System control and dispatch covers the control infrastructure that operates the power system in real time, including national and regional control centres, load despatch centres, energy management and SCADA systems, and the balancing and market dispatch functions they carry.
The Capability Development Index tracks the events that move a capability — operational use, technical breakthroughs, procurement decisions and the industrial base behind them — and places each on the record with the date it happened.
Recent developments cover the current period. Historical developments are the inflection points that produced System Control & Dispatch as it stands today.
Practical electric networks became too complex for hand calculation, so from the 1920s dispatch and load-flow computations were automated using specially built analogue computers known as network analysers. This marked the start of machine-assisted real-time operation of the power system.
In the 1960s digital computers superseded the analogue network analysers used for power system calculations. The shift enabled faster and more comprehensive modelling underpinning modern energy management and dispatch systems.
By 2016 real-time balancing in North America was divided among 74 balancing authorities, each running a regional control centre. These bodies, overseen by reliability coordinators, replaced the simpler vertically integrated utility model of system control.