Preparatory Academy Energy Lab|
77 North Washington Street, Boston, MA 02114
Location: Kamuela, Hawaii
Date Bid: Sep 2008 Construction Period: Oct 2008 to Jan
Total Square Feet: 5,902 Site: 2.57 acres.
Number of Buildings: One; 6 classrooms.
Building Size: Basement, 1,020; first floor, 4,882;
total, 5,902 square feet. Building Height: Basement, 10’; first
floor, 16’; floor to floor, 16’; total, 29’.
Basic Construction Type: New/5B Unprotected.
Foundation: Cast-in-place, reinforced concrete, slab-on-grade.
Exterior Walls: CMU, fiber cement siding. Roof: Metal,
membrane. Floors: Concrete, wood. Interior Walls: Wood
Structural Engineer: Walter Vorfeld & Associates - 10 Ulana
Street, Makawao (Maui), HI 96768
General Contractor: Quality Builders, Inc. - 64-5100 Puu Manu
Place, Waimea, HI 96743
Project Manager: Pa-ahana Enterprises, LLC - P.O. Box 109,
Kealakekua, HI 96750
Mechanical Engineer: Hakalau Engineering, LLC - 558 Kanoelehua
Ave., #101, Hilo, HI 96720
Electrical Engineer: Wallace T. Oki, PE, Inc. - P.O. Box 4070,
Hilo, HI 96720
Sustainability Consultant: Buro Happold Consulting Engineers, PC
- 100 Broadway, 23rd Floor, New York, NY 10005
Conceived as a high school science building dedicated to the study of
alternative energy, the new Energy Lab at Hawaii Preparatory Academy
functions as a zero-net-energy, fully sustainable building. The
project's fundamental goal is that of educating the next generation of
students in the understanding of environmentally conscious, sustainable
The project has achieved LEED Platinum certification and was awarded
Living Building status by the International Living Building Institute in
March 2011. Today, the Energy Lab strives as a living laboratory,
furthering its educational goals as a functioning example of
The Energy Lab was developed in response to the science curriculum it
houses. From small project rooms, to a large research center, to a
laboratory, spaces were designed to encourage student discovery,
exploration and experimentation. The building's configuration
facilitates scientific study both indoors and out, linking interior
spaces with the surrounding landscape. Students are surrounded by the
systems that they study, and constantly reminded of their methods. The
HPA Energy Lab offers a continuous sustainable "teaching moment".
Project Innovative Building Components
Naturally ventilated, the building employs experimental radiant cooling
systems as an alternative to air conditioning. Water is circulated at
night through thermal roof panels, cooled via lower evening
temperatures, and stored in a below-grade tank for use as chilled water
for air handlers during warm afternoons.
Its custom-designed automation system self-regulates cooling/heating,
water systems, and energy generation via input from 250 sensors,
maintaining interior temperature, relative humidity, and carbon dioxide
The shape of the building directs wind movement to create protected
outdoor educational areas, and enhances air flow through the building to
aid natural ventilation. The building was sited to utilize the strong
trade winds for ventilation as well as a teaching tool in the study of
Three key factors of building design:
Campus buildings designed by Vladimir Ossipoff, a renowned
Russian/Hawaiian Modernist. The energy lab is constructed of
board-formed concrete, glue-laminated timber structure, batten siding,
and corrugated metal roofing. It is composed of three shed-roofed bars
arranged along the hillside, in keeping with the spirit of Ossipoff's
original buildings in material and form.
Harnessing the natural forces of the wind and sun. The building shape
directs wind around the building.
Project-based pedagogy of the educational curriculum. The building plan
reflects the three stages of invention: 1) idea 2) research/simulation
3) construction/testing. Its openness fosters collaboration.
Total LEED® Points Achieved
Energy & Atmosphere
Materials & Resources
Indoor Environmental Quality
Innovation Design Process
Siding: James Hardie Fiber Cement Siding
Exterior Decking: TREX®
Windows: Breezway® Altair Louver Windows, Desco Windows
Daylighting: Palram Polycarbonate Panels