Executive summary
November 2026
BESS and cogeneration that lower your bill, with measured savings and no upfront investment.
ENEGRIN, the energy company of the Córdova Group, designs, installs and operates on your site a BESS (energy storage system) or a gas-fired cogeneration plant. Savings are measured with two meters and your tariff’s formulas, and your auditor can verify them. For plants paying more than MXN 200,000 a month for energy, with CFE, qualified supply or any other private-supply scheme.
The guarantee
It is written into the contract and applies under both models. If savings are lower one month, you pay less. If there are no savings, you pay nothing.
The two models
| Item | Shared savings (no investment) | Purchase of the system |
|---|---|---|
| Upfront investment | None. You take on no debt, post no financial guarantees, and your credit lines remain available. | The system’s price, in a proposal based on your data. |
| What you pay each month | With BESS, a percentage of measured savings. With cogeneration, the energy delivered, up to 15% below what CFE would charge you. | Only the operation and maintenance fee, also a percentage of measured savings. |
| Responsible for the system | ENEGRIN installs, operates, maintains, insures and answers for its performance. | ENEGRIN operates and maintains it. The system is yours. |
| Term | BESS: 10 to 15 years. Cogeneration: 15 to 20 years. Purchase option at any time. | 5-year O&M contract, extendable. |
| Permits and filings | ENEGRIN, under both models. Installation is done without stopping your plant: only the final connection requires a brief, scheduled outage. | |
Executive summary
November 2026
How savings are measured
Two certified meters and your tariff’s formulas
One meter, in parallel with CFE’s, reproduces your bill. A second meter, on the system side, measures what the system delivers to you. Both are class 0.1S (IEC 62053-22), more accurate than CFE’s. Your bill’s formulas and tariffs are applied to both readings, item by item, VAT included. Every month, the forecast bill is reconciled against the actual bill on the Ollin Platform, where your auditor can log in with a read-only user.
What the system does
The BESS charges during base hours, when energy is cheapest, and discharges during peak hours, when it is most expensive. That trims your peak demand, and it also improves your power factor. If the power goes out, it picks up the load through automatic transfer. Typical autonomy is 2 hours at full discharge, and it is set when the system is sized. Cogeneration generates on your site with Cummins natural gas engines and an integrated BESS, with voltage and frequency guaranteed by contract.
Who stands behind the contract
The Córdova Group, with industrial engineering in Mexico since 1987 and more than 200 projects in 25 states, and our international group, with more than 300 MW of BESS installed in 13 countries and regions. The technology we integrate: Siemens industrial controls, Cummins engines and Tier 1 cells from CATL and EVE Energy. The cells are certified to IEC 62619 and the system is tested per UL 9540A.
Next step
The Ollin Simulator calculates your savings with your plant’s consumption data: clientes.enegrin.com. For a proposal with both models, or to see a BESS operating in Mexico, write to desarrollo@enegrin.com or call +52 (625) 585 0918. More detail: enegrin.com/en/contracting/ and enegrin.com/en/transparency/.