Rising energy demands and the unchecked use of non-renewable sources have harmed the environment and increased the CO2 levels, prompting intensive research into clean, renewable energy technologies. Hydrogen-based energy is a promising method for converting and storing intermittent electricity from renewable sources in the form of chemicals. But the catalysts known for hydrogen production are costlier and in addition, their resources are meager. Hence, a simple, cost-effective, stable, and eco-friendly polymeric palladium ninhydrin phthalocyanine (poly-PdNPc) was synthesized, characterized, and assessed as a catalyst for the hydrogen evolution reaction (HER). The electrochemical activity of poly-PdNPc was enhanced by combining with conducting carbon material Ketjen-Black (KB) in an optimized ratio. The ratio of 3.5:1.5 (polymer to KB) organic hybrid exhibited an overpotential of -82 mV at -10 mA.cm−2 for HER in 0.5 M H2SO4, with a Tafel slope of 34 mV/dec and a mass activity of 3.1 mA/g comparable to Pt/C. Its superior activity and stability make it a viable electrocatalyst for practical HER applications. Enhanced conductivity, active surface area, π-π interactions, electronic density modulation, and a decreased d-band center contribute to its superior activity and stability, making it a feasible electrocatalyst for practical HER applications.