Meet the Team

Mariel (Eisenberg) Hoffman, PE

Director of Energy Engineering


M.S. in Environmental Engineering, Cornell University

B.S. in Environmental Engineering, Minor in Business, Cornell University


Licensed Professional Engineer (PE)

Certified Energy Manager (CEM)

Multifamily Building Analyst (MFBA)

Mariel is the Director of Energy Engineering. Alongside the Senior Director of Engineering, Mariel manages EN-POWER GROUP’s energy engineering team. She has overseen the completion of over 500 energy audits and also acts as project lead for the implementation of large-scale, comprehensive energy efficiency and engineering projects. As one of EN-POWER GROUP’s first employees, Mariel has played an integral role in developing and advancing the energy engineering team. She spearheads the Local Law 87 Compliance group by training and creating analytical tools and energy audit procedures.

Mariel’s background as an Environmental Engineer combined with her experience as a licensed Mechanical Engineer, puts her in an ideal position to effectively evaluate and execute sustainable, energy efficient systems in buildings. Mariel has extensive experience conducting retro-commissioning and ASHRAE Level I, II, and III audits of multifamily and commercial buildings throughout New York City. She has successfully coordinated and implemented many types of incentive programs to help bring projects to fruition, including completing over 20 projects through NYSERDA’s Multifamily Performance Program (MPP) and well over 120 NYSERDA FlexTech projects.

Mariel is the recipient of the 2019 Kate Goldstein Emerging Leader Award. This award recognizes Mariel for her contribution to the Northeast Sustainable Energy Association (NESEA) and commitment to supporting the next generation of emerging professionals in high-performance buildings.