Renewable energy resources are environmental friendly and provide a lot of benefits to power system network in meeting the increasing demand of electricity. Integration of renewable energy resources to the grid system especially solar photovoltaic that does not have inertia may influence the behavior of power system. This paper analyzes small signal stability in a power system for various scenarios including when the system is subjected to disturbance with and without stabilizer and solar photovoltaic interconnection using PSSE software. The damping ratio and frequency oscillation are evaluated using Prony Method based on Eigenvalue analysis.