How does ESS work?

ESS can be configured to optimise self-consumption or to keep batteries charged. When there is more PV power than is required to run loads, the excess PV energy is stored in the battery. That stored energy is then used to power the loads at times when there is a shortage of PV power.

What is ESS system?

1. ESS Introduction & features ESS is short for Energy Storage System. It is a combination of standard multipurpose Victron products, setup with an ESS configuration. In the system, there must at least be one inverter/charger and also the Color Control GX.

Can ESS be used as a backup system?

Use ESS in a self-consumption system, a backup system with solar or a mixture of both: for example using the top 30% of the battery capacity for self-consumption, while keeping the other 70% available as a backup during a utility grid failure. at times when there is excess PV power, the PV energy is stored in the battery.

What is ESS mode?

The ESS mode is configured to 'Keep batteries charged'. When using a grid-tie inverter, it is connected to the AC output as well. When grid power is available, the battery will be charged with power from both the grid and the PV. Loads are powered from PV when that power source is available.

How do I set up an ESS system?

There are a few different ways to set an ESS system up. A combination of these are possible as well: See below drawings to get an idea of all possibilities. The first drawing shows the wiring when a MultiPlus-II is used; and the second one shows how it is wired with a MultiPlus or Quattro. Both drawings show all AC- and DC-Coupled combinations.

How does ESS work if a utility grid fails?

ESS can also be configured to keep the batteries fully charged. A utility grid failure is then the only time battery power is used as a backup. Once the grid is restored, the batteries will be recharged either from the grid or from solar panels when available.