Standards and guidance

We develop and maintain the engineering recommendations, reports and guidance used by the network operators to support the management of a safe and reliable electricity network. All engineering recommendations, reports and guidance documents can be found on the ENA Engineering Document Catalogue.

ENA documents and specifications are drafted to assist our members in complying with relevant statutory obligations as set out in their Licence Conditions, and in the Distribution Code and its supporting documents.

Documents produced by us are developed using input from a combination of experts within our membership, the use of specialist external consultants, relevant UK and GB Trade Associations and industry bodies, manufacturers, suppliers, and users of the documents.

Our documents primarily consist of:

• Technical Specifications (TS) typically based around/on International (IEC) and British and European (BS EN) standards with additional UK and GB requirements and;
• Engineering Recommendations (EREC) and Reports (ETR & EREP) typically focused on best practice or guidance information, however application of EREC documents that support Distribution Code compliance is mandatory.

ENA members have developed three guides to the standards for suppliers and customers, including how to contact your distribution network operator in the event of a query or claim:

• Metered Connections Guaranteed Standards of Service for Electricity Distribution Companies in England, Wales & Scotland (April 2024)
• Unmetered Connections Standards of Service for Electricity Distribution Companies in England, Wales & Scotland (April 2024)
• Guaranteed Standards of Performance for Metered Demand Customers of Electricity Distribution Companies in England, Wales & Scotland (April 2024)