Grand Wailea Resort

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Client: Resort Energy Ventures
Location: Hawaii, USA

POWER developed conceptual and preliminary engineering and prepared preliminary bid documents for a greenfield combined heat and power (CHP) project at the Grand Wailea Resort on the Island of Maui. The two-phase project provided the resort’s management with decision points to assess the viability of the project and consider projected costs and savings. Once built, the CHP system would provide the resort with a means to produce its own electricity, reduce its dependency on the local electric utility, and provide substantial savings in its energy costs at the 780-room hotel, spa, and convention center.

The initial stage determined the resort’s energy requirements, assessed its existing energy infrastructure, and identified the technology options that would best meet its energy requirements. Our engineering team provided by POWER Engineers conducted a site visit, interviewed the resort’s key personnel, performed a desk-top regulatory review, and performed a financial analysis on three technology alternatives. We prepared a schematic design of the preferred system and a ±30 percent cost estimate for a Decision Gate Report that allowed the resort to decide if it wanted to continue with the project. As the preferred alternative, the POWER team selected a system of seven Capstone propane-fired microturbines with an output of 1.4 MW of electricity. This system was chosen because the microturbines are readily availability and have comparatively low air emissions, low noise, and flexible fuel options.

Because of the potential for substantial long-term savings by converting to the CHP system, the resort’s management decided to take the project to the next stage. POWER’s team developed preliminary design and a cost estimate with a 90 percent confidence level for the new system and prepared a bid package to allow the resort to select an EPC contractor to provide final design and install the new system. The bid package included preliminary equipment specifications, preliminary infrastructure layout, preliminary equipment proposals, and a preliminary construction proposal. These items were included in a final Design Development Level Report to the resort.