This is possibly the most frequently asked question when it comes to LED-UV technology, and there is no standard answer. The more highly reactive ink does mean that energy savings are possible in principle. As an LED UV system can be used immediately after activation, there are no stand-by times. A format switch also allows the LEDs to be switched off outside of the print format, meaning further potential for savings.
Any comparison between a conventional UV system and an LED system must take into account that this system also changes the chemistry of the inks. An effective comparison needs to be made on the basis of a defined drying outcome, which in turn allows the necessary drying output to be derived. Standby/production times and average print format also have to be taken into account to make the result meaningful.