SIST EN ISO 25745-2:2015 PDF

Overview

EN ISO 25745-2:2015 (published by CEN / ISO) defines a standardized method to estimate and classify the energy performance of lifts (elevators). It specifies how to calculate annual energy consumption for single-unit traction, hydraulic and positive‑drive lifts using measured values, calculations or simulations. The standard applies to passenger and goods‑passenger lifts with rated speeds greater than 0.15 m/s and focuses on the operational phase (running, idle and standby energy).

Key topics and technical requirements

• Scope and applicability: Traction, hydraulic and positive‑drive lifts; reference for other lift types (service lifts, lifting platforms).
• Energy calculation methodology: Procedures for estimating daily and annual energy including:
  • Usage and number of starts per day
  • Average travel distance
  • Average running energy per metre
  • Start/stop energy consumption and energy of empty cycles
  • Running versus non‑running (idle/standby) time and related energy
  • Aggregation to daily and annual totals; provisions for energy storage systems
• Classification system: Energy classification for new, existing and modernized lifts with separate consideration of running performance and idle/standby performance (performance levels and final classification rules).
• Reporting and data tools: Required data collection, symbols and example calculations to ensure reproducible results.
• Exclusions: The standard does not cover energy consumers or influences not part of lift operation measurements/calculations, such as hoistway lighting, car and machine‑room HVAC, CCTV or building management systems, group dispatching effects, environmental conditions, power sockets or express‑zone travel impacts.

Practical applications and users

EN ISO 25745-2 is intended as a practical reference for:

• Building developers and owners comparing lift options by projected lift energy consumption
• Lift manufacturers, installers and maintenance providers for design, specification and modernization decisions aimed at energy efficiency
• Architects, consultants and sustainability assessors integrating lift energy into building energy models
• Inspectors and third parties performing lift energy classification or compliance checks with regional energy requirements

Use cases include pre‑purchase comparisons, retrofit/modernization evaluations, energy reporting and demonstrating compliance with energy‑performance policies.

Related standards

• ISO 25745‑1 - Energy measurement and verification (normative reference)
• ISO 25745‑3 - Energy calculation and classification for escalators and moving walks
• EN adoption: EN ISO 25745‑2:2015 (CEN endorsement)

Keywords: energy performance of lifts, ISO 25745-2, lift energy calculation, lift energy classification, traction lifts, hydraulic lifts, positive drive lifts, lift energy consumption.