Our Team

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Jennifer L. Chiodo, P.E., LEED AP BD+C — Managing Principal

Jennifer L. ChiodoMs. Chiodo became a principal of Cx Associates in January 2005. She brings her skills in management and planning to the growing organization while applying her knowledge of energy efficient building design, lighting systems, facilitation and measurement and verification to her projects. Ms. Chiodo provides collaborative consultation for the design and delivery of high performance buildings to organizations committed to developing buildings with a positive impact on occupants, the community and the environment.

Ms. Chiodo’s experience includes ten years of project management and systems design for commercial and institutional projects at two major M&E firms in San Francisco, project management of successful energy performance contracting projects and the management and development of Efficiency Vermont’s Business Energy Services group from its inception, commissioning of over 2 million square feet of commercial facilities, energy efficiency program savings verification for the ISO NE Forward Capacity Market and program evaluation for NYSERDA’s Large Savers and Commercial New Construction Programs. Ms. Chiodo is a licensed electrical engineer and a LEED Accredited Professional.
Contact: jennifer [at] cx-associates [dot com] | LinkedIn

Matthew Napolitan, P.E., CCP, CPMP, LEED AP BD+C — Principal

Matt Napolitan is a mechanical engineer with nearly 20 years of experience in energy efficient building design andMatthew Napolitan operations. His commissioning experience ranges from major renovations, new construction, and retrocommissioning of commercial and industrial, educational, health care, and military facilities. He has been the lead commissioning engineer for several completed and ongoing projects including Champlain College's LEED Platinum-certified Perry Hall, the University of Vermont's LEED Gold Certified Student Center, Dealer.com's Burlington headquarters, and Hypertherm's 150,000 square foot facility in Hanover, NH. Mr. Napolitan has extensive expertise in HVAC system efficiency and DDC controls optimization, as well as experience delivering meaningful, permanent measurement and verification systems. Mr. Napolitan has been the mechanical design engineer and project manager on nearly $1 billion worth of construction. Prior to joining Cx Associates he was the project manager for mechanical engineering design on several major projects, including the New York Times' headquarters in Manhattan.

Contact: matt [at] cx-associates [dot com] | Linkedin

Eveline Killian, CEM — Associate PrincipalEveline Killian

Eveline Killian has 20 years' experience in Commercial and Industrial Project Management and 10 years' experience as an Energy Analyst. As a project manager, Ms. Killian has worked closely with design firms, building owners and contractors to ensure a smooth and timely project flow. Her project management experience includes large industrial cleanroom new construction projects, pharmaceutical facilities new construction and major retrofit, commercial new construction, and energy efficiency performance contracting. Ms. Killian also has extensive experience in energy efficient building design and operation, efficiency program design and implementation, and measurement and verification of energy efficiency measures. She is a Certified Energy Manager and is experienced in mechanical and compressed air system efficiency and DDC control optimization.

Contact: eveline [at] cx-associates [dot com] | LinkedIn

Rick Stehmeyer - Senior Engineer

Rick Stehmeyer

Rick Stehmeyer is an expert in building system controls programming and has extensive experience with many different control systems, systems integrations, and energy management systems. Rick has the keen ability to find ways to optimize building systems for increased efficiency through controls programming and has successfully performed analyses of algorithms implemented by controls contractors. His analysis has allowed the further optimization of the energy efficiency of controls systems during commissioning. Prior to his work at Cx Associates, Rick spent over a decade working at Control Technologies, Inc. where he started as an Intern, working his way up to Technical Services Manager.

Contact: rick [at] cx-associates [dot com] | LinkedIn


Ben Fowler, P.E., QCxP — Senior EngineerBen Fowler

Ben Fowler is a mechanical engineer with a diverse background—from hardware design and project management to facilities management. Most recently, Mr. Fowler consulted on a proposed anaerobic-digester cogeneration plant at a Vermont state college campus. Previously, Mr. Fowler worked for GreenFuel Technologies, an MIT spin-off company, where he designed systems to support algae-based biofuel production, traveled to commercial power plant sites across the country, and was named co-inventor on several algae photobioreactor provisional patents. Mr. Fowler also brings facilities expertise from his half-decade at the Star Island Conference Center, where, among other projects, he oversaw energy efficiency upgrades and the installation of a desalination plant.

Contact: ben [at] cx-associates [dot com] | LinkedIn


Katherine Mason, EI, LEED AP O+M — EngineerKatherine Mason

Katie Mason joined Cx Associates in 2012. Katie consults as a project manager with the University of Vermont Medical Center's Facilities and Maintenance Department, and adeptly manages a diverse portfolio of complex mechanical and electrical upgrade projects for the hospital. She also has a broad knowledge of the LEED certification process for new construction, interior renovations and existing buildings, and is proficient at building commissioning, retro-commissioning and energy audits.

