Update glossary with consumer definition

docs/user-guide/glossary.md

@@ -61,13 +61,20 @@ components](#component-category) together. It can be connected to the public
 [grid](#grid), or be completely isolated, in which case it is known as an
 island.
 
+Components can be grouped into [assets](#Assets) and [devices](#Devices).
+
 ### Component Category
 
 The category [components](#component) of a [microgrid](#microgrid) belong to.
 
 [Components](#component) of the same category have the same characteristics
 (for example offer the same set of [metrics](#metric)).
 
+Examples of category types are meters, inverters, batteries and sensors.
+
+
+### Assets
+
 #### Battery
 
 A storage system for electrical energy.
@@ -77,14 +84,10 @@ A storage system for electrical energy.
 A generator that produces combined heat and power ([CHP](#chp)). Usually
 powered via combustion of some form of fuel.
 
-#### Converter
-
-Generally refers to [DC-to-DC converter](#dc-to-dc-converter).
-
-#### DC-to-DC Converter
-
-An electronic circuit or electromechanical device that converts a source of
-[DC](#dc) from one voltage level to another.
+#### Consumer
+This aggregates all remaining electrical energy [consumption](#consumption) in a microgrid that are not covered by other asset types and components. 
+Under normal circumstances this is expected to correspond to the [gross consumption](#Gross Consumption) of the site excluding active parts and battery. 
+In [Passive-sign convention](#Passive Sign Convention) consumer power is usually positive, but negative values can occur in exotic site topologies (e.g. unidentified generators) and or due to sudden short-term effects. 
 
 #### EV Charger
 
@@ -99,6 +102,30 @@ A device that converts water into hydrogen and oxygen.
 A point where the local [microgrid](#microgrid) is connected to the public
 electricity grid.
 
+#### PV Array
+
+A collection of [PV](#pv) panels.
+
+#### Solar Panel
+
+A panel with [PV](#pv) cells that generates [DC](#dc) electricity from
+sunlight.
+
+#### Wind Turbine
+
+A device that converts the wind's kinetic energy into electrical energy.
+
+### Devices
+
+#### Converter
+
+Generally refers to [DC-to-DC converter](#dc-to-dc-converter).
+
+#### DC-to-DC Converter
+
+An electronic circuit or electromechanical device that converts a source of
+[DC](#dc) from one voltage level to another.
+
 #### Inverter
 
 A device or circuitry that converts [DC](#dc) electricity to [AC](#ac)
@@ -109,10 +136,6 @@ electricity.
 A device for measuring electrical [metrics](#metrics) (for example current,
 voltage, etc.).
 
-#### PV Array
-
-A collection of [PV](#pv) panels.
-
 #### Pre-charge module
 
 A device that gradually ramp the [DC](#dc) voltage up to prevent any potential
@@ -136,15 +159,6 @@ They are generally placed in front of another [component](#component), e.g., an
 A device for [measuring](#measurement] ambient [metrics](#metric) (for example
 temperature, humidity, etc.).
 
-#### Solar Panel
-
-A panel with [PV](#pv) cells that generates [DC](#dc) electricity from
-sunlight.
-
-#### Wind Turbine
-
-A device that converts the wind's kinetic energy into electrical energy.
-
 ### Component
 
 A device (of a particular [category](#component-category)) within
@@ -414,4 +428,4 @@ charges or discharges.
 The state of power depends on the state of charge, battery capacity, initial
 characteristics, chemistry, and battery voltage, as well as external factors
 like temperature and humidity, which can also have a significant impact on it.
-[Source](https://epicpower.es/wp-content/uploads/2020/08/AN028_SoC-SoH-SoP-definitions_v3.pdf)
+[Source](https://epicpower.es/wp-content/uploads/2020/08/AN028_SoC-SoH-SoP-definitions_v3.pdf)