SEPD and SHEPD Licence Areas

network-capacity

Network Capacity

Creative Commons Attribution 4.0

embedded_capacity_register

We are the electricity Distribution Network Operator (DNO) responsible for delivering power to over 3.8 million homes and businesses across central southern England and the north of Scotland. We serve some of the most diverse and unique geographies across the UK, and keep customers and communities connected whilst developing the flexible electricity network vital to achieving net zero.

Our skilled teams are based right across the regions we serve, from the bustle of West London to the smallest villages in the Highlands and Islands of Scotland.  They are supported by engineering and customer service teams based in major offices and depots in centres like Reading, Portsmouth, Perth and Inverness.

ssen-distribution

SSEN Distribution

The Embedded Capacity Register (ECR) interactive map provides user defined map views, filtering and aggregated totals to provide greater insights into generation and storage connected to, or accepted to connect to SSEN's electricity networks

SSEN Embedded Capacity Register GIS Dashboard

The Latest Version of the SSEN Embedded Capacity Register v4.0

Information on generation and storage resources (≥50KW) that are connected, or accepted to connect, to the electricity distribution networks owned and operated by us and it will be updated on a monthly basis.

SSEN Embedded Capacity Register v4.0, Latest

The Embedded Capacity Register (ECR) has been developed to provide better information to electricity network stakeholders on connected resources and network requirements. Each Distribution Network Operator (DNO) will host a register which will provide accessible information at a local and national level. The register uses a format agreed through the Energy Networks Association's Open Networks project, an industry initiative aimed at transforming the operation of energy networks and delivering a smart grid.

SSEN ECR Part 1 - 1MW August 2025 CSV

SSEN ECR Part 1 - 50kW August 2025 CSV

Embedded Capacity Register 4.0 August 2025

Embedded Capacity Register 4.0 July 2025

Embedded Capacity Register 4.0 June 2025

Embedded Capacity Register 4.0 May 2025

Embedded Capacity Register 4.0 April 2025

Embedded Capacity Register 4.0 March 2025

Embedded Capacity Register 4.0 February 2025

Embedded Capacity Register 4.0 January 2025

Embedded Capacity Register 4.0 December 2024

Embedded Capacity Register 4.0 November 2024

Embedded Capacity Register 4.0 October 2024

Embedded Capacity Register 4.0 September 2024

Embedded Capacity Register 4.0 August 2024

Embedded Capacity Register 4.0 July 2024

The Embedded Capacity Register (ECR) has been developed to provide better information to electricity network stakeholders on connected resources and network requirements. Each Distribution Network Operator (DNO) will host a register which will provide accessible information at a local and national level. The register uses a format agreed through the Energy Networks Association's Open Networks project, an industry initiative aimed at transforming the operation of energy networks and delivering a smart grid. 


Embedded Capacity Register 4.0 June 2024

Embedded Capacity Register 4.0 May 2024

Embedded Capacity Register 4.0 April 2024

Embedded Capacity Register 4.0 March 2024

Embedded Capacity Register 4.0 February 2024

Embedded Capacity Register 4.0 January 2024

The Embedded Capacity Register (ECR) has been developed to provide better information to electricity network stakeholders on connected resources and network requirements. Each Distribution Network Operator (DNO) will host a register which will provide accessible information at a local and national level. The register uses a format agreed through the Energy Networks Association's Open Networks project, an industry initiative aimed at transforming the operation of energy networks and delivering a smart grid. 

Our register provides information on generation and storage resources (>=50kW) that are connected, or accepted to connect, to the electricity distribution networks owned and operated by us and it will be updated on a monthly basis. The register also includes information on the flexibility services that are being provided by connected resources, assisting to control or schedule demand and/or generation to reduce network constraints.

Embedded Capacity Register 4.0 December 2023

Information on generation and storage resources (≥50KW) that are connected, or accepted to connect, to the electricity distribution networks owned and operated by us and it will be updated on a monthly basis.

SSEN Embedded Capacity Register v4.0, November 2023

SSEN Embedded Capacity Register v4.0, October 2023

SSEN Embedded Capacity Register v4.0, September 2023

SSEN Embedded Capacity Register v4.0, August 2023

SSEN Data Triage record for Embedded Capacity Register

Register Definitions and explanations within the Embedded Capacity Register.
For each site that meets the criteria to be included in its Embedded Capacity Register, each DNO/IDNO Party shall use reasonable endeavours to populate all relevant fields in the Embedded Capacity Register. Where the DNO/IDNO Party does not hold data for a specific field for a specific site, then the DNO/IDNO Party will populate the relevant field with the words ‘data not available’. If a specific field is not applicable to a specific site, then the DNO/IDNO Party will populate the relevant field with the words ‘data not applicable’.

Embedded Capacity Register Attributes and Definitions

This is an overview of what the embedded capacity register is from the Distribution Connection and Use of System Agreement (DCUSA). 

