Page 20 - Zero Net Energy Case Study Buildings-Volume 1

CASE STUDY NO. 1 PACKARD FOUNDATION HEADQUARTERS BUILDING
Packard Foundation Headquarters Building
Case Study No. 1
Data Summary
Building Type:Two-Story Office Location: Los Altos, CA
Gross Floor Area: 49,000 gsf Occupied: July 2012
Energy Modeling Software:
eQuest version 3.64
Modeled EUI (Site)
19.4 kBtu/sf-year
Measured EUI (Site)
20.7 kBtu/sf-year (2012) 14.1 kBtu/sf-year (2013)
On-Site Renewable Energy System Installed
285 kW (DC) Solar PV
Measured On-Site Energy Production
282,000 kWhr/year (2013) 19.6 kBtu/sf-year (2013)
Owner/Client
David and Lucile Packard Foun- dation
Design Team
Architect: EHDD Architecture, San Francisco CA
Structural Engineer: Tipping- Mar & Assoc., Berkeley, CA
Mechanical / Plumbing Engi- neer: Rumsey (Integral Design Group), Oakland CA
Electrical Engineer and Light- ing Designer: Integrated Design Associates - IDeAs (now part of Integral Design Group, Oakland CA) and Janet Nolan, SF.
Landscape Architect: Joni Ja- necki & Assoc., Santa Cruz, CA
Daylighting Consultant: Loisos Ubbelohde, Oakland, CA
General Contractor:
DPR Construction
4
The Packard Foundation Headquarters is an appropriate first case study for this monograph: the project planning took an exemplary wide and thorough view of all energy and carbon emission issues, incorporated the best in current design thinking and created some technological innova- tions that help move the building industry forward in improved energy performance. The project represents a very high standard across all aspects of planning, design, construction and occu- pancy, creating a model for all aspects of zero net energy building design.
Completed and occupied in mid-2012, the building has experienced its first full year of operation, successfully demonstrating that the planning and design objectives have been well met. The building recently received a “net zero energy certification” from the International Living Future In- stitute (ILFI) as part of its rigorous certification program known as The Living Building Challenge.
As will be the case with the later case studies, the project discussion will follow the common process elements of target setting, designing to the target, building to the design and, finally, monitoring, diagnosis and correction. This four-step process will be specifically detailed by the following sequence of topics for each project:
• The design strategies to achieve zero-net-energy performance (site ZNE1);
• The energy modeling used as part of an integrated design approach;
• A comparison with the modeling results to the actual measurements after occupancy of
energy use;
• Measured data (12 months) comparison of building energy use versus on-site renew-
able energy production, proving zero-net-energy performance;
• Any corrective measures required to overcome practical problems that arose after oc-
cupancy to reach or maintain ZNE performance.
A complete description of the project history for the Packard Foundation Headquarters, as well as other aspects of the building’s sustainable design, can be found in a report2 commissioned by the Foundation and available through its website.
Background
Discussion about a new headquarters building for the David and Lucile Packard Foundation be- gan in 2006, with building programming beginning in earnest in 2008. Because the Foundation engages in awarding grants in conservation and science, with an emphasis on those activities that lead to a reduction of carbon emissions around the world, a high level of sustainable design was a principal goal for the project. This included exceeding a LEED-Platinum standard for all areas of sustainability as well as the specific objective of constructing a facility that would use zero net energy over the course of a year and have a zero carbon footprint.
The Knapp Report3 includes an extensive discussion of the actions taken by the Foundation and its consultants to address the zero carbon objective, which includes accounting for carbon emis- sions due to the worldwide activities of the organization and staff. This monograph focuses on the Foundation’s success in achieving the specific goal of annual zero net energy performance.
1 See Introduction to this monograph for the definition of site ZNE.
2 Knapp, Robert H., “Sustainability in Practice—Building and Running 343 Second Street”, Da- vid and Lucile Packard Foundation, October 2013, http://www.packard.org/about-the-foundation/ our-green-headquarters/.
3 Ibid.
Zero Net Energy Case Study Buildings: Volume 1