Bipolar membranes are moving from niche to selective deployment. This briefing explores where on-site acid and base generation can materially reduce chemical price volatility, logistics risk, and brine disposal exposure—and where conventional dosing still wins on cost and simplicity. Drawing on global deployment data, it unpacks which applications are scaling, where execution risk remains high, and why economics are highly site-specific. Essential listening for decision-makers evaluating circularity, electrification, and chemical resilience without assuming a one-size-fits-all solution.