Electricity is interesting here, and expensive. Commercial use is higher than residential. Here is a short cut and paste from the Zihuatanejo blog, zihuatanejo.net in regards to residential rates:
Tiered rate: The more you use the more you pay, lots more. Low use in KWH are reasonable at tier one. This will run a fridge, a few lights and fans so the average low paid local can afford it. But the more KWH you use will quickly put you into higher and higher tier rates really fast. This part is easy to understand.
Tiered over time is a bit harder to understand. For example, let's say you run all your fans, don't turn off lights when not in use, use a computer and add some other high wattage users so you are in a high tier rate category. Here is the tricky part: Using a lot of KWH will kick you into a higher tier rate AND for the first billing period it won't look too bad, say 2,000 pesos. Then on the second billing period it will jump to 4,000 pesos, then the third billing period might be 7,000 and then so on and so forth until you max out on both tiers. Not only that, if you figure out it is costing you a lot of money you don't go to both the lower tier rates on the next billing period. You must "walk down the tiers" over the next several billing periods.
Here was my response:
To make it muddier, here in Zihuatanejo, we are allowed 800 kwh per 2 month period before we go into the DAC rate. The DAC rate hurts. Once your 12 month average exceeds the 800 kwh per billing period, you stay at the DAC rate until your 12 month average drops below 800. It's not an easy thing to get out of.
There are 2 tiers before you hit DAC, that take you up to 800 kwh.
We read our meter every Sunday (used to be daily) always turn off fans and lights and when we bought appliances and AC units, paid the extra for the inverter types.
We use our AC 3-4 hours a day in the summer, use the washer and dryer, fans, microwaves, run 3 refrigerators and 3 computers. Our bill was for 695 kwh, 983p, about $50 US.
End result, non commercial rates, we are very careful and use less than our allotted kwh to stay in the non penalty range-notice no TV, or anything else not listed.
Commercial rates are killer. Electricity is affordable for the worker who uses a little and a LOT for those that use more. Seems fair.
I agree that a 12 amp limit and turning off the electricity is a deal breaker. If you can't run at least your fridge and something else, what's the point of electricity? In that area AC is a must after a drive from either Mazatlan or San Carlos. Charge accordingly. Offer dry camping for those that will run their generators.