More Good News
It's all very fine, very high-tech. But I was thinking a while ago, when this concept was first mooted. Air-conditioning only really works in closed environments. The flimsy, uninsulated glass and metal structures that we use for bus shelters now (and that the new operators are proposing) are not really suitable - the energy cost will be very high.
So why not have a look at the traditional architecture of the region. Wind towers should work superbly well. You need some solid mass in the structure (absorbs the coolness of the night and slowly radiates it during the day, thereby offsetting the solar heat gain), but the wind towers deflect any breeze downwards and get the air moving. Operational energy cost: nil.
Or have a look at other alternative cooling methods (evaporative cooling is an excellent one). Combine that with solar power and you might be able to provide cool bus stops that do not require the construction of a new power station (exaggeration!). Operational energy costs: a fraction of air-conditioning.
Either way, it troubles me that the ad company are saying they'll have stuff like recycling bins at these shelters, implying that they have some interest in the environment, when their actual solution is such a serious energy guzzler - and it's actually completely the wrong solution.