Chapter 01 · Climate & transitionEnergy & Transition
Centralized generation
Definition
The conventional model of electricity supply in which large-scale power plants (coal, gas, nuclear, large hydro) generate power at sites typically distant from demand, with electricity transmitted over high-voltage grids and distributed to end users. It contrasts with distributed generation, where smaller units produce power at or near the point of consumption.
References
Supports definition and framing.
Overview
What it means
Centralized generation built the twentieth-century grid: economies of scale, dispatchable output and centralised control made it the default architecture. Its liabilities in a decarbonising system are transmission losses, long infrastructure lead times, exposure of distant demand to single-point failures, and the lock-in of fossil assets.
The energy transition is often framed as a shift from centralised fossil generation toward distributed renewables — but the reality is hybrid: utility-scale wind and solar farms are themselves centralised generation, while rooftop solar, microgrids and batteries decentralise the edge. Grid planning now optimises across both.
How it is used
Energy-system modelling contrasts centralised and decentralised pathways; utility regulation (rate base, interconnection) reflects the centralised legacy; resilience planning weighs distributed alternatives after outage events; community-energy policy challenges the centralised ownership model.
Why it matters
The centralised-versus-distributed choice shapes grid investment, energy democracy and resilience for decades — the architecture question behind the energy transition.