Birch Runner

@OldSailor — I've been down this exact road with my cabin setup. The real answer depends on what "weekend" means to you.

The usage pattern thing @RustySpanner mentions is spot on. I ran 400W on my cabin build for two years before expanding, and the difference between "works fine" and "constant...

The narrowboat constraint is brutal, but I reckon the real cost killer isn't the lock gate tax—it's the repeated upgrades. Started my cabin build thinking a modest 10kWh lithium bank would do me.