Achieving significant energy efficiency depends on different factors. For example, on the type of building, the condition of the building, on the equipment being used, the condition of that equipment, the financial situation, and motivation. However, in general, energy efficiency and associated financial savings can be achieved by the following:
- Technical measures:
- Using electrical equipment with higher level of energy efficiency
- Using non-electrical equipment with higher level of energy efficiency
- Effective control and optimisation of the operation of energy-consuming equipment, such as machine controls, and presence/motion sensors for switching light systems on and off, where appropriate
- Reducing energy requirements in buildings (cooling, heating, lighting)
- Measuring and monitoring energy use
- Using solar thermal technology for heat generation instead of electricity or fossil fuels
- Non-technical measures:
- Improvement of organisation and management structures, changing behaviour/ habits that affect energy use (for example. switching off equipment when it is not required / not being used)
- Informing, educating and increasing awareness of energy efficiency and how to use equipment more efficiently, in particular by providing information on the amount of energy consumed by equipment
One of the first and best ways for quantifying where, when, why and how energy is being used is an energy audit. Based on that, opportunities to improve efficiency and decrease energy costs can be identified. Some energy-saving measures require little expense (such as changing light bulbs), while other require significant investment.