Energy conversion from waste acid and base can be realized by reverse electrodialysis with the acid-base neutralization (REDn). However, poor energy conversion performances, such as the low voltage and the low power density (<0.5 W/m2), caused by the high resistance and the low voltage of cell pair of “anion-exchange membrane (AEM) + neutral compartment + cation-exchange membrane (CEM)” in REDn stack, need to be improved as far as possible. In this study, bipolar membranes, which is of a low resistance of 5.05 Ω cm2 at 1.0 mol/L acid-base and a voltage of 0.778 V at ΔpH = 14, are utilized to replace the cell pairs of “AEM + neutral compartment + CEM” in REDn stack, to constitute a bipolar membrane reverse electrodialysis (BMRED) stack. Hence, high voltage, high current density and high power density (7.8 W/m2) are achieved in the BMRED process, indicating that BPM can efficiently assist reverse electrodialysis for energy conversion from the acid-base neutralization.