Kim Reitterer President, PE, LEED AP BD+C

Ms. Reitterer is the founder and majority owner of Elm Engineering, Inc. She has over 30 years of experience designing, commissioning, and auditing energy-efficient lighting, daylighting, lighting controls, and electrical systems for a variety of building types. Ms. Reitterer has designed energy systems incorporating a multitude of sustainable strategies, including photovoltaic energy, solar thermal heating, daylighting optimization, wind power, and LED lighting. She doesn’t just design for new buildings, either; she also performs energy audits on existing buildings and develops master plans for future construction.

Ms. Reitterer is a frequent speaker at local and national conferences on microgrids, energy audits, lighting, sustainability, and power systems. She is an award-winning lighting designer and has been recognized for her roles as an entrepreneur, a leader in sustainable design, and a successful woman in business.

William Aldridge PE, QCxP

Mr. Aldridge is the mechanical department manager for Elm Engineering, Inc. As a licensed engineer and a Qualified Commissioning Provider, he oversees and performs mechanical design and commissioning for the firm. He has designed cutting-edge systems for some of the most energy-efficient buildings in the state. Thanks to his many projects with colleges and universities in North Carolina, Mr. Aldridge is an expert in the application of Senate Bill 668 for energy conservation for State projects.

Mr. Aldridge has over 18 years of experience in mechanical engineering, project management, commissioning, and auditing. His experience includes an extensive variety of systems, including central chiller and boiler plants, ice storage, geothermal heat pumps, variable refrigerant air conditioners, solar absorption chillers, underfloor radiant heating, and solar thermal heating. His expertise extends to all facets of the construction process–project scheduling, load calculations, system design, life cycle cost analysis, construction administration, and maintenance and verification.

Derk Beutler CPD, CET, ARCSA AP

Mr. Beutler manages the fire protection and plumbing team of engineers and designers. Mr. Beutler is an expert in fire sprinkler system and rainwater catchment systems. He has over 28 years of experience in fire protection and plumbing systems design and construction.

An important and highly desirable expertise comes from his experience as a licensed North Carolina Fire Sprinkler Contractor. His fire protection capabilities include wet, dry, pre-action, deluge fire sprinkler systems, life safety alarms, and special systems including dry and wet chemical, clean agent, and foam. He specializes in rainwater catchment system planning and design. His plumbing capabilities include cold and hot water, waste and vent, storm water, and specialty design for compressed air, fuel gas, medical gas, and vacuum systems.