Most LED based dimmer circuits work by converting the extra current that would otherwise be creating light into heat; i.e. every dimmable LED is functionally a

Most LED based dimmer circuits work by converting the extra current that would otherwise be creating light into heat; i.e. every dimmable LED is functionally a space heater. There is no "feed it less energy". It's "convert more and more of what would be light into heat that has to be thermally rejected". Was a bit of an eye opener when I realized that while working on some dimmable LED track lighting once.