Understanding your energy consumption patterns

In this section, we will take a closer look at an end user computing case study to understand our energy consumption within an enterprise better. There are also tools available on the market that can measure the energy consumption of your ICT devices in near real time, but for this case study, we will calculate all the steps manually.

In Chapter 6, IT Hardware Management, we used a model company with 10,000 computers. For this case study, we will assume that 80 percent are notebooks/laptops and 20 percent are desktops. We will conduct the study over a rolling 12-month period. We assume that the company is in an expansive phase and growing with 10 percent of employees annually, and every new employee receives a notebook instead of a desktop. Regarding energy demand, we use an energy consumption constant (kWh/hour) of 0.07 for desktop computers and 0.02 for notebooks when powered on, and 0.003 and 0.001, respectively, when they are in...