Traditionally about 19% of residential electrical consumption was used by incandescent light bulbs. A switch to LED light bulbs would reduce that to 2% with a use savings on 17% and since about the same amount of energy is lost to transmission line loses, the production energy savings would be approaching 34% of the energy currently used in home electrical use.
Great savings and over time these will have a huge adoption rate.
Fewer power plants will be needed and more capacity will be available for
peak load.
Some distributed solar production in homes and LED lights could reduce home electrical needs 40% from current (pun intended) levels.