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How do I check the behaviour of my EMS on the Location Capacity Usage chart?

This article is about how to read the Location Capacity Usage chart when using Maxem's Energy Management System (EMS).

The location capacity usage chart can be found when you navigate to one of your locations in the Maxem Energy Cloud. Click on 'Locations' in the left hand menu and then click on the tile of the location you want to check. The charts are only visible when you use our EMS services.

This graph provides a real-time and historical overview of the power usage at a specific site. It helps you understand how the charging infrastructure at the location is utilizing the available capacity throughout the day.

The following picture shows an example of a location capacity graph:

Explanation of the chart elements 

  1. Power used (Blue line): 
    1. This line shows the actual power consumption (in kW) of all connected devices and charge points at the location over time. 
  2. Setpoints sent (Light blue bars):
    1. These bars represent the cumulative power setpoints that have been sent by Maxem's Energy Management System to the the charge points. They indicate the allowed power level at any given time.
  3. Max. charge points capacity (Dashed red line, only visible with Static Load Balanging): 
    1. This line shows the set maximum capacity limit for the location's charging infrastructure. This is a fixed value and helps visualize how close the current usage is to the technical or contractual limits. 

 

Location Energy Usage Graph 

Hover your mouse over the graph to see the following legend and energy values:



Supply:

  • Solar energy (Yellow bars)

  • Grid (Dark blue bars)

  • ESS (Green bars)

Consumption

  • Charging points (Light blue bars)

  • Unknown/other (Gray bars)

  • ESS (Green bars)

Note: Grid, Solar, and ESS are only visible when a controller with Dynamic Load Balancing is installed.


Why are these charts important?

This charts helps you monitor:

  • Whether the location is operating within its capacity limits. 
  • How efficiently the power capacity is used.
  • When adjustments to setpoints were made by the EMS to prevent overload.
  • Potential areas where optimization could further improve the energy distribution. 

 

Common use cases 

  • Quickly assess how much power is being used versus what is allowed. 
  • Detect if capacity limits are being approached.
  • Explain load behavior to customers or partners in case of questions or issues.