Appendix 2. Glossary
Appliances:
Devices that consume power. These may include small appliances, such as a blender, or large
ones, such as a water heater.
Autonomy:
A measurement of how little you rely on the grid for energy. The more renewable energy you
produce and consume, the higher your autonomy.
Backup mode (or off-grid mode):
A mode of operation in which the sonnen eco Gen 3.1 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 provide power in the event of an outage.
Battery modules:
The energy storage modules in the sonnen eco Gen 3.1.
Capacity:
The amount of energy that can be stored in the sonnen eco Gen 3.1, 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 Gen 3.1, 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.
Micro-grid:
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.
Summary of Contents for eco 10
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