David & Lucile Packard Foundation Headquarters


Integral Group performed MEP engineering, commissioning, and post occupancy verification and tracking of the building performance to ensure Zero Net Energy operation for this two-story office building. Highly efficient systems and building envelope reduce energy demand by 60 percent over code baseline, while the remaining required power is supplied by onsite PV power generation. The building is currently operating at 20 percent Net Positive.

This was the largest project to receive Zero Net Energy certification by the Living Future Institute at the time of certification. The building is also LEED Platinum certified. Due in part to its prominence in funding conservation, science, and environmental causes, the foundation has chosen to lead by example by employing replicable building methods, materials and technologies that can transform the marketplace.

The building operates in natural ventilation model for half the year, where the mechanical systems shut down and occupants are instructed to open their windows for fresh air. Thermal energy storage, chilled beams, dedicated outside air systems, and circuit-by-circuit power monitoring are some of the facility’s novel features. The project uses 50 percent less water than baseline, and captures and filters rainwater for reuse in landscaping and toilet flushing. The facility also features a green roof.

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