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Energy Group

The Energy Efficiency division of Nova assists real estate investors in evaluating the efficiency of their asset and reducing utility expenses. Drawing on extensive experience in real estate development and energy consulting, the energy team specializes in translating the energy performance of buildings into financial terms. This analysis gives our clients greater control of their utility expenses, helping to reduce financial risk in an unpredictable energy market. Nova offers almost a decade of experience in the energy efficiency field. We provide custom energy audit reports that include site-specific solutions based on dialogue with clients and actual historic performance. We are able to meet tight delivery timelines that fit within the due diligence period for lenders.

Keely Felton, CMVP | VP, Energy Efficiency Group

Ms. Felton oversees all Freddie and Fannie green loan reports and other deliverables completed by Nova Consulting Group’s Energy Efficiency Division. In this capacity, she reviews High-Performance Building reports and Green Assessment reports for these programs while working closely with Nova’s clients to make sure that all pertinent information is communicated throughout the process. Keely is a Certified Measurement and Verification Professional. She is highly experienced with utility data analysis, including Portfolio Manager and benchmarking.


Margo Billings, BPI-MF | Technical Team Leader and Senior Project Manager, Energy Division

Ms. Billings is the Technical Team Leader and Senior Project Manager for Nova’s energy division. Margo is a BPI-certified energy auditor with nine years of experience in building energy efficiency consulting and project management. Her primary responsibilities at Nova include senior technical review of deliverables to Energy Group clients, energy and water usage modeling, and consumption analysis, training and support of field assessors and technical reviewers and  QA/QC of all aspects of project management.


Chris Kessler, BPI-MF | Senior Project Manager

Mr. Kessler has over seven years of experience as a BPI-certified energy auditor with a diverse background in weatherization, HVAC design, solar PV design, and energy modeling. His work includes the Department of Energy Weatherization Assistance Program and General Manager of Rook Energy, a home performance company in southern Maine focusing on building performance at single and multi-family residential properties, small commercial properties, and religious institutions.  Chris is based out of the Portland, Maine office as part of Strategic Energy Group.


David “Jay” Hrivnatz, RA, CEA™, LEED AP BD+C, CEM® | Senior Project Manager and Technical Reviewer

Mr. Hrivnatz brings with him over 13 years of professional experience in conducting property condition evaluations and authoring technical reports related to construction feasibility, life-cycle analysis, budgeting, energy efficiency, code compliance and accessibility. In addition to being a licensed architect in the State of Texas and a LEED Accredited Professional (Building Design and Construction), Jay is also a Certified Energy Auditor and Certified Environmental Manager with the Association of Energy Engineers.