy day is expected I often adjust the reserve to go fully on the grid at 2300 and re-adjust at 0700 to go back on battery.Ĭharging the Model S is currently scheduled on off-peak rate times (2300-0700) but I usually allow the car to discharge the battery the reserve value to assure that I meet the equivalent 52 full battery discharges per year required by the SGIP. I think it's worth noting that how much I hold over for period between 2300 and about 0900 gets modified depending on expected weather. By this summer I plan on having a third PW2 courtesy of the referral program so I will likely set the reserve no higher than 25% since the added capacity and almost guaranteed sunshine for solar generation should cover any outages.Īs the other members noted I will be counting on new TOU scheduling software to make all this much easier as it is all manual now by manipulating the reserve value to keep the battery at a preferred level. Winter reserve level is currently set at 50% to allow enough reserve to make it through the night and into the morning at about 9 when I get meaningful solar generation (> 1kW).
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