**3. Opportunities to improve industrial energy efficiency by 2020**

The main goal of this review of the past is to forecast for the year 2020 with today's knowledge. The review is based on an article (Aro, 2009).

#### **3.1. Pumps and fans**

The electric motors of pumps and fans consume electrical energy. When looking at only the improvements opportunities in the motors, pumps and fans, no large consumption reductions can be expected by 2020. However, the situation is not necessarily all that bad. The system level can give opportunities. This means how the components are used as a part of technical systems. The lower the air and liquid flows with fewer pressure lifts, the smaller the electricity consumption. At the systems level, frequency converters and more energy efficient motors give a good option to achieve the best possible level of efficiency with fans and pumps. At the systems level, there are always endless opportunities for energy savings and efficiency improvements.