Relevant Third Party Resource - Embedded Capacity Register Overview

A brief outline of the methodology used to develop the Embedded Capacity Register dataset. 

Methodology Statement - Embedded Capacity Register

The data sharing team have facilitated a data surgery with the Embedded Capacity Register (ECR) that is available on SSEN Distributions Data Portal. This session was recorded to ensure that all of our users have an opportunity to engage with our data surgery. This session had a focus on bringing awareness to the ECR and performing a deep dive into this data with clarity on future enhancements.

ECR Data Surgery

The data sharing team have facilitated a data surgery with the Embedded Capacity Register (ECR) that is available on SSEN Distributions Data Portal. Please see the slides that we used through this session. 

ECR Data Surgery Slides

Embedded Capacity Register

asset-management

Asset Management

sepd_long_term_development_statement

Southern Electric Power Distribution Long Term Development Statement Part 1 and 2 issued May 25

Southern Electric Power Distribution long term development statement part 1 & 2 May 25

SEPD Long Term Development Statement Schematic Diagrams issued May 25

Southern Electric Power Distribution long term development statement schematic diagrams May 25

Southern Electric Power Distribution Long Term Development Statement Tables Issued May 25

 Southern Electric Power Distribution long term development statement tables May 25

Southern Electric Power Distribution Long Term Development Statement Part 1 and 2 issued May 2024

SEPD Long Term Development Statement part 1 & 2 May 2024

Southern Electric Power Distribution Long Term Development Statement Tables Issued May 2024

SEPD LTDS Tables May 2024

SEPD Long Term Development Statement Part 1 - May 2023

SEPD Long Term Development Statement Part 1 and 2 issued May 2023

SEPD Long Term Development Statement Part 1 and 2

SEPD Long Term Development Statement Schematic Diagrams issued Nov 2022

SEPD LTDS 132 and 33 kV Geographic Map issued Nov 2022

SEPD LTDS 66 and 22 kV Geographic Map issued Nov 2022

Southern Electric Power Distribution Long Term Development Statement tables issued May 2023, containing: circuit data, transformer data, demand data, 132kV fault level, 66-6.6kV fault level, generation, interest in connection, and busbar names lookup.

Southern Electric Power Distribution long term development statement tables May 2023

SSEN Data Triage record for SEPD Long Term Development Statement

Long Term Development Statement Data Definitions and explanations for the various components of the dataset

Long Term Development Statement Data Definitions

Southern Electric Power Distribution Long Term Development Statement part 1 and 2 issued November 23

SEPD LTDS Part 1&2 Nov 23

SEPD LTDS 66 & 22kV Geographical Map issued November 23

SEPD LTDS 66 & 22kV Geographic Map Nov 23

Southern Electric Power Distribution Schematic Diagrams issued November 2023

SEPD LTDS Schematic Diagrams Nov 23

Southern Electric Power Distribution Map Issued November 2023

SEPD LTDS 132&33kV Geographic Map Nov 23

Southern Electric Power Distribution Long Term Development Statement Tables Issued November 2023

SEPD LTDS Tables Nov 23

Southern Electric Power Distribution Map Issued November 2024

SEPD LTDS 132 and 33 kV Geographic Map Nov 24

SEPD LTDS 66 and 22 kV Geographic Map issued Nov 2024

SEPD LTDS 66 and 22 kV Geographic Map Nov 24

Southern Electric Power Distribution Long Term Development Statement Part 1 and 2 issued November 2024

Southern Electric Power Distribution long term development statement part 1 & 2 Nov 2024

SEPD Long Term Development Statement Schematic Diagrams issued Nov 2024

Southern Electric Power Distribution long term development statement schematic diagrams Nov 24

Southern Electric Power Distribution Long Term Development Statement Tables Issued November 2024

Southern  Electric Power Distribution long term development statement tables Nov 24

The data sharing team have facilitated a data surgery with the Long Term Development Statement (LTDS) data assets that are available on SSEN Distributions Data Portal. This session was recorded to ensure that all of our users have an opportunity to engage with our data surgery. This session had a focus on bringing awareness to the LTDS and performing a deep dive into this data with clarity on future enhancements.


The Recordings have been split into two videos:


Part 1- Focus on explaining the LTDS

Part 2- Future plans with the CIM format


If there are any questions please reach out to the data@ssen.co.uk

LTDS Data Surgery Part 1 (26th February 2025)

LTDS Data Surgery Part 2 - CIM Formats (26th February 2025)

Outline of the purpose of the LTDS dataset. 

LTDS Purpose and Overview

A brief outline of the methodology used to develop the SEPD Long Term Development Statement. 

