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Hotels

High energy efficiency can have an immediate positive effect on your operating budgets.

The first step you should take is to develop an energy management program. An energy management program studies electricity usage, how and where electricity is used and evaluates ways to save in order to reduce and implement electricity conservation measures to increase a building’s operating efficiency. It can also involve training employees on electricity-saving steps they can take.

Typical Electricity Use for Hotels

Disclaimer: Figures are based on Hawaiian Electric Company data and an average electric consumption of 16 kilowatt hour/square-foot-year. Electricity use is affected by weather; number of occupants; building size and thermal integrity; cooling, heating, and water systems; and miscellaneous equipment.

An energy management program can include:

Heating, Ventilating, Air Conditioning (HVAC)

HVAC may account for 40 to 50 percent of total electricity usage, so energy conservation measures for HVAC can have the greatest impact on electric bills.

Here are some ways to save energy on HVAC systems:

  • Installing energy-efficient air conditioning/chiller equipment.  
  • Installing HVAC fans and pumps with variable frequency drives that can control motor and pump speeds, as well as the electricity needed to run the fans and pumps.
  • Putting window film on to reduce heat loss.
  • Adding insulation for windows and doors, such as weather stripping and thresholds.
  • Installing a timer on supply air fans.
  • Utilizing energy management systems.
  • Decreasing the daytime thermostat setting.
  • Installing a night setback procedure.
  • Installing an economizer.

Lighting

Lighting may account for more than 20 percent of the total electricity used by a hotel. A lot of hotel lighting is still comprised of inefficient incandescent bulbs.  We have a number of rebates and measures that can help store lighting become even more energy-efficient which include:

  • Replacing older, less efficient T12s with low-wattage T8 and T5 lamps with electronic ballasts.
  • Installing reflectors which enables delamping by reducing the number of lamps needed.
  • Replacing your incandescent bulbs with CFLs which use 75 percent less energy and last 10 times longer than traditional bulbs.
  • Replacing fluorescent light exit signs with LED exit signs.
  • Installing induction lighting which offers long-lasting, low-maintenance solutions to hard-to-reach places and public facilities.  
  • Installing pulse-start metal halide and high-pressure sodium lamps. These lamps provide high-intensity lighting, long lamp light and high energy efficiency for spaces where lights are used for many hours and have high ceilings.  
  • Adding occupancy sensors, or automatic lighting controls, this switches off the lights when people leave the room and turn them back on when people return. Programmable timers can also turn lights on and off at appropriate hours.  
  • Installing light tubes and other natural light maximizers that can replace some electric lighting.

Hot Water

Hot water is used for showers, hand-washing and restaurant operations.  Energy conservation measures that can be implemented include:

  • Installing shower flow restriction devices to reduce water usage.
  • Installing insulation on water heater tanks and pipe.
  • Repairing leaks.
  • Installing more efficient water-heating equipment.

Miscellaneous Equipment

Miscellaneous equipment, such as room electronics, office equipment, cash registers and elevators can amount to more than 20 percent of electricity used in a hotel. Consider purchasing ENERGY STAR® qualified electronics that are more energy-efficient than non-qualified products. Finally, ensure that equipment is well-maintained to maximize energy savings.

For more information, call (808) 839-8880 or email hawaiienergy@leidos.com.