I’m in the process of upgrading my existing solar setup and am considering a Sungrow system with a 25 kW battery, a 15 kW inverter, and solar panels.
I’d love to hear from anyone who has experience with Sungrow systems. Specifically, I have a couple of questions:
Automation for Charging: Is it possible to set up an automation that allows the Sungrow unit to charge directly from the power grid during specific hours, such as from 12 AM to 6 AM?
Charging Source Control: After the grid charging period, can the system be configured to continue charging the battery exclusively from the solar panels? Is there a way to direct the Sungrow unit to specify its charging source (e.g., power grid vs. solar panels)?
Any insights or experiences you can share would be greatly appreciated!
I believe all your wishlist is possible as the Sungrow Inverters have numerous control scenarios BUT most of them are only available to Installer and Sungrow Tech’s. There is a good reason for that which is to ensure you know what you are doing.
Having said that you can simply get setup with your own installer account if you want to.
There are even settings to accept charging from and control a generator if need be.
If your installer is amenable and knows enough (not all installers know a lot about higher level settings) then they may be the best bet. Most often the people in the solar company office may have all the high level knowledge.
Other than that you can’t go wrong with Sungrow Hybrid Inverters and Modular Battery systems
This answer is coming quite late and may no longer be relevant to OP, but maybe it will help somebody else:
Sungrow itself offers the function to force charging of the battery, which can be set to days and times of day. That means regardless of current solar production, the battery will be charged => if the only sources are grid or solar, it will therefore be charged from the grid.
The “factory” setup (to the best of my knowledge) is the inverter charging the battery as soon as you have solar production with exactly the amount you produce (limited by the maximum power your battery can be charged with). My SH20T came with a DTSU-666, so it “knows” whether and how much electricity you are importing or exporting at any given time, which allows for a lot of functionality which can be implemented into HA. I control all that via Modbus with the help of the mkaiser integration for Sungrow.