Methodology Statement - SEPD Long Term Development Statement

SEPD Long Term Development Statement

ssen_smart_meter_prod_lv_feeder

Explore Smart Meter LV Feeder data:  

1. Start with the lookup tool to identify your LV Feeder Dataset ID. You can enter your postcode to find the associated Dataset ID.  
2. Switch to the second tab where you can preview the actual data. You can use filtering functionality to get only a subset of the larger data table. Use your Dataset ID number here.  
3. Explore the data relevant to your LV Feeder Dataset. You can also download it to conduct further analysis in your own tool. 
 
4. If the data you are looking for is older than 365 days, you can browse raw data files available in the third tab. All data is stored as flat files and organized by date so that you can find and download specific data files in CSV format.

Smart Meter LV Feeder Data

SSEN Distributions video walkthrough guide for the Smart Meter LV Feeder Usage data asset 

Smart Meter LV Feeder Usage Video Walkthrough

SSEN Distributions PDF walkthrough guide for the Smart Meter LV Feeder Usage data asset

Smart Meter LV Feeder Walkthrough Guide

The 'Orkney Smart Meter Volumes' data set has been created by cross referencing the number of smart meter installs as of 26.02.2025 at a dataset_id level via the total_mpan_count column in the open data portal, Smart Meter LV Feeder Data 'LOOKUP' tab and cross referencing this with the associated postcode data available through the full export file available via the open data portal Smart Meter LV Feeder Data page. The list of Orkney postcodes have been taken from doogal.co.uk

Orkney Smart Meter Volumes

This is an overview of the benefits of smart meters from the energy regulator Ofgem. 

Relevant Third Party Resource - Ofgem - Get a Smart Meter

A brief outline of the methodology used to develop the Smart Meter LV Feeder Usage dataset. 

Methodology Statement - Smart Meter LV Feeder Usage

Quarterly statistics on the rollout of smart meters in Great Britain. 

Relevant Third Party Resource - Smart Meter Statistics

Reports on the impact of the smart metering roll out on household energy usage and energy savings. 

Relevant Third Party Resource - Impact of Smart Meter Usage 

Aggregated half hourly smart meter energy consumption data from several UK DNO's. 

Relevant Third Party Resource - Aggregated DNO Smart Meter Data

The data sharing team have facilitated a data surgery with the Smart Meter Data that is available on SSEN Distributions Data Portal. This session provided all of our users to have an opportunity to engage with our internal teams. This session had a focus on bringing awareness to the Smart Meter Data and performing a deep dive into this data with clarity on future enhancements. If you have any questions please reach out to the data@ssen.co.uk mailbox.

Smart Meter Data Surgery Slides

Smart Meter LV Feeder Usage

ssen-substation-data

Substation identification and location with coordinates for both north and south.

SSEN Substation Data

﻿Owner Type

Owner Name

Whether the substation is Ground or Pole mounted

Type

Class

Number

Status

Data Confidence

Fence Type

The SSEN Operating Area in which the substation is located

Operating Area

Locality

Location X mm

Location X m

Location Y mm

Location Y m

Leader Line

Extent of the substation area in square metres

Extent

Record of the SSEN Open Data Triage for the underlying Shapefile data, that has provided the source for this Substation data.

SSEN Data Triage Record for Shapefile Data

A brief outline of the methodology used to develop the SSEN Substation Data. 

Methodology Statement - SSEN Substation Data

network-flexibility

Network Flexibility

low_carbon_technologies

Regen Data used for projections of energy generation and storage by type, as well as installed capacity for each scenario. Visualisations, Licence Area Projections and 11kV dataset categorised by DNO licence area.

SEPD DFES 2023 Licence Area and 11kV Datasets

SHEPD DFES 2023 Licence Area and 11kV Dataset

SEPD DFES 2022 - Licence Area and 11kV Datasets

SHEPD DFES 2022 - Licence Area and 11kV Datasets

EV Charger forecasts for the Consumer Transformation DFES scenario in the SEPD licence area FES2020

SEPD OA Consumer Transformation EV Charger FES2020.xlsx

The LC Technology type, EV Charger, Heat Pump etc

Technology

The subcategory of the LC Technology. For EV, this would include Car Parks, Destination, On-Street, Workplace. For Heat Pumps, this is domestic or non-domestic, electric or gas back-up.

Sub-technology

Open_Networks_Building_Block

Units

Scenario

Licence_area

Local Authority District name (as per Office for National Statistics’ 2011 area classifications)

ladnm

Local Authority District identification code (as per Office for National Statistics’ 2011 area classifications)

ladcd

Middle Layer Super Output Area name (as per Office for National Statistics’ 2011 area classifications)

msoa11nm

Middle Layer Super Output Area identification code (as per Office for National Statistics’ 2011 area classifications)

msoa11cd

Lower Layer Super Output Area name (as per Office for National Statistics’ 2011 area classifications)

lsoa11nm

Lower Layer Super Output Area identification code (as per Office for National Statistics’ 2011 area classifications)

lsoa11cd

Output Area identification code (as per Office for National Statistics’ 2011 area classifications)

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