The "SPD LTDS Appendix 1 Circuit Data (Table 1)" data table provides data that is derived from power system analysis software and, therefore, the circuit parameters detailed are based on the equipment between analytical node points. As some circuits may have intermediate node points, or a number of components, this aspect should be taken into consideration when assessing overall (end-to-end) circuit parameters. Those circuits labelled S/C, or short-circuit, represent circuit breakers, switches, or busbar connections of effectively zero impedance.Click here to access our full Long Term Development Statements for both SP Distribution (SPD) & SP Manweb (SPM).The table gives the following information:Resitance, reactance and susceptance per GSPCircuit from and to for each GSPWinter, summer, spring and autumn maximum continuous ratingFor additional information on column definitions, please click on the Dataset schema link below. DisclaimerWhilst 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). Data TriageAs 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 Long Term Development Statement dataset.To access our full suite of Data Triage documentation, visit the SP Energy Networks Data & Information page.Download dataset metadata (JSON)

The "SPM LTDS Appendix 1 Circuit Data (Table 1)" data table provides the data that is derived from power system analysis software, and therefore the circuit parameters detailed in the tables are based on the equipment between analytical node points. As some circuits may have intermediate node points, or a number of components, this aspect should be taken into consideration when assessing overall (end-to-end) circuit parameters. Those circuit sections labelled S/C, or short circuit, represent circuit breakers, switches, or busbar connections of effectively zero impedance.Click here to access our full Long Term Development Statements for both SP Distribution (SPD) & SP Manweb (SPM).The table gives the following information:Positive impedence sequence R & X per substation groupZero impedence sequence R & X per substation groupSusceptance per substation groupNode 1 and 2 per substation groupWinter, summer, spring and autumn maximum continuous ratingFor additional information on column definitions, please click on the Dataset schema link below. DisclaimerWhilst 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). Data TriageAs 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 Long Term Development Statement dataset.To access our full suite of Data Triage documentation, visit the SP Energy Networks Data & Information page.Download dataset metadata (JSON)