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Frequently Asked Questions

What is the difference between an EVSE, a location, and a connector?

The charging topology, as relevant to the eMSP, consists of three entities:

  • EVSE - An EVSE controls the power supply to a single EV in a single session. An EVSE may provide multiple connectors, but only one of these connectors can be active at a time.
  • Location - A location is a group of one or more EVSEs that belong together geographically or spatially.
  • Connector - A connector is a specific socket or cable available for the EV.

The difference between evse, connector, and location

What are the definitions of Public, Semi-Public (Restricted), and Private?

Public is assigned when the locations can be accessed 24/7 by everyone.

Semi-Public (Restricted) is assigned to charging stations when chargers are placed on company domains subject to specific access restrictions, such as opening and closing hours or customer-only parking lots. Some examples are the charging points often:

  • located in car parks of large warehouses or convenience stores
  • located in underground car parks
  • located at hotel and catering establishments
  • operated by a car manufacturer, which allows only vehicles of their brand to charge

Private chargers are not accessible to the public, because they are placed on private locations like a private driveway. For example, some chargers are accessible only to the employees of a company or to the residents of a building.

Can we define new values for public access type other than the current 'Public', 'Restricted', and 'Private' in the future?

Eco-Movement is currently in the process of expanding on the existing public access type. This expansion will include subcategories for each existing public access type category so you can have more information about a location's public access type.

What is the difference between charging_spot_id, spot_connector_src_id, and charging_spot_ocpi_evse_id?

charging_spot_id: charging_spot_id is unique in the Data Retrieval Platform. Each EVSE has a unique charging_spot_id, and the charging_spot_id column is always filled in the Data Retrieval Platform.


charging_spot_id is not constant and might change over time. However, within a snapshot, it is a reliable identifier for the EVSE.

spot_connector_src_id: spot_connector_src_id is unique in the CPO's system and is not unique in the Data Retrieval Platform. It is filled either by the CPO or Eco-Movement.

charging_spot_ocpi_evse_id: charging_spot_ocpi_evse_id is unique and compliant with "eMI3standard version V1.0", but it is not always filled in the Data Retrieval Platform.

How can I identify unique locations?

Every unique master_location_external_reference value is one unique location.

How can I identify unique EVSEs?

Every unique charging_spot_id is one unique EVSE. You can use it to count the number of EVSEs.


Do not use spot_connector_src_id or charging_spot_ocpi_evse_id to count the number of EVSEs because spot_connector_src_id may not be unique and charging_spot_ocpi_evse_id may not always be filled in the Data Retrieval Platform.

How can I identify unique connectors?

Every unique spot_connector_id value is one unique connector.

Who is a Charge Point Operator (CPO), owner, suboperator, and main operator?

Charge Point Operator (CPO) - The CPO is responsible for the charging station's management. In addition, the CPO is also responsible for the following:

  • The administrative operation (for example, access, roaming, billing to MSP, etc.)
  • The technical maintenance, which the manufacturer often performs.

The CPO can either own and operate a set of charge stations or operate them for third parties​ (suboperators).

Owner - The owner is the charge location's owner and often the charge point's owner. Depending on the location (public or private), the owner or the CPO purchases the energy.

Suboperator - The suboperator is a third-party brand under which the charging station operates.

Main Operator - The main operator is the primary operator of the charge location. If the charge location is operated by a suboperator, then the suboperator is the main operator. If the charge location is not operated by a suboperator, then the CPO is the main operator.

Why does the equation power = voltage * amperage not hold for some power values in the data from Eco-Movement?

Eco-Movement considers the maximum power line neutral, so we must include the number of phases when calculating voltage and amperage. Moreover, sometimes we receive ambiguous information from our sources, making power calculations difficult. For example, we receive maximum voltages and amperages that cannot be achieved simultaneously in practice. Therefore, we have various algorithms that help us accurately show the most appropriate power level across various exceptional cases. Hence, straightforward equations such as power = voltage * amperage do not apply to such cases.

Why are special characters not displaying correctly in the downloaded report?

Special characters such as é, ç, ü, etc., may render incorrectly in applications, such as Microsoft Excel because Microsoft Excel cannot correctly display UTF-8 compliant CSV files containing non-English characters. To resolve this issue, follow the instructions here.