Energy efficient lighting system

LED lighting on Celebrity Solstice, Celebrity Cruise Lines, source: MEPC 68/INF.16

Use of energy efficient lighting equipment such as low energy halogen lamps, fluorescent tubes and LED (light emitting diode) in combination with electronically controlled systems for dimming, automatic shut off, etc. is continuously developed as the focus on energy and environment has increased. The new technology has been applied only to a limited extent to the shipping industry and standard normal design does not include low energy lighting. Implementing energy efficient light system will in addition reduce the maintenance hours and operating cost.

Applicability and assumptions

LED lighting on Celebrity Solstice, Celebrity Cruise Lines, source: MEPC 68/INF.16

Energy efficient light systems can be installed on all vessel types and ages, where passenger vessels have the highest reduction potential.

The total energy consumed for lighting on a normal merchant ship can be estimated to be 0.25% to 5% of the total electrical power consumed and is believed to be higher for cruise and passenger ships (>10%). Since most energy efficient lighting systems have an equal or longer lifetime than normal lighting systems, the additional operational costs are set to zero.

Cost of implementation

Additional cost of $100,000 (USD) compared to the traditional lighting installations on normal ships and $200,000 to $1,000,000 (USD) on passenger and cruise ships.

Reduction potential

The emission reduction potential is estimated from the total auxiliary engine consumption on normal merchant ships and is assessed to be in the range of 0.25% to 5%.

Other References

1. Air pollution and energy efficiency / IMO energy efficiency appraisal tool