Carnival Corporation - 2012

Diana Sanchez | Duke University

  • Diana Sanchez shares a laugh with co-fellows during a coffee break at the 2012 EDF Climate Corps training.
Project Type: 
HVAC | Lighting | Manufacturing Equipment
Facility Type: 
Office Building | Other

At Carnival Corporation, Diana Sanchez interviewed crew members and analyzed operations onboard several cruise ships to identify energy efficiency projects in lighting, HVAC and kitchen hardware.

In terms of lighting, Sanchez identified areas on the ship that leave their lights on 24 hours a day, even though they are utilized only about a third of that time. She recommended that Carnival install occupancy sensors, which would shut the lights off when the areas are unoccupied and could save the company approximately $16,000 per year. 

To improve HVAC efficiency, Sanchez recommended installing frequency converters on the fans of air handling units in several public spaces. This could capture annual savings of more than $25,000.

In cruise ship "galleys," or kitchens, Sanchez recommended replacing current equipment with ENERGY STAR appliances, when it is replaced. This could save Carnival approximately $11,000 per year.

These recommendations, in addition to others made by Sanchez, could save Carnival more than 400,000 kilowatt hours annually on every ship. Her recommendations could be scaled across the entire Carnival fleet - 124 ships.