This guide explains everything you need to know to build stand-alone photovoltaic systems that can power almost anything you want.
Using solar panels without backup infrastructure makes renewable energy production much more affordable, efficient and sustainable.
Given the right conditions, a mechanical windmill with an oversized brake system is a cheap, effective, and sustainable heating system.
The hydro power installations in use today are less energy efficient than those of earlier centuries.
Boat mills, bridge mills and hanging mills were almost as widespread as windmills.
Would it make sense to revive the industrial windmill and again convert kinetic energy directly into mechanical energy?