There are lots of factors that feed into this: lots of solar, batteries, more efficiency, improved insulation.
Some others: increase of heat pumps, energy poverty, reduction in industrial energy (both due to good and bad reasons)
Ultimately though, its not about how much energy per capita, its about the sources of energy, and how effectively they are used... my heat pump uses infinity more electricity than my boiler, but far more effectively uses the underlying energy source.
There are lots of factors that feed into this: lots of solar, batteries, more efficiency, improved insulation.
Some others: increase of heat pumps, energy poverty, reduction in industrial energy (both due to good and bad reasons)
Ultimately though, its not about how much energy per capita, its about the sources of energy, and how effectively they are used... my heat pump uses infinity more electricity than my boiler, but far more effectively uses the underlying energy source.