Thankfully I was ahead of the game on the storage front. I track temperature and humidity stats daily in a spreadsheet daily [because I'm a geek and that's how I roll], and am very satisfied with the results since the door was hung. In the cold of January my cellar is in the 8C which is a touch cold, perhaps, but I have a plan to bring it up a degree in the ass of winter. In the summer the wine cellar floats in the 15C area.
How did I do it? I took ‘How and Why to Build a Wine Cellar‘ out of the library over, and over. The book has loads of inconsistencies, is not brilliantly compiled, but when you get your head around the important bits on the making of, it is the best resource I found. A few thoughts about it: passive cooling is brilliant, his humdification system works very well, his siting advice is sound, and the construction, insulation, and vapor barrier advice seems solid as well.
The current project, which I will also certainly fail to post consistently about – I’m building, well, mostly finishing my root cellar. Different humidity and temp specs, ventilation needs – whole different ball park. But I’m on it, it’s fun, and I can’t wait to reap the rewards.