Act NOW before a reliable, clean, abundant, and affordable source of energy is banned in San Luis Obispo n September 3rd, the San Luis Obispo City Council will vote on an ordinance to ban natural gas from all new buildings and homes, including a ban on natural-gas appliances such as stoves — a move that could leave San Luis Obispo residents broke and in the dark with skyrocketing energy bills and potential trouble with the energy grid.