Thesis (B.S.) -- Cagayan State University, 2023.
Includes bibliographical references.

There is an increasing level of pollution and global climate change on the planet due to the excessive use of non-renewable sources of energy. This spurred a growing interest in harvesting green energy from all possible resources. One underutilized source is the energy that one expends during physical exercise in fitness gyms. This study was conducted to design and develop the rower machine energy generator as an alternative source of clean energy and determine the feasibility of a rowing machine power harvester. Testing was conducted on the students of the college of engineering and architecture. The stored kinetic energy was transmitted to the driven gear that is attached to the generator's shaft to utilize the energy from physical exercise. It was found that the system can generate about 10.4 watts of electric power, which can power DC light bulbs, fans, and the charging of mobile phones. The power generated can also be stored in a 9- volt rechargeable battery. The rowing machine can produce a usable amount of energy, and the time needed to recoup the investment cost is 10.52 years. On the other hand, the average lifespan of a DC generator and a manufactured rowing machine is 11.42 and 20 years, respectively. Therefore, the system is economically feasible because the payback period is shorter than the lifespan.