Pisat Solar - About Us

Bright Technology for a Brighter Future

PiSAT Solar is not your typical company. At PiSAT, we are dedicated to developing only energy-efficient, renewable technologies, and using those technologies to make only the highest quality lighting products available.

The PiSAT philosophy of business emphasizes the “triple bottom line”–economic viability, environmental accountability and social responsibility. Our products are designed to work as promised and built to last, as well as to reduce the environmental footprint and improve the lives of others in the Third World. Our Light for Africa program replaces dangerous kerosene lanterns with a healthy, safe, economical alternative. The K-Light will last for years with no pollution and no added cost for fuel.

At PiSAT, we’re changing your world, and ours, for the better. Check us out.

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PiSAT was founded in 2005 by four individuals who share a common passion for improving the quality of life in the world's most challenging environments. Today's PiSAT organization reflects the founders' commitment to creating renewable energy technologies capable of bringing new hope and new opportunities to individuals, communities and our planet as a whole.

William Greenhoe has more than 10 years experience in innovative energy product development. Prior to joining PiSAT, he served 7 years as vice-president of operations for Harding Energy. During his tenure, he directed the writing and implementation of the company’s manufacturing procedures, increasing production efficiency from 60% to 95%. Greenhoe also designed new cells and modifications to enhance the performance of batteries and coordinated a China-based team to develop new products. Additionally, he spearheaded a federally funded joint-grant with Ames Laboratories and Iowa State University to research the particle size of hydrogen storage alloys. Greenhoe received his bachelor’s degree in electrical engineering from the University of Michigan.

Martin Graber, MD, has been an active missionary for more than 25 years and has more than 40 years of experience in health care. He practiced medicine for more than 15 years in varying roles in Indiana. In 1980, Graber began his missionary work by serving as a physician at Tenwek Hospital in Kenya. He went on to work with Samaritan’s Purse and World Medical Mission in Somalia, Southern Sudan and Rwanda, and served 7 years as the medical director in South Narok, Naikarra. Since 2002, he has been a volunteer medical missionary in Kenya, establishing health centers, community health programs, schools and clean water initiatives. He volunteers with Compassion International, World Vision, African Medical Research Foundation (AMREF), and many other Africa relief agencies. He received his bachelor’s degree from Indiana University and his degree in medicine from Indiana University’s School of Medicine.

Nicholas Pietrangelo, DO, spent 24 years as an anesthesiologist before turning his interests to solar energy. In 1986 he founded the Sun/Harding Think Tank for solar power, which in 1991 became Harding Energy, Inc. Harding Energy was one of the very first companies to receive a license from Energy Conversion Devices (ECD) to manufacture and distribute NiMH batteries. Today, Harding is a leading battery cell manufacturer. A decade after founding Harding, Pietrangelo also helped to form the Grand Valley State University Renewable Energy Center in Muskegon, Mich. He received his bachelor’s degree from Fairfield University (Fairfield, Conn.) and his degree in osteopathic medicine from Chicago College.

Dale Williams, MD, has more than 40 years of experience in the medical field and started what is known today as the Koinonia Foundation. He practiced family medicine on his own for nearly 30 years. To provide healthcare for the poor, in 1973 he established a free medical clinic in Muskegon Heights, Mich. called the Koinonia Medical Center, and served there 20 years as CEO and medical director. He also spent time working as a missionary and providing much-needed medical care to those in the developing world. Williams currently serves as chairman of Pan's Innovative Science and Technology LLC (PiSAT) and of the Koinonia Foundation. He is a member of the American Academy of Family Practice, the American Medical Association and the Christian Medical Society. Williams has written two books based on his own experiences as a medical missionary: All Things Are Possible and After the Genocide. He received his bachelor’s degree from Eastern Michigan University (Ypsilanti, Mich.), his medical degree from Wayne State University (Detroit) and his MBA from the University of South Florida (Tampa, Fla.).

Peter Williams is a technology executive with over 20 years hands-on experience building high volume mission-critical systems. His expertise includes object-oriented development, large-scale network design, and corporate strategy for entrepreneurial technology enterprises. He is presently managing a global prime brokerage business technology team of over 300 developers, business analysts, infrastructure engineers and support personnel for UBS. Williams received his bachelor’s degree from the University of Michigan and his MBA from New York University. He is the author of Applied Perl (M&T Books, 2001).

PiSAT Solar - The Next Generation In Recreational Lighting

Bright Technology for a Brighter Future

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