30 Nov 2011

Bend Broadband Vault Data Center

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Owner: Bend Broadband Vault
Project Lead Consultant: Logicalis
Project Manager: Project Management Advisors, Inc
MEP Designer: HP-EYP Mission Critical Facilities MEP Designer
Architect: Mildren Design Group & D.Coop, LLC
Landscape Design: Botanical Developments
General Contractors: Hoffman Construction
Sub-Contractor: R&H Construction
Commissioning Agent: Glumac
Energy Modeler: Environmental Building Strategies
LEED Consultants: reBUILD Consulting

On October 14, 2011, BendBroadband Vault received LEED NC 2009 Gold Certification with 64 points. We worked with an incredible design and construction to help guide the family-owned cable company’s new facility through the LEED certification process. The Vault currently enjoys the distinction of being one of only few LEED Gold data centers in the world.

The unique 30,000 sq ft, carbon neutral project is the creative adaptation of two existing warehouse buildings. BendBroadband Vault has certainly raised the bar in both energy efficient design for data centers, as well as the adaptive reuse potential for high-tech building design.

Notable environmental savings include:

  • Power Use Efficiency (PUE) ratio of less than 1.2 (most data centers run at a ratio of 2.0+), resulting in an 80% reduction in power needed for non-computing functions to operate the data center.
  • 35% reduction in cooling loads & 62% reduction in interior fan power
  • A 624-panel solar array offsets 16% of the energy needs of the fully-loaded data center during peak daylight
  • 100% exterior water use reduction through xeriscaping and using natural and adapted vegetation
  • 3% of the building’s power comes from on-site energy generation and any remaining energy comes entirely from renewable sources.
  • Over 95% of the waste generated during construction was recycled and diverted from landfills.

The project was also recently awarded the Uptime Institute Tier III Certification, a distinction that recognizes excellence in data center design and construction. The facility utilizes the efficiency of the Dutch Kyoto Cooling system, making it the biggest Kyoto Cooling project in North America and the first to achieve Tier III Certification.

Highlights of the project’s LEED credits include:


  • Alternative Transportation - Bend Broadband has reduced pollution and land development impacts from automobile use by providing preferred parking for employees and guests who use bikes, low-emitting vehicles and carpool strategies when commuting to the data center.
  • Natural Site Development - The project’s landscape plan has maximized open space by conserving natural areas to promote biodiversity and natural water infiltration.
  • Stormwater Management - The project has reduced of the rate/quantity of the stormwater so that post development runoff does not exceed predevelopment runoff levels. Additionally, by utilizing bioswales, pervious pavement, vegetative filters and catch basins, the stormwater quality has been significantly improved by removing 94% of the total suspended soils.



  • Water-efficient landscaping - Bend Broadband has implemented innovative strategies for landscaping and irrigation. This landscaping strategy, known as xeriscaping, eliminates the need for supplemental water for irrigation on site by installing plants that are native to the area and therefore can survive on naturally occurring rainfall. 100% of the landscaping installed on the site is considered xeriscaping, which does not require mechanical irrigation results in 100% reduction in water use over traditional landscaping practices.
  • Water-efficient plumbing fixtures - Bend Broadband Vault has installed new, efficient flush and flow fixtures to reduce water usage compared to existing code fixtures and thus the burden on municipal water supply and wastewater systems. 31% reduction of water use savings comes from flush fixture (low-flow toilets and urinals) and 55% water savings from flow fixtures (bathroom and kitchen faucets).
  • Water-efficient cooling systems - In addition, though not included in the LEED calculation, is water savings from the project’s process water. The KyotoCooling systems for the data center does not rely on traditional chilled water systems therefore, the project significantly reduces the amount of process water used compared to typical data center cooling systems.


  • Optimize Energy Performance - Bend Broadband Vault is one of the most energy efficient data centers in the United States. The results of the project’s energy model show a projected 20% total energy savings (by cost) as compared to a similar code compliant data center. The main conservation measure on this project was the KyotoCooling air conditioner, considered one of the highest quality energy optimized cooling solutions for data centers and is one of the few currently installed in the US. Through this and other strategies, the project was able to reduce its cooling load by 35%, interior fan power by 62% and equipment loads by 5% energy savings as compared to a baseline case.
  • Onsite Renewable - A 152.9 kW photovoltaic array (PV) is installed on 15,000 sf of the south facing roof and generates 3% of the building’s total energy power, thus reducing the demand on the power grid.
  • Green Power - Bend Broadband has made a commitment to purchase 100% of its power (that is not supplied by the PV panels) from renewable sources provided by Pacific Power’s Blue Skye Green-e Energy program.



  • Building Reuse - The Bend Broadband Vault project has chosen an existing site so as to reduce the environmental impact from its location on the surrounding context. In doing so, Bend Broadband has extended the life cycle of existing building stock by reusing 95% of the walls, floors and roof of the existing building on site.
  • Recycling of Construction and Demolition Waste - Over 95% of the waste generated during the construction and demolition process was diverted from landfills. These recovered resources, which included all of the concrete, steel, gypsum, cardboard and paper on the project, were either recycled or sent to salvage companies for reuse.
  • High-Recycled Content and Locally Sourced Materials - Over 27% of the construction materials purchased for the project came from recycled sources. Materials with recycled content included: concrete, steel framing, ceiling tiles, insulation, and carpet, among others. Nearly 30% of the materials were also locally-sourced, meaning they were extracted or harvested and manufactured within 500 miles of the project site. The majority of the concrete mix, tile, gypsum board and masonry units were sourced regionally. Using local materials, the project avoided the high environmental costs attributed to extracting virgin materials and transporting them from to and from manufacturing locations to the project site.
  • Certified Wood - In order to encourage environmentally responsible forest management, 100% of the project’s new wood was purchased from sustainable sources with a Forest Stewardship Council Certification.



  • Low-emitting building Materials - All of the adhesives, sealants, paints and coatings contain either zero-or-low VOC content. VOCs are volatile organic compounds which off gas at room temperature and can be odorous, irritating, and harmful to the residents’ health and well-being.
  • Indoor Air Quality (IAQ) Management - The project construction team followed a comprehensive Construction IAQ Management plan to ensure the site was clean and the materials and air ducts were not contaminated with dust, mold or pollutants during construction. Prior to occupancy, the space was entirely flushed out with fresh outdoor air – further ensuring a pollutant and dust free living space for the future residents.
  • Green Cleaning - Bend Broadband’s janitorial service employs a green housekeeping policy, requiring only non-toxic or low-toxic products and cleaning practices in the common areas of the building. The purpose of this Green Cleaning Policy is to reduce the exposure of building occupants and maintenance personnel to potentially hazardous chemical, biological, and particulate contaminants, which adversely affect air quality, human health, building finishes and systems, and the environment.



  • Bend Broadband achieved an innovative pilot credit because of the project team’s integrative project planning approach. Using cross-discipline design and decision making from beginning in the project, they were able to maximize opportunities for integrative, cost-effective adoption of green design and construction strategies.
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