A method of distributing charge capacity to electric vehicles in a charging system that includes a solar charge capacity generated locally. The method may include: determining a requested charge for the plurality of electric vehicles, calculating a requested charge time, the solar charge capacity comprising the total charging capacity of the charging system via solar generated energy; calculating a charge time capacity, the charge time capacity comprising the available charge time of the charging system; comparing the requested charge to the solar charge capacity; comparing the requested charge time to the charge time capacity; and if it is determined that either the requested charge is greater than the solar charge capacity or the requested charge time is greater than the charge time capacity, auctioning the solar charge capacity to operators of the plurality of electric vehicles.