Oakland, CA

Integral Group’s Oakland Design Studio has rapidly grown to over 100 people due in part to the growing need for sustainable design. With an existing cultural norm where locally sourced food and organic living is customary, Oakland staff are familiarizing themselves with spaces that are self-sustaining – using environmentally-friendly products and incorporating nature’s tools in their designs. Serving the West Coast and beyond, the Oakland office prides itself on its culture and passion for deep green engineering.

The Oakland Studio uses 37% less energy than a typical U.S. office building of its size as compared to California’s Title 24 Energy Efficiency Code. The office redesigned earned a LEED Platinum rating (CI 2009) with 102 out of a possible 110 points, which at this time is the world’s highest score.

Oakland Design Studio

427 13th Street
Oakland, CA 94612
(510) 663-2070
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News & Events for Oakland, CA

Congrats to our @SFAIofficial Fort Mason Pier 2 Grad Center, @nuevaschoolBay Meadows Campus & @LinkedIn #ZNE Offices 880 Maude project teams! All 3 were awarded first place @ashraenews Golden Gate Chapter Technology Awards! Read more in our company news: goo.gl/6igLrc

Oakland, CA Leadership

  • Eric Solrain
    US West Engineering Design Leader, Oakland, CA

    Eric Solrain is an innovative, collaborative and goal-oriented mechanical engineer responsible for the procurement, management, and design of building engineering system projects. With a focus on architectural and social significance, sustainable and efficient systems, and cost- and maintenance-conscious designs, Eric brings a calm and reliable creativity to the art of engineering the built environment.

    Eric has led several significant projects, including the first LEED Platinum certified retrofit of a historical laboratory building for the Linde+Robinson Lab at Caltech, the most energy efficient data center in North America with a PUE of 1.05 for the Energy Systems Integration Facility at the National Renewable Energy Lab, and the net zero energy headquarters building for the Packard Foundation. Eric has managed projects for such clients as: Lawrence Berkeley National Lab, National Renewable Energy Lab, National Institute of Standards and Technology and various University of California campuses as well as numerous high tech companies around the Bay Area.

  • Andréa Traber
    US West Sustainability + Resilient Design Leader, Oakland, CA

    Andréa contributes over 20 years of experience as Project Architect and Principal on numerous green building projects, climate action plans, as well as sustainability and energy programs, to the Integral team. Throughout her career, Andréa has dedicated herself as a leader with several green building and sustainability organizations, including the USGBC Northern California Chapter. Andréa served three terms on the Board of Directors, with three years as President, and is currently serving on the Strategic Advisory Board of the Healthy Communities Initiative. Most recently, she co-chaired the host committee for Greenbuild 2012, and the Regionalization Committee for LEED v4. She is a sought after speaker on such topics as zero net energy design, sustainable communities, and green building.   In 2013, Andréa was invited by former Vice-President, Al Gore to attend a Climate Reality Leadership Corps Training, where she was named a “Climate Leader.” Through this initiative, Andréa is educating communities about climate change and building local networks of climate activists, who work in their own communities and countries demanding solutions.


  • Joseph Wenisch
    Principal, Oakland, CA

    Joseph brings over a decade of energy efficiency and renewable energy engineering experience to the Integral team. He has managed four LEED Platinum projects while at Integral Group, including the Exploratorium, a 200,000 square foot net zero energy children’s science museum on the San Francisco waterfront.  He has a B.Sc. in Mechanical Engineering from MIT and a M.Sc. in Civil Engineering from the Building Systems Program at the University of Colorado Boulder. He has held full-time positions at the National Renewable Energy Lab and at GE Wind Energy, and spent ten months teaching renewable energy and energy efficiency software as a visiting instructor in Nepal. Before this, Joseph worked for three years as a mechanical engineer at GE Transportation Systems, where he was a graduate of both GE’s Technical Leadership Program and their Six Sigma quality program.

  • John McDonald
    Principal, Oakland, CA

    With over two decades of engineering experience, John is widely recognized as one of the nation’s leading green mechanical engineers for laboratories and animal facilities. He has managed and designed new and renovation projects for a variety of building types including universities, R&D bio-pharmaceutical and government institutions. John’s project management experience includes master planning, conceptual design through construction documents, construction administration, and commissioning. He strives to achieve creative designs that optimize energy efficiency within a project budget.

  • Neil Bulger
    Principal, Oakland CA

    Neil leads the building performance engineering team for Integral Group’s west coast offices. He provides design strategies for thermal comfort and low energy systems in buildings, leveraging world class energy & analysis simulation tools and years of experience in building science and HVAC.

    Neil provides design consulting support that goes back to the basics in using simulated models and focusing on illustrative options, while always asking how a design feature provides true value to the people experiencing a proposed environment. Relying on expertise in thermal comfort, daylighting, systems design, and energy, Neil and his team deploy models to validate designer-driven ideas and test designer posed questions.

    Neil provides technical design support on net zero energy projects, all facets of energy and comfort regarding LEED certification, and submission and documentation of code compliance and utility incentives. Using research-grade simulation tools, such as EnergyPlus and Radiance, along with best-in-class digital environments like Rhinoceros and Autodesk’s Revit, his team builds on years of design and analysis experience to align high performance tools with key design solutions and questions. They are active users of a multitude of energy modeling tools, including VE-IES, OpenStudio, EnergyPlus, Trnsys, Trace, and eQuest.

  • Ray Juachon
    Principal, Oakland CA

    Ray brings over twelve years of experience to Integral Group. He has worked on a wide array of projects including healthcare, educational, multi-residential, industrial and commercial facilities. He is experienced in designing power distribution systems, lighting, lighting controls, daylighting controls, telephone systems, data distribution networks, CATV distribution networks, nurse-call systems, fire alarm systems, and security camera systems. He is well versed in coordination issues between the architectural, structural, mechanical and construction disciplines. This enhanced coordination has been exceedingly important when delivering a project to a client on time and within budget.