Demand side response (DSR), otherwise called demand response (DR), is the practice of balancing electricity supply and demand by flexibly adjusting consumption instead of only ramping up generation. Consumers turn up, down or shift their usage in response to external signals such as time‑of‑use prices, dynamic tariffs or direct requests from a grid operator, often earning incentives or bill savings in return. Unlike energy efficiency, DSR is not about using less energy overall but about using it at the right time, giving consumers an active role in stabilizing the grid without disrupting their core operations.