About Us

Alex J. Gulotta
Partner & Director of Sales

Studied Electrical Engineering at the University of Michigan and has a Bachelors of Science in Business Administration. In addition to his academic background, Alex has personally built several successful companies in a variety of industries, including plastic manufacturing, home improvement, and commodity trading. Alex brings his leadership and problem solving skills to NSE as the Director of Sales. As such, he is involved in teaching and training, strategic planning, organizational motivation and human resources, and most importantly; making sure the client experience is excellent from the beginning of any project to its successful completion.

Daniel L Seiler
Partner & Project Manager

Dan has an Associates Degree in Electromechanical, and is a Certified Master Electrician.
Having Dan join the NSE team is what sets us apart!! Dan brings an experienced skill set to National Solar Energy.
Dan has been involved in consulting, procuring, and managing multiple private and government contracts within the Solar and Electrical industry.

Jobs Awarded and Completed by our “Expertise”:

1).  Hired to be the Technical Consultant to a Washington D.C. based Non-Governmental Organization exploring the potential for the installation of private and utility scale solar systems at the Aswan Dam on the Nile River in Egypt.

2).  Awarded the contract to design & build with the National Park Service, Mount Rushmore National Monument.

3).  Awarded the contract with The U. S. Air Force to install life safety equipment at Seymour Johnson AFB in Goldsboro, North Carolina.

4).  Awarded the contract with the Department of Labor, Dayton Job Corps Center.

5).  Awarded contract with The National Park Service, Indian Dunes National Lakeshore to install an all new solar off-grid solar system throughout the 24 square mile park.

6).  Awarded contract with Menards Inc. to service/repair and install electrical and HVAC systems at 82 locations in 8 states.

7).  Awarded to install all electrical and controlling systems for new aluminum electroplating lines for Apogee Enterprises in Wausau, WI.


Executive-in-Environmental & Residence Sustainability Consultant

George P. Nassos is currently Director of the MS in Sustainability Management program and Executive-in-Residence at Driehaus College of Business, DePaul University. In addition, he is principal of George P. Nassos & Associates (www.georgepnassos.com), a consulting company focusing on environmental sustainability and renewable energy.  He is also president of Sustainable Energy Systems (www.ses-il.com), marketing a new onsite waste-to-energy technology.  He was recently elected to the Founding Circle of the Encyclical Working Group of the Chicago Archdiocese of the Roman Catholic Church with the mission to implement Laudato Si, the encyclical by Pope Francis – Our Care for Our Common Home.

Along with a colleague, he teaches an Executive Certificate Program on Global Business Sustainability, a one-day course covering:

  1. The Pursuit of Sustainability by Business: What
  2. Drivers Motivating Companies to Pursue Sustainability: Why; Company Ratings
  3. The Pursuit of Sustainability by Business: How
  4. Design of Sustainable /Green Products and Services
  5. Prioritizing, Planning, Communicating

He also lectures at Loyola University Quinlan School of Business as well as at the Lutheran School of Theology for a program titled “The Future of Creation”.

For 14 years, he was Industry Associate Professor and the Director of the M.S. in Environmental Management and Sustainability program at Illinois Institute of Technology’s graduate business school until he retired in 2011.  This program was ranked one of the top such programs in the world by World Resources Institute and The Aspen Institute.  He taught the sustainability capstone course since 1997 and, as a result, he has over 350 graduates/disciples preaching environmental and social sustainability worldwide.  Research for the capstone course resulted in writing the text book “Practical Sustainability Strategies: How to Gain a Competitive Advantage”, published by John Wiley and Son in 2014.  The second edition of the book was released in 2020.

Prior to academia, he worked 15 years for Chemical Waste Management, developing unique treatment and disposal technologies including fuel pellets from non-recyclable waste, and 16 years for International Minerals & Chemical Corp. in various managerial positions, including Managing Director of the company’s German subsidiary, IMC Chemie GmbH, for three years followed by one year in the same role of the company’s Dutch subsidiary, Nyma BV.  Working in Germany and The Netherlands planted the seed in his dedication to the environment and renewable energy.

Nassos earned a B.S. (U. of Illinois Urbana Champaign), M.S. and Ph.D (Northwestern U.) all in Chemical Engineering and an MBA from Northwestern University.