ESS design and installation manual

Hub-1 policies that are deprecated in favor of ESS:

• Policy 1: Connected to mains, feedback: Use ESS and enable solar charger feed-in.

• Policy 2: Keep batteries charged: Use ESS, select the “Keep batteries charged” mode. And enable “Feed-in excess solar charger power”

• Policy 4: Prevent feeding energy to the grid: There are two options here; first - use ESS, but do not enable Solar charger excess feed-in and it will always be connected to the grid. Or, use the Virtual Switch with ignore AC-Input.

• Policy 5: Connected to mains, no feedback: Use ESS, select the “Keep batteries charged” mode.

• Policy 3: Disconnect from the mains when possible: For this either keep Hub-1 Assistant or (which is often a simpler and better solution): use the Virtual Switch with Ignore AC-Input.

• Disconnect at night: disconnecting at night is not possible with the ESS Assistant, but in any case, disconnecting only causes problems with overload, flickering, etc. With the ESS Assistant, it’s possible to power your loads from the battery while staying connected to the grid; which allows for the same, or better, level of self-consumption without nightly disconnects and associated issues.

• Invert priority: This is not possible with ESS. Use the virtual switch instead.

• Connect to AC-input when available: Use ESS Assistant and select one of the two Optimized modes.

• Connect to AC when available, keep batteries charged: Use ESS Assistant and select the “Keep batteries charged” mode.

• Not available in the ESS System yet, but it will be implemented.

• The ESS BatteryLife feature will make sure that the batteries are not unnecessarily cycled around a low SoC.

• See also the Keep batteries charged option in the GX device.

• Load shedding is a feature in Hub-2 that is not often used and therefore not implemented in the ESS Assistant. Instead of sticking to Hub-2, which we neither recommend nor support, consider using other options, for example, misuse the generator start/stop function in CCGX.

• Battery capacity is no longer required by the Assistant. Instead, enable battery monitor and enter the capacity on the General tab in VEConfigure.

• The PV Inverter Assistant is included in the ESS Assistant: it is no longer necessary to add it separately.