Demand response is a control method that changes electricity use when grid conditions or price signals change. Instead of supplying all demand from the power plant side, utilities, aggregators, and automated devices can delay, reduce, or shift consumption during peak periods, congestion, or supply shortages. Common examples include smart thermostats, industrial load shedding, battery-backed systems, and flexible charging for electric vehicles.
In cybersecurity, demand response matters because it depends on software, metering, remote commands, and third-party platforms. Those components create attack surface: weak authentication, compromised controllers, or manipulated pricing and telemetry can cause unexpected load shifts or disrupt grid balancing. Defenders use strong access control, signed commands, monitoring, and fail-safe fallback modes to keep demand response reliable. When secured well, it helps reduce stress on the grid; when compromised, it can become a tool for disruption.