Glossary - Sonnen sonnenBatterie eco User Manual

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Glossary

Appliances: Devices that consume power. These may include small appliances, such as a blender, or large
ones, such as a water heater.
Backup mode (or offgrid mode): A mode of operation in which the sonnenBatterie eco provides power
stored in its battery modules when the utility grid power is unavailable.
Backup readiness: When the storage system emphasizes backup readiness, it maintains a specified state
of charge, such as 85%, in its battery modules to be ready to provide power in the event of an outage.
Battery modules: The energy storage modules in the sonnenBatterie eco.
Capacity: The amount of energy that can be stored in the sonnenBatterie eco, measured in kilowatt-
hours.
Consumption: The amount of power being used by appliances.
Deep discharge: Bringing the battery module's charge to such a low level that it damages the battery.
For the modules used by the eco, this requires leaving a module at an extremely low level (0%-1%) for
weeks or months.
Discharge: When the storage system provides power to your house or building.
Feed-In: When the storage system provides power to the utility grid.
Grid: The power source provided by utility companies, as opposed to self-generated power.
Kilowatt-hour: A measurement of energy equal to one kilowatt delivered for one hour.
Load-shedding: The method of removing power to appliances either to keep the load within power
requirements or to maximize battery time.
Main disconnect circuit breaker: A circuit breaker that cuts all power to and from the storage system
when opened.
Main service panel: The main panel to which all appliances are connected.
Microgrid: The grid created by your power generation system, as opposed to the utility grid.
Modbus: A serial protocol that enables communications between smart devices.
Photovoltaic: A photovoltaic system of solar-power panels.
Production: The power generated by your solar panels.
Protected loads panel: A panel providing power to the most important appliances in the house or
building, such as a refrigerator, freezer, or heater. This subpanel is isolated from the main service panel
by a switch to prevent electrical feedback.
Self-consumption: The method of using solar power to power appliances rather than using grid power.
State of charge: The percentage of charge available in the storage system's battery modules.
Storage system: The sonnenBatterie eco, which combines an inverter, battery modules, and other
hardware and proprietary algorithms to make solar power an even more cost-effective power source.
Transfer switch: A switch, either manual or automatic, that changes the power source from the utility
grid to self-generated power in the event of a loss of power.