In order to estimate the energy cost and system efficiency for solar drip irrigation system. The experiment was carried out at the Al-Raed research station located in the Abu Ghraib area, west of Baghdad, for the fall season of 2023. A randomized complete block design (RCBD) with three replicates was used the least significant difference of 0.05 was used. The experiment consisted of three factors: The first factor was the solar panel type with two levels: monocrystalline and polycrystalline. The second factor was operating pressure of Irrigation system with two levels P1 (0.25 bar) and P2 (0.5 bar). The third factor was the dripper type with three levels: T1(4 L/hr.), T2(8 L/hr.), and T3(16 L/hr.). The following indicators were studied: Solar panel power(watt), energy cost ($/KWh), Irrigation system efficiency (%) and germination percentage (%). The results showed the highest results in solar panel power (1191watt), irrigation system efficiency (84.22%), germination percentage (86.11%) with the lowest power costs (0.230 $/KWh) achieved by the monocrystalline solar panel. Achieving the highest solar panel power (1156watt), the highest irrigation system efficiency (83.86%), and the highest germination percentage (83.68%) with the lowest energy costs (0.289 $/KWh) at the operating pressure P2. The dripper type T2 achieved the highest solar panel power (1157watt), the highest irrigation system efficiency (84.42%) and the highest germination percentage (86.46%).