I think the way to make it profitable is to install PV canopies over the charging stations. Then at least during the day the electricity is free.
Of course capital cost is higher because you still need a fat feed from the grid and transformers and coolers, and maintenance might be more costly, but free electricity during the day when most people are driving would almost certainly pay that back quickly.
Of course capital cost is higher because you still need a fat feed from the grid and transformers and coolers, and maintenance might be more costly, but free electricity during the day when most people are driving would almost certainly pay that back quickly.