Efficiency behaviour is behaviour that satisfies the same function, but utilises less resources. This involves technology choice. For example, using fluorescent lightbulbs or water-saving shower heads and taps satisfies same needs but save much more energy and water. This kind of behaviour is easier to influence than curtailment as it usually involves a one off behaviour choice. Most of the time it involves a monetory investment in a more efficient technology, and this decision has a long-lasting impact. One example of this is making one decision to use fluorescent instead of incandescent lightbulbs will result in energy savings in the long-term. Hence, targeting this behaviour may be more effective.