Transmission Generation Heat Map

Information

The "Transmission Generation Heat Map" data table provides an indication of the potential opportunities (or constraints) to connect to SP Energy Networks' transmission network by detailing all connected and contracted projects. This allows potential customers to have an interactive representation of the network and view the type of projects connected to specific substations within the SP Transmission area.

The table gives the following information:

  1. Location of project
  2. Connection site of project
  3. MW connected
  4. MW increase/decrease
  5. Cumulative total capacity
  6. Project status and date effective from

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

Disclaimer

Whilst all reasonable care has been taken in the preparation of this data, SP Energy Networks does not accept any responsibility or liability for the accuracy or completeness of this data, and is not liable for any loss that may be attributed to the use of this data. For the avoidance of doubt, this data should not be used for safety critical purposes without the use of appropriate safety checks and services  e.g. LineSearchBeforeUDig etc. Please raise any potential issues with the data which you have received via the feedback form available at the Feedback tab above (must be logged in to see this).

This heatmap will be updated on a monthly basis using the published data from the ESO's TEC register, the latest ECR and the contracted demand data to ensure we have an accurate representation of projects the ESO has considered as connected and/or contracted. It is important to note, our refresh of this data won't always be aligned to the latest available version of the ESO TEC register. Therefore, there may be small discrepancies between the two datasets. For the most up-to-date version of this data, please visit the ESO TEC register. 

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 Transmission Generation Heat Map dataset. 

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

Download dataset metadata (JSON)

Dataset Identifier
transmission-generation-heat-map0
Downloads
579
Themes
Heat Maps, Network Usage
Keywords
Generation, Transmission Connections, Connected, Contracted
Language
English
Modified
27 June 2025 07:20
Publisher
SP Energy Networks SC389555
Update frequency
Monthly
Coverage
Central & Southern Scotland
Creator
SP Energy Networks SC389555
Subject
Generation, Transmission Connections, Connected, Contracted
Contributor
ESO's Transmission Entry Capacity (TEC Register) https://data.nationalgrideso.com/connection-registers/transmission-entry-capacity-tec-register. The X and Y coordinates are taken from the projects' applications which we receive from the ESO.
Type
Dataset
Format
CSV,XLSX,JSON
Source
ESO's Transmission Entry Capacity (TEC Register) https://data.nationalgrideso.com/connection-registers/transmission-entry-capacity-tec-register.
Relation

Explore Heat Maps Datasets

Transmission Generation Heat Maps Terms - SP Energy Networks

Rights

Creative Commons Attribution 4.0 International

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Last processing
21 July 2025 12:52 (metadata)
27 June 2025 07:20 (data)

Attachments

Click to expand Click to collapse

Dataset schema

Click to expand Click to collapse
ProjectID
               
No description available for this field.
           
               
                   
                                                  Name (identifier)                                                                         
projectid
                       		                   
                   
                                                  Type                                                                         
text
                       		                   
                                      
                                                  Sample                                                                         
                       		                   
               
       
   
       
ProjectName
       
           
               
               
No description available for this field.
           
               
                   
                                                  Name (identifier)                                                                         
projectname
                       		                   
                   
                                                  Type                                                                         
text
                       		                   
                                      
                                                  Sample                                                                         
                       		                   
               
       
   
       
ConnectionSite
       
           
               
               
No description available for this field.
           
               
                   
                                                  Name (identifier)                                                                         
connectionsite
                       		                   
                   
                                                  Type                                                                         
text
                       		                   
                                      
                                                  Sample                                                                         
                       		                   
               
       
   
       
MWConnected
       
           
               
               
No description available for this field.
           
               
                   
                                                  Name (identifier)                                                                         
mwconnected
                       		                   
                   
                                                  Type                                                                         
decimal
                       		                   
                                      
                                                  Sample                                                                         
                       		                   
               
       
   
       
MW_IncreaseDecrease
       
           
               
               
No description available for this field.
           
               
                   
                                                  Name (identifier)                                                                         
mw_increasedecrease
                       		                   
                   
                                                  Type                                                                         
decimal
                       		                   
                                      
                                                  Sample                                                                         
                       		                   
               
       
   
       
CumulativeTotalCapacity_MW
       
           
               
               
No description available for this field.
           
