Curtailment: GSP — SPENOpenDataPortal

The "Curtailment: GSP" dataset details the total measured curtailment aggregated at a GSP level.

At this time only curtailment events measured and recorded by our Active Network Management (ANM) system are captured.

For additional information on column definitions, please click on the Dataset schema link below.

Disclaimer: It should be noted that this dataset does not align with the Curtailment Limit guidance as required for a Curtailable Connection (as per DCUSA Schedule 2D) as it includes both curtailment under fault conditions and curtailment driven by Transmission network constraints. This dataset is updated on a quarterly basis.

Some values are left blank in the dataset given that from February 2021 a number of customers connected under the Dunbar ANM system moved to an unconstrained connection and therefore no data is published beyond that point.

Download dataset metadata (JSON)

If you wish to provide feedback at a dataset or row level, please click on the “Feedback” tab above.

Data Triage

As part of our commitment to enhancing the transparency, and accessibility of the data we share, we publish the results of our Data Triage process.

Our Data Triage documentation includes our Risk Assessments; detailing any controls we have implemented to prevent exposure of sensitive information. Click here to access the Data Triage documentation for the Curtailment dataset.

To access our full suite of Data Triage documentation, visit the SP Energy Networks Data & Information.

Attachments

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Dataset schema

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GSP

The unique name of the Grid Supply Point (GSP) a substation is within.

No description available for this field.

Name (identifier)	gsp
Type	text
Sample

2025 Aggregated Rated Capacity of ANM Sites - MW

No description available for this field.

Name (identifier)	2025_aggregated_rated_capacity_of_anm_sites_mw
Type	decimal
Sample

Jan 25 (ASEFA) - MWh

No description available for this field.

Name (identifier)	jan_25_asefa_mwh
Type	decimal
Sample

Feb 25 (ASEFA) - MWh

No description available for this field.

Name (identifier)	feb_25_asefa_mwh
Type	decimal
Sample

Mar 25 (ASEFA) - MWh

No description available for this field.

Name (identifier)	mar_25_asefa_mwh
Type	decimal
Sample

Jan 25 (ASC) - MWh

No description available for this field.

Name (identifier)	jan_25_asc_mwh
Type	decimal
Sample

Feb 25 (ASC) - MWh

No description available for this field.

Name (identifier)	feb_25_asc_mwh
Type	decimal
Sample

Mar 25 (ASC) - MWh

No description available for this field.

Name (identifier)	mar_25_asc_mwh
Type	decimal
Sample

JSON Schema

The following JSON object is a standardized description of your dataset's schema. More about JSON schema.

{

"title":"gsp",
"type":"object",
"oneOf":
[
- {
  - "$ref":"#/definitions/gsp"
  }
]
,
"definitions":
{
- "gsp":
  {
  - "properties":
    {
    "records":
    {
    "type":"array",
    "items":
    {
    "$ref":"#/definitions/gsp_records"
    }
    }
    }
  }
  ,
- "gsp_records":
  {
  - "properties":
    {
    "fields":
    {
    "type":"object",
    "properties":
    {
    "gsp":
    {
    "type":"string",
    "title":"GSP",
    "description":"The unique name of the Grid Supply Point (GSP) a substation is within."
    }
    ,
    "2025_aggregated_rated_capacity_of_anm_sites_mw":
    {
    "type":"number",
    "title":"2025 Aggregated Rated Capacity of ANM Sites - MW",
    "description":""
    }
    ,
    "jan_25_asefa_mwh":
    {
    "type":"number",
    "title":"Jan 25 (ASEFA) - MWh",
    "description":""
    }
    ,
    "feb_25_asefa_mwh":
    {
    "type":"number",
    "title":"Feb 25 (ASEFA) - MWh",
    "description":""
    }
    ,
    "mar_25_asefa_mwh":
    {
    "type":"number",
    "title":"Mar 25 (ASEFA) - MWh",
    "description":""
    }
    ,
    "jan_25_asc_mwh":
    {
    "type":"number",
    "title":"Jan 25 (ASC) - MWh",
    "description":""
    }
    ,
    "feb_25_asc_mwh":
    {
    "type":"number",
    "title":"Feb 25 (ASC) - MWh",
    "description":""
    }
    ,
    "mar_25_asc_mwh":
    {
    "type":"number",
    "title":"Mar 25 (ASC) - MWh",
    "description":""
    }
    }
    }
    }
  }
}

}

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