ENERGY CONSERVATION CASE STUDY:
THE GRAND WAILEA RESORT

The Grand Wailea Resort Maui

The Grand Wailea
A Waldorf Astoria Resort
3850 Wailea Alanui Drive
Kihei, Hawai’i 96753

Project Scope: Water Features, Pump System Retrofit & Upgrade

Results: Electricity consumption offset, 1.2 million kilowatt hours/yr.
First year electricity cost reduction, $380,028.00
Hawaii Energy provided a $202,048.00 rebate on the equipment

Equipment: Corrosion Resistant VFD & Water Pumps

Manager: Rob Hoonan, Chief Engineer

Purpose: Replace outdated water pumps with new energy efficient and corrosion resistant equipment.

Project Baseline: Existing water pumps were old, consumed a large amount of electricity and required an increase in ongoing maintenance. Rising electricity costs combined with old equipment created an opportunity to install new, energy efficient pump packages.

Project Solution: Haleakala Solar’ sister company, Haleakala Plumbing, working in conjunction with Aquatic Energy Solutions and the facilities management team at The Grand Wailea identified a corrosion resistant series of pumps that offer the latest technology in variable speed drive and energy efficient motors. A total of thirty-seven (37) new variable frequency drive and energy efficient water pumps were installed.

Summary: The tropical grounds of The Grand Wailea include an elaborate system of water features including the delicate Koi lagoon. Water pump requirements must be well balanced to accommodate the proper and unique environments to support swimming pools, fountains and lagoons. Koi fish have special needs for extremely clean water; aesthetics, efficiency, maintenance and filtration have to be in balance and the filtration system needs to run all the time. The sensitivity of the lagoon habitat required a pump replacement that did not disturb the population of Koi fish.

Profile: A Waldorf Astoria Resort, The Grand Wailea is a five star resort and one of the largest resorts on Maui. The Grand Wailea features 780 rooms, 9 pools, 4 spas, 7 restaurants and the Koi lagoon flows throughout the property.

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