It kind of depends on what your goals are! I would like to maintain my flock for as many years as possible (because, though I'm not unwilling to cull and butcher as necessary, I do get attached to individuals and would like to have them around a little longer) while some people are more production-focused and will butcher their hens and start over every 1-2 years because that makes some economic sense. If you want to maximize egg production over just 2 years, supplementing the light is the way to go - if done consistently, the hens will not molt and will continue to lay through the winter. If you want to PROLONG the reasonably productive life of your hens, a break from laying to molt in the winter will often result in still acceptable production over more years, and the quality of the eggs after the molt may be better, too. PS: We've turned the corner now after the solstice, and days are getting longer. My hens have finished molting and are starting to lay again, BIG beautiful eggs - yesterday got 9 from my 20 hens, well up from 0-3 eggs a few weeks ago! A little patience...