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Green Buildings Solutions: What's Working? Post Occupancy Evaluation


for Members

Green Buildings Solutions: What's Working? Post Occupancy Evaluation

Thursday, April 15, 2010

The New York Academy of Sciences

Presented By


Green Buildings begin with a well defined “design intent,” usually including a goal for significantly reduced energy consumption compared to standard practice. Too often, though, there is less attention paid to performance after construction is completed and the building is occupied.

Post Occupancy Evaluation (POE) has been evolving as a science in Europe, and is gaining traction in the US. Different levels of POE seek to understand post occupancy building performance, including energy performance and other aspects of occupant satisfaction.

This session of the Green Buildings Discussion Group will highlight the progress made in establishing POE criteria in Germany, and show performance data from several buildings in New York City, including the Hearst Tower, Four Times Square and The Helena.

This program qualifies for two professional development hours (PDHs) for Professional Engineers or two learning units (LUs) for Licensed Architects under sponsorship of New York Institute of Technology (NYIT) . To receive these credits, obtain the supplemental registration form at the meeting and submit to NYIT along with a $50 registration fee.


Measurement, verification and more – the next steps towards green buildings
Stefan Plesser, Technical University of Braunschweig

Energy Performance in a NYC Real Estate Portfolio
Don Winston, PE, Durst Organization

Meeting the Mark: Achieving Anticipated Performance Goals
Brian Schwagerl, Hearst Corporation

Panel Discussion
Moderator: Adam Hinge, Sustainable Energy Partnerships

Networking Reception



This event is the third in a four-part series Green Building Solutions: What’s Working? The series will showcase current green building technologies, demonstrate case studies of building design and construction incorporating these technologies and examine the lessons learned in the process. Technologies to be covered in the series will include energy efficiency measures, renewable energy generation, water efficiency and reuse, waste reduction, the use of environmentally responsible materials and integrated design processes.

Other events in this series include:

Considering the Brains Behind a Smart Building, Thursday, October 15, 2009 | 6:00 PM - 8:00 PM

Achieving Energy Efficiency with Simple Technologies, Wednesday, January 27, 2010 | 6:00 PM - 8:00 PM

A Business Case for Sustainability, Thursday, June 3, 2010 | 6:00 PM - 8:00 PM (date tentative)



Craig Kneeland



Stefan Plesser

Technical University Braunschweig

Dipl.-Ing. Architect Stefan Plessar is currently the Head of the Energy Efficient Non-Residential Buildings Group in the Institute for Energy Design and Building Services (IGS) at Technical University, Braunschweig. This group is now heading a new national R&D program on Commissioning, Measurement and Verification of the German Ministry of Economics and Technology. Other R&D projects Mr. Plessar has worked on at IGS include the “Energy-Navigator”, a software platform for commissioning and quality management, the “New House of the Region of Hannover” demonstration building, and “EVA – Evaluation of Energy Concepts for Office Buildings”. His recent conference involvement includes service as the Associate Director of the International Conference for Enhanced Buildings Operations (2008), and as the Scientific Coordinator for the International Conference on Building Performance, Ministry of Economics and Technology (September 2010). Mr. Plessar holds a Diplom-Ingenieur (Masters) of Architecture from the Technical University, Braunschweig.

Brian Schwagerl

Hearst Corporation

Don Winston

Durst Organization

Donald J. Winston, PE is Vice President, Technical Services at The Durst Organization where he oversees the installation and evaluation of sustainable energy, water and indoor environmental quality for 11 million square feet of Class “A” commercial and high-end residential buildings. During his tenure at The Durst Organization, Mr. Winston has managed the conceptualization, design, installation, operation and evaluation of various energy saving technologies. Before joining The Durst Organization, Mr. Winston had more than 20-years experience in the engineering industry as an independent contractor, project manager and commissioning agent, including experience as the commissioning agent for 4 Times Square and multiple large scale installations of HVAC and MEP systems as Vice-President of A.D. Winston Corp. Mechanical Contractors, Facilities Resource Management Company and Donald J. Winston, PE Mechanical Solutions.

