camelot-forum.co.uk

This is interesting/shows the complexity of the situation. Even though LEDs are way more efficient than incandescent or fluorescent, it looks like people simply end up installing more of them overall, and more people are getting access to electricity and lighting, so total energy demand for lighting hasn't actually fallen as much as you'd expect.

https://www.bbc.co.uk/news/business-67454472

Nothing is new in the world, this was thought about in 1865.


https://en.wikipedia.org/wiki/Jevons_paradox

In economics, the Jevons paradox (/ˈdʒɛvənz/; sometimes Jevons effect) occurs when technological progress or government policy increases the efficiency with which a resource is used (reducing the amount necessary for any one use), but the falling cost of use induces increases in demand enough that resource use is increased, rather than reduced.[1][2][3] Governments typically assume that efficiency gains will lower resource consumption, ignoring the possibility of the paradox arising.[4]

Green policies are doomed by human nature.

You also have to remember that if the led bulb is within the house the heating also has to work a bit harder.