Energy and humanity are superimposed. Its importance to mankind and indispensable nature to the world cannot be overemphasized. Public institutions need energy to carry-out their daily activities. The increase in the demand for energy in public institutions can be traced to advancement in technology. Thus, resulted to a sharp increase in the energy consumption, thereby increasing the energy monthly utility bill astronomically. This has put pressure on public institutions in Nigeria, as most of them are heavily indebted to energy companies. Due to constant electric power failure in Nigeria, public institutions rely heavily on diesel generators to argument their daily energy need. Cost minimization and a sustainable clean energy has become a priority for the managers of our public institutions. This study was carried out to establish the exact amount of energy consumption at the Federal Polytechnic Bida, Nigeria, and fashion outways of reducing the cost burden for the institution. The study was achieved through the installation of “Efergy meter” to understudy the energy audit of the institution. Base on the result obtained, the exact amount of energy consumption were established. Solar photovoltaic (PV) system was considered clean and cost-effective options for our public institutions on the long term.