Solution · BESS · Energy storage for industry
A BESS that calculates every charge on your bill
That is how it generates the maximum savings Mexican tariffs allow.
ENEGRIN designs, installs and operates BESS (energy storage systems) at industrial plants in Mexico. Under shared savings you get yours with no investment and receive part of the savings. If you buy it, you keep all the savings.
27–37%savings, measured
No savings, no paymentwith shared savings, by contract
99.98%match, forecast vs. actual bill
Ollin EMS, the intelligence that runs your BESS
Ollin EMS is ENEGRIN’s own energy management system.
| ENEGRIN Ollin EMS | Generic factory EMS |
|---|---|
| Ollin EMS: Built for Mexico’s tariffs and your plant | Generic EMS: The same for every country, on fixed schedules |
| Ollin EMS: Calculates every charge on your CFE bill | Generic EMS: Does not calculate CFE charges |
| Ollin EMS: The maximum savings Mexico’s tariffs allow | Generic EMS: Leaves savings untapped |
| Ollin EMS: Your real savings every month, verifiable by your auditor | Generic EMS: Does not calculate your real savings month by month |
Many BESS integrators in Mexico install the generic factory EMS.
A day at your plant with BESS
What the system does while your plant produces
CFE demand during peak hours
4 kWDrag across the chart or use the arrow keys to move through the day.
Typical profile of a plant on the GDMTH tariff, summer schedule (peak hours 20:00–22:00).
At peak, the plant draws energy from the BESS and the demand CFE records drops. This is called peak shaving.
Transparent and verifiable by your auditor
Every month you see your savings, and any auditor can verify them.
Savings measured on CFE bills
If you pay MXN 300,000MXN 500,000MXN 1 millionMXN 2 millionMXN 5 million a month, that is MXN 270,000–370,000 less.
Bill forecast
Average match with the actual bill.
You never pay more than you would have paid without the system
It always applies, even if you buy it, and it is written into the contract. Under the no-investment model you take on no debt and your credit lines remain available. Your only obligation is to pay out of savings the system has already generated. See both payment models
Fully integrated in a cabinet or container, ready to connect
And if your plant changes, the system can be relocated.
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Automatic fire suppression, chiller and heater
They protect the batteries while charging and discharging.
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Batteries
Tier 1 cells from CATL and EVE Energy, two of the world’s top three manufacturers of energy storage cells (TrendForce ranking, first half of 2026)
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Battery management system (BMS)
Looks after battery charge, temperature and service life
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Electrical protection
Inside the cabinet, the breaker. In a separate panel, the main breakers and the rest of the protection.
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Power conversion system (PCS)
Converts the batteries' energy for your plant’s electrical network
Ollin EMS
Our own energy management system, with artificial intelligence adapted to Mexico’s tariff rules
Industrial control
In a separate panel
Remote monitoring (IoT)
BESS status, power quality and monthly savings, on the Ollin Platform
Certifications
IEC 62619, IEC 62933-5-2, UL 9540A and CE. The full list of international certifications and testing is on the Technology page.
BESS in operation
If the power goes out, the BESS takes the load
Normal operation
The system monitors the grid
If it detects an outage, a severe voltage deviation or a phase failure, it disconnects from the grid and powers your plant.
A BESS can be sized to back up your whole plant or only part of it.
For plants paying over MXN 200,000 a month
For factories, hospitals, hotels, data centers and shopping centers.
GDMTH
CFE’s large-demand, medium-voltage, time-of-use tariff
DIST
CFE’s industrial-demand tariff at subtransmission
DIT
CFE’s industrial-demand tariff at transmission
Qualified supply
Buying energy from private suppliers, under this or another scheme
Savings depend on your tariff and on how your plant consumes. The Ollin Simulator calculates them with your plant’s consumption data.
Frequently asked questions
How much does a BESS save a factory on the GDMTH tariff?
Measured savings on the CFE bill are 27–37%.
That is what has been measured in ENEGRIN projects operating in Mexico, totaling more than 1 MWh, and it varies with the season and the consumption pattern. You can see your plant’s figure in the Ollin Simulator with your plant’s consumption data and, once the system is installed, two meters measure it every month.
Do I have to invest?
No. Under the shared-savings model, the system pays for itself out of the savings.
ENEGRIN installs, operates and maintains the system. You can also buy it at the outset or later on. How savings are split under each model
Will installation stop my plant?
No. The work is done without interfering with your operation.
Only the final connection requires a brief outage, scheduled with you and your maintenance team.
Does the BESS keep the plant running during a power outage?
Yes. The system takes the load with automatic transfer.
A BESS can be sized to back up your whole plant or only part of it. Typical autonomy is 2 hours at full discharge, and it is set when the system is sized.
Do I need a CNE permit to install a BESS behind the meter?
No, provided the energy is used only in your plant, without being injected into or sold to the grid.
The storage provisions of the CNE, Mexico’s National Energy Commission (DOF, Mexico’s Official Gazette, April 16, 2026), treat that system as part of your facilities. You do need two things. First, a technical study filed with CENACE, Mexico’s grid operator, because the BESS modifies your load center (the legal term for a site that receives power from the grid). Second, compliance with the Grid Code, NOM-001-SEDE-2012 and the technical standards in the provisions. ENEGRIN handles all of it. The system we install is certified to IEC 62619 and IEC 62933-5-2, standards listed in those provisions. Full permit guide
Is a BESS safe next to my plant?
Yes. The cells are certified to IEC 62619 and the system is tested per UL 9540A.
The enclosure includes automatic fire suppression and temperature control, ENEGRIN monitors it continuously and, under the no-investment model, ENEGRIN carries the insurance.
How do I know the savings reported to me are real?
Because we measure them with two meters.
One in parallel with CFE’s meter and another on the BESS side, which measures what we deliver to you. Both are certified class 0.1S meters (IEC 62053-22), more accurate than CFE’s meters. We apply your tariff’s formulas to both. We forecast your bill before it arrives and reconcile it against the actual bill, with a 99.98% average match. You see that reconciliation on the Ollin Platform every month. Any external auditor can reproduce the calculation. How to compare BESS proposals
Before you request proposals, check how much an industrial BESS costs in Mexico, what the Grid Code requires on power factor and the GDMTH charges for your division.
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