About US

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Dustin StifflerPartner

As Partner  of AUI, Dustin brings over 15 years of experience in general construction with a proven track record for ensuring projects are delivered on time, within budget and to the highest quality by effectively organizing, managing and utilizing resources.  He is exceptionally skilled at building and maintaining external and internal relationships with owners, architects, engineers, consultants and subcontractors.

Responsible for the leadership and management of the commercial department, Dustin oversees estimating and project management, structuring of strategic proposals, negotiating of business terms, and closing business ventures. Dustin continues to be very hands on as well by running multiple projects and working directly with owners.

Dustin has spent his entire career dedicated to AUI.  Starting in 2003 as a project engineer and working his way up to project manager, construction manager and ultimately partner in 2015.  Dustin is originally from Stillwater, Oklahoma and attended Oklahoma State University majoring in Construction Management Technology.

Charles PlumhoffPartner

As Partner and CFO of AUI, Charles is responsible for all financial operations of the company, including financing, reporting and accounting, risk management and legal matters. Charles also oversees the Human Resources and Technology departments of the company. He has over twenty years of experience in business management and executive leadership of construction companies.

Charles has his BBA from the University of Texas at Arlington, where he graduated in 1991. He has his CPA license (Certified Public Accountant) and is a CCIFP (Certified Construction Industry Financial Professional).

Charles is active in industry associations and gives back to the industry by participating at many levels, such as being a board member of the Dallas/Fort Worth Chapter of CFMA. He is also a member of the Accounting and Reporting Committee for CFMA National, the Tax Advisory Group and Accounting and Reporting Committee for National Associated Builders & Contractors (ABC).

Mario CarbonePartner

Mario has 25 years of overall construction industry experience with more than 10 years specialized in renewable energy. He plays a key role in the continued growth and success of AUI with his primary focus being on the renewable energy market. Mario’s focus is to utilize his industry experience and relationships to grow AUI’s footprint in the renewable energy sector.

In addition, Mario’s diverse and operations focused background includes commercial building, heavy civil (earthwork, underground utilities, bridge & road), water/wastewater, railroad, multi-family). More recently his focus has been on successfully executing more than 1200 MW of wind and 800 MWdc of solar projects.

Prior to joining AUI, Mario was a Vice President at Natgun Corporation in Wakefield, MA. From 1992-1997, he occupied several job posts of growing responsibility at Turner Construction Company in Boston, MA.

Born in Lima, Peru, Mario earned a Bachelor’s degree in Civil Engineering in 1992 from Union College in Schenectady, NY. He is an active member of The National Institute of Renewable Energy (NIRE), The Wind Alliance, Solar Energy Professional Network, Wind Power Industry Professionals, Solar Energy International (SEI), American Wind Energy Association (AWEA), Wind Energy on Public Lands, and he has completed his Green Advantage Environmental Certification (GAC).