We started Sustainable Earth LLC for the sole purpose of sharing Mark's thermal energy designs with the world. For several years he has held onto this designs for fear of the government or powerful oil interests would put him in danger. At last, we have decided to go through with the release of these designs regardless of risk. Releasing everything in the way we are will make it hard to gather financial support. However, our goal is to make the world better, not get rich.
I am a disabled solar thermal engineer with a master’s degree in environmental engineering from Idaho State University. I previously worked as an instructor in the engineering department at ISU, but I was forced to step away from my career due to serious illness.
Because of my health, I was never able to physically build many of the designs and systems I developed over the years. After spending a long time on disability, I eventually came to a difficult realization: if I could not build these ideas myself, the next best thing I could do was share them openly, in the hope that they might still help others. That decision led to this book.
My goal is simple, to explain practical solar and thermal energy principles in a clear, straightforward way that people can realistically apply to homes, small businesses, and communities. Some concepts are simple and immediately usable. Others are more complex and may require the help of a machinist, fabricator, or an entrepreneurial effort to bring them fully to life. A few designs may also require refinement and testing before they reach their full potential.
I want to be transparent about that. This work is not polished marketing material — it is honest engineering knowledge shared openly, with the understanding that real-world innovation often improves through collaboration and iteration.
All donations go directly toward helping build, test, and validate the systems described in the book. Either by supporting my own efforts to prototype, or by enabling others to do so. The first and most urgent priority is developing a ready-to-ship thermal powered refrigeration compressor. Reliable refrigeration has the potential to preserve food, reduce waste, and improve quality of life, at little to no ongoing energy cost beyond the materials used to build it. I have several other energy saving designs to work on, however, this one is priority #1.
I want to help others gain the tools and knowledge to help themselves. I believe deeply that energy-saving and life-improving technologies should not be locked away, patented, or shelved to protect the status quo. I would rather earn nothing than see ideas with real humanitarian value disappear because they were bought and buried.
If this work resonates with you, your support will help keep these ideas alive and available.
I am the son of Mark S. Hall and I am an avid supporter and contributor to his work. My degree is in Computer Engineering, however, I have developed an interest in renewable energy thanks to my dad. I work as his right hand man, assisting wherever I can. I believe in his goals and I know he has the potential to change the world for the better.