Monitoring Environmental Performance
Level 5
Appendix 9
Energy Improvement: Key Areas

Motive Power

High efficiency motors

  • These should be used for all high use new plant and equipment.

Variable speed drives

  • Motor type should be checked on all new equipment - it is best to buy a machine with a VSD, rather than retrofitting at a later date.

  • A feasibility study into retroffiting refurbished machines should be undertaken.


  • Where electric motors run for long time periods at low loads, motor controllers should be considered.

  • New controllers should be considered with new and refurbished equipment. Fitting VSD's is perhaps most feasible for old equipment.

  • Load sensing control systems should be considered for idling plant to turn plant off over a specified period.