Table of Contents

1		Introduction
Replacing old motors
2		Is it for me?
3		How much does it cost?
4		What are the benefits?
Soft starters
5		Is it for me?
6		How much does it cost?
7		What are the benefits?
Variable speed motors
8		Is it for me?
9		How much does it cost?
10		What are the benefits?
11		Step by step guide
12		Case studies
13		Where can I find out more?

Case studies

Radisson SAS Hotel experience

The Radisson SAS Hotel -Manchester Airport has set targets for reducing electricity consumption. Variable speed drives have been retrofitted on the air handling units and constant temperature pumps. The savings obtained by using VSD in an 11 kW supply fan and a 7.5 kW extracting fun were £3,844 / year with a payback of 10 months. The VSD for the 37 kW temperature pump enabled savings of £3,574 /year with a payback of 17 months

http://www.natenergy.org.uk/ppt/danfoss.htm

Demand Side Management in Montpelier

Changing to low energy bulbs, replacing inefficient fans and pumps and educating users reduced municipal energy costs by 11% despite a 26% increase in accommodation.

http://www.energie-cites.org/BD/PDF/mon001en.pdf