Mr. Winston holds a B.S. in Mechanical Engineering from Rensselaer Polytechnic Institute and is a licensed New York State Professional Engineer. He is a member of several engineering organizations, and Engineers and serves on the Editorial Advisory board of “High Performing Buildings” magazine, the New York City Department of Building’s (DOB) Mechanical Code Committee, the DOB’s Buildings Sustainability Board, the ASHRAE Building Performance Metrics Steering Committee.

Panel Moderator

Adam Hinge

Sustainable Energy Partnerships

Adam Hinge, PE, manages Sustainable Energy Partnerships, a small consulting firm specializing in energy efficiency program and policy issues. Hinge is involved with a variety of efforts working toward improving building energy performance around the U.S. and globally. He is active in several relevant professional organizations, including the American Society of Heating, Refrigerating & Air-Conditioning Engineers, and serves on the Board of Directors of the Institute for Market Transformation. Hinge has degrees in Mechanical Engineering from Rensselaer Polytechnic Institute, is a registered Professional Engineer in New York, and serves as an Adjunct Research Scholar for Columbia University’s Center for Energy, Marine Transportation and Public Policy, a policy research center that is part of School of International and Public Affairs.

*Additonal Speaker biographies coming soon.


For sponsorship opportunities please contact Heidi Perry at or 212.298.8648.

Platinum Sponsors


Measurement, verification and more – the next steps towards green buildings

Stefan Plesser, Technical University of Braunschweig

Germany has already gone a long way towards green buildings. New building codes in the 1970’s defined standards for insulation of walls and windows, improving the quality of building facades. In the 1990’s, mandatory codes required the calculation of the primary energy demand for heating for each new building and major retrofit. As a result, an integrated design approach for facades and heating systems was widely accepted. And since 2007, a new standard is now in use for comprehensive energy balances that includes heating, cooling, ventilation, and lighting. As a consequence, all building services and other factors including appliances, user behavior, and operation schedules, are also part of the bill. The strategy has been successful: energy consumption of buildings has been reduced by 40% to 75% over the last 30 years.

But now new challenges are ahead. Integrated design concepts with reduced loads, systems precisely sized to provide the necessary services, and complex control strategies to optimize operation increase the demand for higher quality in design, construction, and operation. The next steps towards green buildings therefore require sophisticated strategies to meet design targets and guarantee high performance. New tools are needed to handle and analyze operation data. With building management systems, user interfaces, web based facilities management, and the smart gird, building performance can be further improved. Measurement and verification as part of the process of commissioning, optimization and ongoing supervision will be the key to the next level of green buildings.

The author will present a brief history of strategies and current R&D programs on successful technological concepts for measurement & verification in Germany.

Energy Performance in a NYC Real Estate Portfolio

Don Winston, PE, Durst Organization

The Durst Organization is recognized as one of New York City’s premier “Green” developers. With the pioneering Conde Nast Building at Four Times Square, completed in 1999, widely regarded as the first high rise green office tower in New York, and other green buildings constructed since then, the firm has led the conceptualization, design, installation, operation and evaluation of various energy saving technologies. Advanced energy efficiency measures installed by the Durst Organization include microturbines, combined heat and power (a 4.6 MW cogeneration plant in the Bank of America Tower at One Bryant Park), photovoltaics, low energy chiller plants, ice storage, fuel cells, and underfloor air distribution. Beyond testing these technologies in the marketplace, the firm also believes it is critical to learn quickly what works, and make results public in order to educate the marketplace about true environmental performance of buildings. This presentation will highlight the measured energy performance of buildings in the Durst portfolio, including trends in performance over time.

Meeting the Mark: Achieving Anticipated Performance Goals

Brian Schwagerl, Hearst Corporation

The Hearst Tower, a 46 story glass and steel skyscraper constructed over the original 1928 Hearst International Magazine Building as its base, was designed with superior environmental performance as a key objective. It was the first building to receive a Gold LEED certified rating for core and shell and interiors in New York City on its completion in 2006. Following occupancy of the building, the first two years of energy use was higher than the potential predicted by the designer’s energy model. As part of a review of measured energy performance against design computer simulations, a variety of operational changes were identified that have significantly improved the measured energy performance. Continuing what began through the LEED Certification process, the Hearst Tower is an excellent example of outstanding environmental performance, including understanding, monitoring and achieving its environmental goals. What has been learned is that this process doesn’t stop after you commission a green building.

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