Hydrogen production from a renewable energy source (e.g., solar and wind farms) via electrolysis can fluctuate significantly due to power variability. However, a stable hydrogen delivery is crucial for processes requiring hydrogen as a feedstock such as ammonia synthesis plants. Ensuring a steady hydrogen flow into these chemical plants via a pipeline can be a challenge. Hydraulic transient models can be utilized to design a pipeline system promoting stable delivery flows. Three example cases representing fluctuating renewable power sources of solar, wind, and combined solar and wind are provided. In addition, effects of pipeline sizes, lengths, and pressures on the hydrogen transmission and storage performance have been investigated using these models. The modeling results demonstrate the feasibility of achieving a stable hydrogen delivery when these three key parameters are designed properly. A methodology is proposed to identify the feasible and infeasible scenarios for each modeling case. The paper also reveals the inherent behavior of the pressure fluctuations that are caused by packing and unpacking mechanisms are essential to provide buffers to bridge the gap between hydrogen supply and demand.