I have a single Powerwall, and an 8.2 KW system.
Up until now, I’ve had the majority of my power outages in the morning, and the result was hardly noticeable; everything in the home continued to run normallly, and the solar panels continued to generate power and run the house; all excess solar went to charge the battery. The occasional burst of home energy, for example running the water heater, simply caused the battery to discharge along with the solar. All good.
The same is true in the evening; as long as loads are less than the battery’s capacity, fail over is easy and painless, at least until the battery fully discharges.
I recently had an outage during the afternoon, when the battery was fully charged, and it was a completely different experience. Because the battery could not accept additional power, it immediately raised the frequency to 65hz, which shutoff the solar arrays. Then the house load exceeded the battery’s capacity, and it shut power off for the house. Eventually I shed the additional load and was able to get the Powerwall back online.
I’m wondering if it is possible to configure the charging schedule such that it only reaches full battery capacity at the very end of the day, which would allow the battery to keep the solar panels generating power, at least until there wasn’t enough solar energy available until the battery is the only option for home power.
In other words, can I change the timing on charging versus sending to the grid so that the majority of the day there is enough battery “buffer” to keep solar running my daytime loads? (Pool pumps, car charging)
Up until now, I’ve had the majority of my power outages in the morning, and the result was hardly noticeable; everything in the home continued to run normallly, and the solar panels continued to generate power and run the house; all excess solar went to charge the battery. The occasional burst of home energy, for example running the water heater, simply caused the battery to discharge along with the solar. All good.
The same is true in the evening; as long as loads are less than the battery’s capacity, fail over is easy and painless, at least until the battery fully discharges.
I recently had an outage during the afternoon, when the battery was fully charged, and it was a completely different experience. Because the battery could not accept additional power, it immediately raised the frequency to 65hz, which shutoff the solar arrays. Then the house load exceeded the battery’s capacity, and it shut power off for the house. Eventually I shed the additional load and was able to get the Powerwall back online.
I’m wondering if it is possible to configure the charging schedule such that it only reaches full battery capacity at the very end of the day, which would allow the battery to keep the solar panels generating power, at least until there wasn’t enough solar energy available until the battery is the only option for home power.
In other words, can I change the timing on charging versus sending to the grid so that the majority of the day there is enough battery “buffer” to keep solar running my daytime loads? (Pool pumps, car charging)