Oh cool, I've checked cal-isos supply graphs occasionally and looked again after reading your comment. It's the first time I've noticed there being times in the

Oh cool, I've checked cal-isos supply graphs occasionally and looked again after reading your comment. It's the first time I've noticed there being times in the night where "battery" is the main source of electricity (albeit only for an hour or two, in the early morning it falls behind gas, hydro, nuclear etc). I'm sure that capacity is only growing going forward.