Chiller optimization saves Hawaii Prince Hotel more than $62K annually
For nearly 30 years, Oahu's Hawaii Prince Hotel Waikiki and Golf Club has been a popular retreat for travelers from all across the world as well as Hawaii residents. Its central location provides guests with an opportunity to experience everything Hawaii has to offer – from world-class beaches and cultural experiences, to rainforest hikes and waterfall trails. To support the preservation of Hawaii’s culture and environment, Hawaii Prince constantly focuses on new ways to conserve resources and reduce its carbon footprint.
For more than 10 years, Hawaii Prince has worked with Leidos and Hawaii Energy, the state’s ratepayer energy efficiency program, to identify ways to reduce energy costs throughout their 447,000 square-foot property. While several energy-efficient improvements had been completed over the years – including the installation of high-efficiency LEDs, waterfall pumps, and ventilation systems – the hotel property looked to generate additional energy savings through more advanced projects. Upon further analysis, Leidos’ energy advisors identified an energy-saving project that fit the bill: upgrades to the property’s existing chiller system.
Hawaii Prince’s existing three 500-ton chiller system operated continuously – providing cooling for its 28-floor facility, including all 541 guest rooms, the lobby, banquet spaces, gift shops, cafés, and five restaurants. With the help of $150,000 in incentives from Hawaii Energy, the hotel was able to replace the three existing chillers with energy-efficient, water-cooled units. Additionally, new equipment technology allows the hotel to run a single chiller continuously while the other two units operate on an as-needed basis, especially during hotter summer months or when the hotel is near or at full occupancy.
The project reduced the electric load on the chiller system while also helping the central plant to run more efficiently with airflow meters, power meters, and temperature sensors. These meters and sensors continuously monitor equipment operating conditions, minimize preventable energy losses, and optimize overall building energy management. In total, these chiller enhancements are saving Hawaii Prince an estimated 245,500 kilowatt-hours and $62,407 in electric costs each year, while also reducing CO2 emissions by 255 tons.
Is your utility or organization looking to launch emerging energy efficiency offerings like chiller optimization? Learn more about Leidos program solutions that can deliver significant energy savings to your customers and your energy efficiency portfolio.