David Hippensteel, President, is a lifetime resident of Indiana with over thirty years in business as a mechanical contractor. He is a co-owner of Riverbridge Electric, specializing in plumbing, electrical, HVAC. He installed a solar thermal system in 1978 and has been training and installing small wind, solar thermal, and photovoltaic systems in past years and is the first dual-certified NABCEP installer in the state. David has been a long time advocate of energy efficiency and renewable energy.  David’s wife is an educator and they have two children in college. He is currently involved in a few committees and think tanks.  Renewable energy is his passion, yet he understands the challenges involved in moving toward a cleaner, more sustainable way of living.

Mac Williams, Vice President, is a LEED Accredited Professional with backgrounds in both Architecture and Mechanical Engineering.  He currently runs his own design and consulting firm, INVERDE, LLC in Fishers, IN specializing in energy-efficient and green residential design as well as LEED consulting.  Mac is also a recent adjunct faculty member of Ball State University’s College of Architecture. Mac has been a frequent speaker at Indiana “green” events to promote and educate for green building and is perhaps most noted for his leadership in the growth and recognition of the US Green Building Council’s Indiana Chapter.  He was instrumental in securing more than $85,000 in grant monies from both the State of Indiana and USGBC National to promote the chapter’s development.  Mac was also the originator and chair of the Indiana Building Green Symposium (IBGS) which is now a USGBC-led annual conference attended by more than 400 A/E/C professionals yearly.

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John Haselden, Secretary, is a Principal Engineer in Corporate Affairs at Indianapolis Power and Light Company (IPL).  He works in the evaluation, planning and regulatory approval process of environmental compliance options, renewable resources and Demand Side Management (DSM) programs at IPL. He is the author of IPL’s Rate REP (Renewable Energy Production) feed-in tariff currently awaiting approval by the Indiana Utility Regulatory Commission.
He has over eighteen years of experience at IPL and has worked in engineering, planning, fuel supply and marketing and was also the Director of Engineering for a regional railroad before rejoining IPL in his present position. He graduated from Purdue University with a Bachelor of Science in Civil Engineering.  He also graduated from Indiana University with a Master of Business Administration. He is a Registered Professional Engineer in the State of Indiana.

Leon Bontrager, Treasurer, owns and operates Home Energy, LLC which has been in business since 2000. He specializes in grid-tie and off-grid solar and wind systems, solar thermal systems, and battery back-up systems utilizing power inverters. The company is a full service renewable energy contractor stressing education, sales, installation, and service. Leon has worked with both NIPSCO in Northern Indiana and AEP in Southern Michigan to install the first several net metering solar systems in their areas. He worked with both utilities to help them create their net metering contracts. Home Energy installed the first 5 Net Metering facilities in the Michiana region, and continues to be a leader in all renewable energy installations in this region. He is one of seven NABCEP certified solar PV installers in the state. Leon and his wife, Ellen, are the parents of 6 energetic boys.

Laura Arnold, Board Member, is the owner of The Arnold Group, a governmental affairs consulting business started in 1984. She served as the organizer for SUN DAY activities in 1978 in metropolitan St. Louis. She was instrumental in the passage of Indiana's solar tax credits in 1980. Her first renewable energy project was while working for the city of Fort Wayne. She obtained DOE funding in 1980 for a solar energy retrofit of a fire station. She was a founder of the Indiana Solar Energy Coalition and the Solar Collective, as well as serving as the Executive Director of the former Indiana Solar Energy Industries Association in the mid 1980's. A Purdue graduate she currently specializes in energy, utility and telecommunications public policy at the local, state and federal level. She is a founding member of the Indiana Renewable Energy Association.

Chris Striebeck, Board Member, is a graduate of Wabash College and the Indiana University Schools of Law and Business and has completed his Leadership in Energy & Environmental Design (LEED) accreditation for new construction. He is currently the principal of Integrated Development Services, Inc. (IDS) which is a design+build development and project management firm that specializes in customized commercial and residential turn-key projects. The company offers solution-oriented building energy assessments which identify, analyze and implement specific solutions to improve building energy conservation and efficiency, and the creation of clean distributed renewable energy generation.