Distributed Energy Resource (DER)
Any small-scale energy generation or storage connected at the distribution level rather than the transmission level. Includes rooftop solar, home batteries, EVs, and demand response.
Why It Matters
DERs are transforming the grid from a one-way delivery system to a bidirectional network. Your solar + battery system makes you a DER — and increasingly, a grid participant (via VPPs).
Related Topics
Related Terms
Virtual Power Plant (VPP)
A network of distributed energy resources (solar, batteries, EVs, smart appliances) coordinated by a central platform to provide grid services collectively, functioning like a power plant.
Microgrid
A localized energy system that can operate connected to the main grid or independently (islanded). Typically includes generation (solar), storage (batteries), and load management.
Demand Response
A program where utilities pay customers to reduce electricity usage during peak demand events, often by cycling AC units, adjusting thermostats, or discharging batteries to the grid.