Staff Biographies


Energy Efficiency

President Dennis Landsberg, PhD
Vice President Ron Slosberg
Senior Energy Engineers Lincoln Lam
Brendan Kelly
Yigit Guctas
Brian Martz
Michael Stiles, PhD
Energy Engineers Matt Arisohn
Paul Remington
James Hanley
Marketing/Outreach Mark DeChiro
Administration Michelle Wooddell

Name: Dennis Landsberg, Ph.D., P.E., CEM, CDSM, LEED®, ASHRAE BEAP, CP EnMS – Industrial

Title: President
UntitledDr. Landsberg has over 39 years of experience in energy efficient building technologies, building energy analysis and audits, energy consumption, demand-side management, commissioning and energy conscious building simulation and design. His building end-use metering applications include DSM impact evaluation, RD&D applications for buildings and alternate fuel vehicles and building energy simulations. Dr. Landsberg has also provided expert witness testimony with regard to performance of energy conservation systems and programs. Services included development of energy program workbooks, training seminars and demonstration projects for energy efficient technologies. Dr. Landsberg has been providing Monitoring and Verification services for his entire professional career. Projects have included utility and government R&D projects, energy conservation program R&D projects and ESCO review services.

Dr. Landsberg currently serves as Chairman of the ASHRAE Guideline 14 Project Committee, Measurement of Energy and Demand Savings. He is chairman of the ASHRAE TC7.6 subcommittee on Monitoring and Energy Performance and Secretary of TC 7.6. Dr. Landsberg is also a voting member of ASHRAE Standards Committees SPC 100 – Energy Efficiency in Existing Buildings and SPC 211 – Building Energy Audits. He was also the lead author of ASHRAE’s Energy Efficiency Guides for Existing Buildings.

Dr. Landsberg has been responsible for conducting hundreds of energy audits including preparation of work scopes, gathering data in the field, energy analysis and report preparation. The measures analyzed have included industrial process improvements, anaerobic digestion, wind, photovoltaic as well as building energy efficiency improvements. He has led numerous commissioning, retro-commissioning and LEED commissioning studies. Projects have included data centers and combined heat and power. He has also managed numerous modeling projects for new construction.


Name: Ron Slosberg, CEM, LEED®, BOMA

Title: Vice President

2Over the past twenty years, Mr. Slosberg has provided comprehensive energy efficiency, energy procurement, distributed generation, and energy management evaluation, assessment, and implementation consulting services. Mr. Slosberg has completed over one hundred comprehensive energy efficiency and technology assessment projects. He has been a principal consultant on forty energy savings performance contracts providing services such as RFP development, measurement and verification, savings guarantee review, contract negotiation, and technical review. Mr. Slosberg has provided training presentations on numerous topics including energy performance contracts and the utilization of life-cycle costs methods.


Name: Lincoln Lam, CEA, CEM, LEED®

Title: Senior Energy Engineer

3Mr. Lam has been with L&S Energy Services since its inception. He received his BS in Electrical Engineering from Rensselaer Polytechnic Institute and holds active registrations with the Association of Energy Engineers, USGBC and is a LEED Accredited Professional.

Lincoln has experience performing energy audits and surveys of residential, commercial, industrial and institutional buildings. He has performed energy analysis using spreadsheets, DOE-2 and eQUEST computer programs.


Name: Brendan Kelly, CEM, LEED®

Title: Senior Energy Engineer

4Brendan received his AAS in Air Conditioning Engineering Technology from Canton College of Technology and his BS in Mechanical Engineering from SUNY Utica Institute of Technology. He has been with L&S Energy Services since its inception.

Brendan is experienced in performing and directing energy audits and surveys of multifamily, commercial, industrial and institutional buildings. He is skilled in the area of building simulation modeling, data acquisition systems, monitoring equipment installation, data analysis and end use energy conservation measure analysis. He has managed many technical assistance and evaluation projects for small commercial, municipal, large commercial and industrial clients for both existing buildings and new construction projects.

Additional certifications include NYSERDA’s Hydronics for High Efficiency Biomass Boilers and ICC Commercial Energy Inspector.


Name: Yigit Guctas, CEM, CDSM, DGCP

Title: Senior Energy Engineer

5Mr. Guctas received his BS in Chemical Engineering from Istanbul Technical University. He joined L&S Energy Services in 2009 as a Senior Energy Engineer. Mr. Guctas has over 13 years of experience in performing, leading, and managing energy assessments for multifamily, commercial, industrial and institutional buildings. He is experienced in analyzing building energy consumption characteristics and provides technical assistance to facilities implementing energy efficiency measures.

