Grid Tie Inverter (GTI) system are allowed to sell their energy to the utility grid. Different analysis has made great efficiency with the economic feasibility of Solar Photovoltaic (SPV) projects. Tax rebates, government subsidy and utility payback policies have made the land owner to design in optimal construction. While considering endurance of the SPV is 25 years, an optimal solution is mandatory for the large investment. This paper proposes a novel algorithm for the selection of a PV generator site with the optimal shade. The shade profile model of gabled roof has been analyzed with the result of optimal arrangement of pv array to yield more power for rural electrification. And for erecting a PV system, shade analysis of adjacent building with different direction placement of PV generator is comparatively analyzed. It also focuses on optimal retrofitted PV array into existing roof and buildings for the development of electrification. Performance of various sites with different arrangement of PV array with shade time calculation is accurately analyzed using solar pro simulation software and tested with a different shade profile of PV array with the feasible energy production.