@ndpi high latitude with short winter days would probably be bad or dinner time. We've used it this winter tho, even at 4'C outside it can cook brussel sprouts perfectly.
@neauoire probably depends on the local microclimate as well. In Scotland we usually have persistent cloud cover during the winter in addition to low sun elevation and short days, which all takes a big bite out of the solar energy available on the ground.
@ndpi high latitude with short winter days would probably be bad or dinner time. We've used it this winter tho, even at 4'C outside it can cook brussel sprouts perfectly.