Everybody uses solar energy in one form or the other. It is a source of life to human beings, plants and animals. Indeed, sun is fuel of life. In this article, we briefly discuss the usefulness of solar energy and developed a computer software package, SolarSoft for the evaluation of Bowen and evaporative fraction models. With a decade data from four Meteorological sites in Nigeria, we estimated two solar laws of Wien and Stefan-Boltzmann. Besides, we evaluated local standard time meridian, local solar time, and time correction factor, Equation of time, as well as declination, elevation, maximum elevation for Northern and Southern hemispheres, Azimuth, Zenith and hour angles. A dynamic class library was developed for all the models, which other developers will find salutary in their works. SolarSoft functions to specifications. Photovoltaic system Engineers will benefit tremendously using our package to obtain not only elevation angle, but also its maximum values for photovoltaic system simulation. Virtually every Atmospheric Scientists will benefit from the use of SolarSoft as an efficient, flexible and accurate research tool.

Bowen ratio Solar laws SolarSoft Solar time