Low-voltage electrical installations - Part 8-81: Functional aspects - Energy efficiency

IEC 60364-8-81:2026 provides additional requirements, measures and recommendations for the design, erection, operation and verification of all types of low-voltage electrical installation including local production and storage of energy for optimizing the overall efficient use of electricity.

It introduces requirements, recommendations and methods for the design and the energy efficiency (EE) assessment of an electrical installation within the framework of an energy efficiency management approach in order to get the best permanent functionally equivalent service for the lowest electrical energy consumption and the optimal availability and acceptable cost-effectiveness.

These requirements, recommendations and methods apply, within the scope of the IEC 60364 series, for new installations and modification of existing installations.

This document is applicable to the electrical installation of a building or system and does not apply to products. The energy efficiency of products and their operational requirements are covered by the relevant product standards.

It is possible that another standard provides specific requirements for a particular system or installation application (e.g