Energy Hub Inverter and Backup Interface FAQs

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components. Both offer Level 2 EV charging and both can charge from up
to 100% solar energy.
Q: Can the batteries be set to charge at the top of the bell curve?
A: Yes, this is 'charge from clipped energy', and is a mode we support.
Q: With a 200% DC/AC ratio, if the inverter is exporting max to the
grid during clipping can it serve both the battery load and EV
charger? A: Yes, for instance 7.6kW could flow to the grid from PV, and
simultaneously 5kW can flow from PV to the battery.
Q: Is the Energy Hub compatible with backup generators as well?
What kind?
A: Yes, it supports generators up to ~ 22kW; this feature will be made
available in a future firmware upgrade.2
Once the support is made available, we recommend using generators with
an inverter output for a clean sine wave. We’ll come up with a list of
recommended generators soon.
2 Expected availability Winter 2021
Q: Is this compatible with Tesla Powerwall II?
A: Powerwall II can be connected, but it is AC-coupled only, so you lose
the advantages of DC-coupling such as higher system efficiency and
increased energy production. You may also see clipped production with
200% DC oversizing.
Q: Does Energy Hub inverter have any VPP (Virtual Power Plant)
capabilities?
A: Yes, it does. We are participating in multiple VPP programs through our
global Grid Services team. We are working with utilities like National Grid,
SMUD, and more.
Q: Is an auto-transformer required for battery backup? A: No. It’s
integrated into the Backup Interface.