Katie graduated from the University of Vermont where she earned a Bachelor of Science degree in Environmental Engineering. Prior to Cx Associates, she worked in Construction Management.

She is a certified Engineer Intern and is working to achieve her Professional Engineer License.

Contact: katie [at] cx-associates [dot com] | LinkedIn

Walker Calderwood — EngineerWalker Calderwood

Walker Calderwood is a mechanical engineer who joined Cx Associates in June 2014. Walker is a 2012 graduate of the Rochester Institute of Technology (MS Manufacturing and Mechanical Systems Integration and BS in Electrical/Mechanical Engineering Technology). Walker has experience performing measurement and verification (M&V), building commissioning, retro-commissioning, and energy analysis.

Before joining Cx Associates, Walker specified equipment and assisted with mechanical design as a sales engineer for Meier Supply Company representing Mitsubishi Electric. His experience also includes working on early phase development of a prototype design for a new multi-function, behind-the-counter photo kiosk for the Eastman Kodak Company.

Contact: walker [at] cx-associates [dot com] | LinkedIn

Gretchen Schimelpfenig, P.E., LEED Green Associate – Engineer_E_©Jeff Clarke-0107 - WEB.jpg

Gretchen Schimelpfenig is an architectural engineer focused on delivering superior energy efficiency in buildings. She has held multiple research fellowships, and has published research on renewable energy, green building design, and sustainable construction. Throughout her academic career, she has acquired expertise in building energy modeling, building systems design & construction, energy efficiency measures, and commissioning. 

Gretchen is a registered Professional Engineer (P.E.) and a LEED Green Associate. She earned an M.S. in Civil and Environmental Engineering, Sustainable Design & Construction – Energy from Stanford University, and a B.S. in Architectural Engineering (structural) from the University of Wyoming. 

Gretchen has consulting and project management experience from her work on Pacific Gas & Electric’s transmission line portfolio, including the California High Speed Rail and Caltrain Electrification programs. As a project controls analyst, she managed infrastructure construction projects ranging in size from $100k to $1B. Gretchen also served as a Schneider Fellow at the U.S. Green Building Council in Washington, DC.

Contact: gretchen [at] cx-associates [dot com] | LinkedIn

Daniel Tuhus-Dubrow, LEED AP BD+C O+M, BEMP, EIT - Engineer _E_©Jeff Clarke-0170 - WEB.jpg

Daniel Tuhus-Dubrow is a mechanical engineer focused on improving energy efficiency and reducing energy costs in buildings. He has performed energy auditing and retro-commissioning activities for over 20 projects, including several for Local Law 87 (New York City) and Executive Order 88 (New York State) compliance. He has experience with LEED certification, energy modeling and energy efficiency design and measure implementation verification.

Prior to joining Cx Associates, Daniel worked as an energy engineer at an energy management and demand response firm in Boston, MA, where he was involved with many energy efficiency projects across different sectors, including university, municipal, office and industrial.

Daniel earned a B.S. in Mechanical Engineering from Brown University and an M.S. in Civil Engineering at the University of Colorado's Building Systems program.

Contact: daniel [at] cx-associates [dot com] | LinkedIn

Rachael B. Straub - Project Coordinator_E_©Jeff Clarke-0209 - WEB.jpg

Rachael Straub brings a background in project management, qualitative and quantitative research, and climate change research to her work at Cx Associates. Rachael assists with measurement and verification project coordination, energy metering and analysis, LEED certification administration and preparing commissioning documents. 

Rachael earned an M.S. in Natural Resource Management as well as a B.S. in Environmental Studies from the University of Vermont. 

Prior to joining Cx Associates, Rachael managed multiple quality improvement projects focusing on the provision of children’s health care. For her master’s degree, she studied ecological economics, policy responses to climate change, and qualitative research. Her thesis and subsequent grant work focused on state efforts to help small-scale forest landowners participate in carbon offset markets. She’s a published author in both grey and academic literature.

Contact: rachael [at] cx-associates [dot com] | LinkedIn

Eric Hauser — Operations Manager

Eric Hauser joined Cx Associates in 2009 as the Operations Manager. After nearly a decade of experience in the non-profit sector, Eric brings a wealth of development and operations management experience to Cx a-¬ Jeff Clarke_121514-0172-1.jpgAssociates.

Before making the move from New York City to Vermont in 2009, Eric served as the Director of Operations and Development Associate during his four years at the non-profit, Common Good. Before that he held various development positions at other non-profits such as Partnership with Children, Society & Animals Forum, and the Public Broadcasting Service.

In 2014, Eric and his wife relocated to Chicago from Vermont. Eric continues to work remotely as Cx Associates' Ops. Manager.


Contact: eric [at] cx-associates [dot com] | LinkedIn