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Energy and Environment Directorate

Cheryn Metzger

Cheryn Metzger

(503) 227-3099


Cheryn Metzger has worked at PNNL since 2014. Mrs. Metzger primarily supports the Department of Energy's (DOE) Building Technologies Office and focuses on large scale energy efficiency programs in residential and commercial buildings.

Prior to joining PNNL, Mrs. Metzger worked for NREL as an engineer and research coordinator for the Building America Program. In addition to overseeing dozens of projects related to minimizing the risks of highly energy efficient buildings, Cheryn specialized in developing simulation and field test protocols for a wide range of stakeholders. Mrs. Metzger has also supported a variety of efforts related to translating fundamental research results into information suited for general audiences. She has enjoyed organizing market transformation efforts such as outreach programs, website development and multi-track technical conferences.

Research Interests

  • Energy Efficiency Program Design and Implementation
  • End-user Focused Program Management
  • Whole Building Performance Measurement
  • National Scale Simulation and Field Protocols

Education and Credentials

  • M.S. Mechanical Engineering, University of Washington
  • B.S. Mechanical Engineering, University of San Diego
  • B.A. Liberal Arts, University of San Diego
  • Professional Engineer (PE)
  • Leadership in Energy & Environmental Design Accredited Professional (LEED AP)
  • Project Management Professional (PMP)

PNNL Publications


  • Butzbaugh J.B., E.T. Mayhorn, T.D. Ashley, C.E. Metzger, K.E. Fenaughty, and D. Parker. 2022. "Field Study of Grid-connected Heat Pump Water Heaters in the Southeast U.S.: The Next Right Thing." In 2022 ACEEE Summer Study on Energy Efficiency in Buildings: Climate Solutions: Efficiency, Equity and Decarbonization, August 21-26, 2022, Monterey, CA, 12-292 - 12-307. Washington, Dc:American Council for an Energy Efficiency Economy. PNNL-SA-171512.


  • Manasseh O., C.E. Metzger, E.T. Mayhorn, T.D. Ashley, and W.E. Hunt. 2021. "Nontargeted vs. Targeted vs. Smart Load Shifting Using Heat Pump Water Heaters." Energies 14, no. 22:Art. No. 7574. PNNL-SA-156587. doi:10.3390/en14227574


  • Antonopoulos C.A., C.E. Metzger, J. Zhang, M.C. Baechler, A. Desjarlais, P. Huelman, and G. Mosiman. 2020. "Wall Upgrades for Deep Energy Savings in Residential Buildings: Interim Results from a Multi-Year Study." In 5th Residential Building Design and Construction Conference (2020), edited by Ali M. Memari and Sarah Klinetob Lowe, 55-70. University Park, Pennsylvania:Pennsylvania Housing Research Center (PHRC) at the Pennsylvania State University. PNNL-SA-147532.
  • Ganguli S., H. Nagda, C.A. Antonopoulos, J. Zhang, C.E. Metzger, and M.C. Baechler. 2020. "Scaling Deep Energy Retrofits for Residential Walls - Energy, Cost, and Economic Assessment of Five Wall Systems." In ACEEE Summer Study on Energy Efficiency in Buildings, August 17, 21, 2020. Virtual, Online, 5-129 - 5-143. Washington, District Of Columbia:American Council for an Energy-Efficient Economy. PNNL-SA-152405.
  • Lubliner M., I. Walker, C.A. Antonopoulos, C.E. Metzger, and E. Martin. 2020. "Residential Ventilation Systems." ASHRAE Journal 62, no. 3:70-74. PNNL-SA-150558.
  • Martin E., T. Khan, D. Chasar, J. Sonne, S.I. Rosenberg, C.A. Antonopoulos, and C.E. Metzger, et al. 2020. "Characterization of Mechanical Ventilation Systems in New US Homes: What types of systems are out there and are they functioning as intended?." In ACEEE Summer Study on Energy Efficiency in Buildings, August 17-21, 2020, Virtual, 8-165 - 8-180. Washington, District Of Columbia:American Council for an Energy-Efficient Economy. PNNL-SA-152373.


  • Cort K.A., J.A. McIntosh, C.E. Metzger, T.D. Ashley, and G.P. Sullivan. 2018. "Completing the Connected Home with Smart Window Shades." In ACEEE Summer Study on Energy Efficiency in Buildings, August 12-17, 2018, Pacific Grove, CA, 12-1 - 12-12. Washington, District Of Columbia:American Council for an Energy-Efficient Economy. PNNL-SA-135343.
  • Metzger C.E., J. Zhang, J. Winkler and J. Maguire. 2018. "Are Ducted Mini-Splits Worth It?." ASHRAE Journal 60, no. 2:22-31. PNNL-26834.
  • Metzger C.E., S. Rashkin, and A.W. Wagner. 2018. "At the Core: Fundamental Building Science Education Matters More Than Building Type." In 4th Residential Building Design Construction Conference, February 28-March 1, 2018, State College, PA, edited by AM Memari and SK Lowe, 96-102. State College, Pennsylvania:Pennsylvania Housing Research Center (PHRC). PNNL-SA-129292.

Energy and Environment

Core Research Areas