<p>Non-orthogonal multiple access (NOMA) with wireless energy harvesting (EH) aims to meliorate energy-and-spectrum efficiencies. Notwithstanding, broadcast feature of wireless transmission makes it susceptible to eavesdropping. This research exploits jamming to secure NOMA with EH under consideration of practical imperfections like channel impairments (path loss, fading, shadowing), nonlinear EH, and imperfect jamming suppression at legitimate receivers. The secrecy performance of the proposed jamming technique is quickly assessed through new expressions of key performance metrics. Results illustrate a considerable security degradation induced by these imperfections. However, the proposed jamming technique applied in NOMA with EH can hinder absolute outage and attain better performance than two reference schemes with either orthogonal multiple access or non-jamming.</p>