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- Up-to-date CFE rates and NOM tables
- Calculated in your browser
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How much would you save with solar panels?
With your CFE bill: how many panels you need and how fast they pay off.
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How much electricity does each appliance use?
Find what raises your bill and how much you save by turning it off.
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What size UPS or inverter do I need?
For power outages: the unit size and how many batteries.
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What wire gauge do I need?
The gauge and breaker Mexico's NOM code requires, by current and distance.
Guides to understand your CFE bill
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The DAC rate: what it is and how to get out
Each rate's limit, what DAC costs and how to return to your normal rate.
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How to read your CFE bill
Your Spanish-language bill explained: rate, kWh, tiers, VAT and DAP.
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How many solar panels do I need?
The step-by-step math with your bill and your state's sun hours.
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Which appliances use the most electricity?
kWh per two-month bill for each appliance and what it can cost.