Very often I receive questions from users of International Standard ISO 50001: what is “significant energy use” and how can we determine it in practice?
I think there are a lot of possibilities to determine “significant energy use” but we recommend simple and well-known method.
Identifying the areas of significant energy use is a part of energy review in any Energy Management System which is developed or implemented in the organization. It is very important for users of ISO 50001 because knowing of your areas of significant energy use helps you to determine the scope and boundaries of your Energy Management System and to spread correctly your efforts which are directed to control energy use and energy consumption.
It can seem difficult at first sight, but I hope our proposition will help you to solve this problem.
First you should collect data of consumption of different kinds of energy. When you collect the data, you will see that it has different units of measurement. So you will have to bring your data to a common standard. For that you can use unit converter by International Energy Agency (http://www.iea.org/statistics/resources/unitconverter/). The converter is free.
We recommend evaluating the volume of energy consumption in money terms as well.
After conversion and getting your energy consumption in money terms you can analyze it and determine your sphere of significant energy use.
Finally you can use Pareto analysis to determine and identify your areas of significant energy use, scope and boundaries of your Energy Management System.
Tags: ISO 50001