Mr. Guctas is a subject matter expert for the Technical Guidelines for Multifamily Building Energy Audits, under development by US Department of Energy and Oak Ridge National Laboratory. He has provided training in multifamily residential and commercial energy auditing, technical evaluation of energy efficiency opportunities, utility analysis and computer modeling.


Name: Brian Martz, CEM, CMVP

Title: Senior Energy Engineer

6Brian joined L&S Energy Services in the spring of 2012. He received his MBA from Sage Graduate School and his BS in Energy Engineering Technology from RIT. He has been involved in the energy management field for over twenty-five years, serving the small commercial, educational, municipal and industrial markets. Brian has broad-based experience in consultation, system design, account management, energy savings feasibility, technical assistance, energy system commissioning, energy auditing and energy savings performance measurement and verification. He has worked as a design engineer, utility company energy utilization specialist, development/energy engineer, energy performance assurance engineer and technical reviewer.


Name: Michael R. Stiles, Ph.D., CEM

Title: Senior Energy Engineer

7Dr. Stiles has worked with energy-efficient technologies for 25 years. His fields of expertise include building science, renewable energy systems, solar optics and intellectual property development. He joined L&S Energy Services in October, 2013.

Mike’s building science activities began with projects sponsored by the US Department of Energy, the NYS Energy Research and Development Authority, the Electric Power Research Institute and other organizations. During this time, he participated in nationally-based R&D and technology transfer in the areas of weatherization, building monitoring and simulations, convective pathway analysis, residential appliances, indoor air quality, statistical measurement and verification techniques and energy auditing. A significant part of these efforts was spent in the field working with practitioners at the cutting edge of expertise. He has conducted training in several of these areas, published extensively and periodically gives professional presentations.

Dr. Stiles has extensive experience in solar technologies and daylighting. He holds three US patents in these fields. His latest interest is the development and deployment of extremely efficient greenhouses.

Mike’s current work at L&S Energy Services include peer review of energy audit reports for NYSERDA, building systems analysis, statistical analysis of energy projects and energy audits. He is certified in NYSERDA’s high-efficiency biomass boilers program.


Name: Matt Arisohn, CEA, CEM

Title: Energy Engineer

8Mr. Arisohn has been with L&S Energy Services since the fall of 2010. He received his BS in Bioengineering from Binghamton University and his ME in Energy Systems Engineering from Lehigh University. He is an active member of the Association of Energy Engineers.

Matt provides energy auditing, energy savings analysis, measurement and verification and commissioning support to a wide range of projects. His experience spans many building sectors including institutional, municipal, industrial, commercial and multi-family.

Matt currently conducts ASHRAE Level I Audits, ASHRAE Level II Audits, Data Center Efficiency Analysis and Existing Facility Energy Savings Analysis and Verification.



Name: Paul Remington, CEM

Title: Energy Analyst

11Mr. Remington has been in the energy field since 1981 and with L&S Energy Services since its inception. He received his AAS in Construction Technology from Hudson Valley Community College and is an active member of the Association of Energy Engineers and ASHRAE.

Mr. Remington is experienced in performing and directing energy audits and surveys of residential, commercial, industrial, institutional and agricultural buildings. He is skilled in data acquisition systems, monitoring equipment installation, data analysis and end use energy conservation measure analysis. He has personally performed over 1,000 energy audit surveys.


Name: James Hanley

Title: Energy Engineer/Analyst

11Mr. Hanley has been with L&S since summer of 2015. He received his AAS in Engineering Technology from Hudson Valley Community College.
James assists the engineers at L&S with energy and utility analyses, auditing, and new construction projects. His experience also includes peer reviewing energy audits, writing technical assistance reports, and assisting in scoping studies/surveys.


Name: Mark DeChiro

Title: Technical, Marketing Outreach Coordinator and Energy Assessor

12Mr. DeChiro joined L&S Energy Services in the summer of 2012 to assist with marketing efforts as well as to conduct energy assessments. He is an experienced outreach, marketing and technical professional with 30 years of service in the energy efficiency and conservation industry with specialized emphasis on program energy management, energy auditing and direct communications to the residential, commercial and industrial markets. Mr. DeChiro also has extensive coalition building experience with the private sector, community based organizations, trade associations, local government and state agencies.


Name: Michelle Wooddell

Title: Project Administrator

Ms. Wooddell has been with L&S Energy Services since its inception. She received her BA in Political Science from Fordham University. She has many years of experience in project administration/management, information technology and customer service.

Ms. Wooddell manages the Small Commercial Energy Efficiency Program for NYSERDA’s Region 2. She also coordinates the annual NYC LL84 Benchmarking of approximately 125 multifamily buildings in New York City. She assists with proposals and marketing/outreach activities and provides administrative support for the entire staff of L&S Energy Services.


Contact L & S Energy Services

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