This is the foundation of dynamic demand control. In the United States, in 1982, a (now-lapsed) patent for this idea was issued to power systems engineer Fred Schweppe. Other patents have been issued based on this idea.
The foundation of dynamic demand control is established. In 1982, a (now-lapsed) patent for this concept was granted to power systems engineer Fred Schweppe. Subsequent patents have also been awarded based on the same idea.