               
                   
                                                  Name (identifier)                                                                         
cumulativetotalcapacity_mw
                       		                   
                   
                                                  Type                                                                         
decimal
                       		                   
                                      
                                                  Sample                                                                         
                       		                   
               
       
   
       
MWEffectiveFrom
       
           
               
               
No description available for this field.
           
               
                   
                                                  Name (identifier)                                                                         
mweffectivefrom
                       		                   
                   
                                                  Type                                                                         
date
                       		                   
                                      
                                                  Sample                                                                         
                       		                   
               
       
   
       
ProjectStatus
       
           
               
               
No description available for this field.
           
               
                   
                                                  Name (identifier)                                                                         
projectstatus
                       		                   
                   
                                                  Type                                                                         
text
                       		                   
                                      
                                                  Sample                                                                         
                       		                   
               
       
   
       
PlantType
       
           
               
               
No description available for this field.
           
               
                   
                                                  Name (identifier)                                                                         
planttype
                       		                   
                   
                                                  Type                                                                         
text
                       		                   
                                      
                                                  Sample                                                                         
                       		                   
               
       
   
       
Coordinates
       
           
               
Location of the project using British National Grid coordinates.
               
No description available for this field.
           
               
                   
                                                  Name (identifier)                                                                         
coordinates
                       		                   
                   
                                                  Type                                                                         
text
                       		                   
                                      
                                                  Sample                                                                         
                       		                   
               
       
   
       
X
       
           
               
               
No description available for this field.
           
               
                   
                                                  Name (identifier)                                                                         
x
                       		                   
                   
                                                  Type                                                                         
integer
                       		                   
                                      
                                                  Sample                                                                         
                       		                   
               
       
   
       
Y
       
           
               
               
No description available for this field.
           
               
                   
                                                  Name (identifier)                                                                         
y
                       		                   
                   
                                                  Type                                                                         
integer
                       		                   
                                      
                                                  Sample                                                                         
                       		                   
               
       
   

                                
JSON Schema

                                

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

                                
   
{
  • "title":"transmission-generation-heat-map0",
  • "type":"object",
  • "oneOf":
    [
    • {
      • "$ref":"#/definitions/transmission-generation-heat-map0"
      }
    ]
    ,
  • "definitions":
    {
    • "transmission-generation-heat-map0":
      {
      • "properties":
        {
        • "records":
          {
          • "type":"array",
          • "items":
            {
            • "$ref":"#/definitions/transmission-generation-heat-map0_records"
            }
          }
        }
      }
      ,
    • "transmission-generation-heat-map0_records":
      {
      • "properties":
        {
        • "fields":
          {
          • "type":"object",
          • "properties":
            {
            • "projectid":
              {
              • "type":"string",
              • "title":"ProjectID",
              • "description":""
              }
              ,
            • "projectname":
              {
              • "type":"string",
              • "title":"ProjectName",
              • "description":""
              }
              ,
            • "connectionsite":
              {
              • "type":"string",
              • "title":"ConnectionSite",
              • "description":""
              }
              ,
            • "mwconnected":
              {
              • "type":"number",
              • "title":"MWConnected",
              • "description":""
              }
              ,
            • "mw_increasedecrease":
              {
              • "type":"number",
              • "title":"MW_IncreaseDecrease",
              • "description":""
              }
              ,
            • "cumulativetotalcapacity_mw":
              {
              • "type":"number",
              • "title":"CumulativeTotalCapacity_MW",
              • "description":""
              }
              ,
            • "mweffectivefrom":
              {
              • "type":"string",
              • "format":"date",
              • "title":"MWEffectiveFrom",
              • "description":""
              }
              ,
            • "projectstatus":
              {
              • "type":"string",
              • "title":"ProjectStatus",
              • "description":""
              }
              ,
            • "planttype":
              {
              • "type":"string",
              • "title":"PlantType",
              • "description":""
              }
              ,
            • "coordinates":
              {
              • "type":"string",
              • "title":"Coordinates",
              • "description":"Location of the project using British National Grid coordinates."
              }
              ,
            • "x":
              {
              • "type":"integer",
              • "title":"X",
              • "description":""
              }
              ,
            • "y":
              {
              • "type":"integer",
              • "title":"Y",
              • "description":""
              }
            }
          }
        }
      }
    }
}


                            

                        



                        
                            

    

        
    

            

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