VCOM Cloud

Self-consumption chart

Last modified:

Chart

View the chart at System level under Evaluation.
Self-consumption chart for a system with a battery in Day view
Self-consumption chart for a system with a battery in Day view

Basic info

Description

The chart gives an overview of energy values over time if your system consumes self-generated energy directly on-site:

  • Self-consumption: Select Production, Self-consumption, and Feed-in in the legend to display how much of your system’s generated energy is self-consumed by loads on-site or exported into the grid. For the whole selected period, find the share of the generated energy that is self-consumed or fed into the grid in the pie chart.

  • Self-sufficiency: Select Total consumption, Self-consumption, and Grid import in the legend to display how much of your site’s total energy demand is covered by your system’s self-generated energy or by energy drawn from the grid.

If your system also has a battery:

  • Additionally, select Battery charging and Battery discharging in the legend to display how much of your system’s generated energy is stored (battery charging) and how much energy comes from the storage (battery discharging). For the whole selected period, find the share of the generated energy that is charged into the battery in the pie chart.

Prerequisites

  • You have created the necessary terms for this chart. See Self-consumption terms.

  • If you have a non-standard system setup, you have redefined the standard term definitions to your needs.

Further details

Terms

  • Define each of the self-consumption terms to your needs at System level under icon-wrench1.png System settings > icon-stats-growth.png Calculations > Terms > icon-new-tab1.png Term editor.

  • Especially the definition of the Battery charging and Battery discharging term depend on your individual system setup, for example, if your battery is also charging from the grid or if you have further technology to track energy origin and destination.

Chart colors

  • Premium partner only You can not customize the colors of this chart with the chart colors feature.

Note

Find further information on the general functions within charts under Evaluations & charts.

Further actions

Always see the current power flow values on your system’s dashboard with the Power flow portlet.

Troubleshooting

Problem: Feed-in/grid export and Grid import are reversed

Cause

The “reference arrow direction” on your data logger or meter has been incorrectly configured. This causes the power transformer to reverse the values for grid import and export, and results in an incorrect self-consumption chart.

Solution

Change the reference arrow direction.

Prerequisites
  • User group technician or higher

Steps
  1. At system level , go to icon-wrench1.png System settings > icon-stats-growth.png Calculations > Terms.

  2. In the area Self-consumption, select icon-pencil1.png Edit in the header of the area.

  3. Tick the check box Change import/export direction.

  4. Select icon-floppy-disk1.png Save.

The values in the self-consumption chart are corrected now.

Note

Alternatively, correct the configuration on your data logger or meter, or ensure the power transformer is connected properly. blue'log only If using a blue’Log, see blue'Log XM/XC: Meters for correcting these configurations.

Note that the historical data will still be incorrect in this case.

Problem: Battery charging and battery discharging are reversed

Cause

Your battery interprets negative and positive power values differently than the portal does.

Solution

Change the battery power flow directions for your batteries.

Prerequisites
  • User group technician or higher

Steps
  1. At system level , go to icon-wrench1.png System settings > icon-stats-growth.png Calculations > Battery charging direction.

  2. Select an option for how to interpret the power values of all your system’s batteries:

    • Default: Negative power values are interpreted as the battery being charged, and positive values as battery discharging.

    • Reverse: Negative power values are interpreted as the battery being discharged, and positive values as battery charging.

Note

Even if you use user-defined terms for battery charging and discharging, you can change the charging direction in the menu. The basic structure of your term formulas remains the same.

  1. Select icon-floppy-disk1.png Save.

The values in the self-consumption chart are corrected now.