Dear Camilla,
Overall, our reality in terms of climate is totally different, but I am as worried as you are and also need to lower the lighting nuisance this year, so I am going to explore letting the entire collection outdoor this winter, not in a greenhouse, but almost, and I am even going to move the Tanks (terrarium) from Nov to March outside.
However, I recommend my lights to anyone with a 100% guarantee of long-lasting and energy saving. Anything under that brad has bloomed beautifully but I cannot afford that many lamps. It is
SunLight