Transparency
What we say we save is what we save.
Many energy proposals promise savings that never reach the bill, because they are calculated with estimates or with tariffs that have already changed. With BESS, you pay us a share of the measured savings. With cogeneration, your energy costs less than what you pay today. By contract, you never pay more than you would have paid without the system.
Why we measure savings instead of estimating them
How were your savings calculated?
Without the system
With the system
You only pay on your real savings: MXN 360k
Measured with two meters and your tariff’s formulas. Measured savings are exact and auditable.
Illustrative shared-savings example, per million pesos on your bill.
Forecast bill vs. actual bill
average match between forecast and actual bill, last three billing months (August, September and October 2026)
measured savings on the CFE bill, depending on season and consumption
What each figure proves: the 99.98% average match shows that we calculate your bill the same way CFE does. On a bill of one million pesos, the difference is about 200 pesos. The savings are proven by the measured range on reconciled bills. Download “How we measure and reconcile” for your auditor · Download the executive summary
Only ENEGRIN gives you the Ollin Platform.
It is our own technology: it calculates your full bill with each month’s tariffs, and any auditor can reproduce the calculation.
Forecast against actual bill
Before your bill arrives, you already know what it will say.
Traceable savings
Every peso (MXN) of savings can be traced back to the meter reading, VAT included, just as on your bill.
Consumption and power quality
Demand, consumption by time-of-use period, voltage and power quality, from your phone or computer.
Exportable reports
Monthly PDF reports for your accounting team and your auditor, and unlimited users per plant.
Two meters and your tariff’s formulas
What each meter measures throughout the day
Peak21:00
Drag across the chart or use the arrow keys to move through the day.
Typical profile of a plant on the GDMTH tariff, CFE Norte division, summer schedule (peak hours 20:00–22:00). Illustrative example of one day.
Meter 1, in parallel with CFE
Measures, in parallel, the same as the CFE meter. We apply your bill’s formulas and tariffs, CFE’s or your supplier’s. That is how we reproduce your bill before it arrives.
Meter 2, on the BESS side
Measures the energy the system delivers to you, valued with the same tariffs and formulas as your bill. Together, the two meters give your actual savings for the month. The full method is delivered in writing to your auditor or finance team.
Both are certified class 0.1S meters (IEC 62053-22), more accurate than CFE’s meters.
Any auditor can reproduce the calculation
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Readings from both meters
The readings from both meters are the basis of every reconciliation. Your auditor can review them on request.
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Your bill’s tariffs
The tariffs CFE publishes each month for your region, which are on our tariffs page, or those in your supply contract.
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The same formulas
The bill is calculated line by line, the way CFE or your supplier does it. The Ollin Simulator uses the same calculation engine.
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Access for your auditor or finance team
Read-only access to the platform for a third party you designate. If you wish, an external auditor reviews the entire system.
Calculate instantly how much you would save with a BESS
Enter your plant’s consumption data or, if you prefer, upload your CFE bill. The Ollin Simulator tells you right away how much you would save and which system we recommend. To use it, create your Ollin Platform account with your company email.
No sign-up: download the two-page executive summary for your committee