Energy usage reduction is a justified hot topic of our times. Manufacturers have not been slow to produce a plethora of different types of energy saving equipment utilising various technologies. Some of these are sold on the back of a rudimentary survey and with only a single type of product as a solution. As engineers, we don't advise clients to make changes to their system without first gathering all the relevant information and system characteristics. Only then can energy management decisions be reliably made.

The purpose of a full assessment is to look at all the factors that determine first if a supply with its associated load types is a viable proposition for energy reduction, and then to establish the type of action and/or corrective equipment will give the best return.

The assessment needs to look at the types of load and the percentage of the total that they represent - e.g. what percentage of the load is HF lighting? What type and how much of the total is HVAC? What types of transformer are installed and what are the tap settings? What aspects of the installation might restrict the choice of type of corrective equipment? Is PFC equipment installed and if so, what type and what is its useful output? What are the levels of harmonic current and voltage distortion and how do they impact on energy costs, the transformers and useful lifetime of connected equipment?

These are some of the items that need to be evaluated in order to arrive at a meaningful conclusion. In other words, the quality and thoroughness of the survey is directly proportional to the success of any implemented corrective measure. E.g. we've surveyed sites where re-tapping the transformer achieved over 90% of the savings claimed by a Voltage Optimiser manufacturer.

As independent specialists our reports include the freedom to recommend any type of energy saving corrective action or remedial technology from any manufacturer.