AES Tietê

Company history:

AES Tietê S.A., a company of AES Group, has 2.651 megawatts (MW) of power installed. With 10 Hydroelectric Plants located in central and northwest regions of the State of São Pause.

The commercial operation of the company started at April 1, 1999, after the corporate and patrimonial restructuration of energy sector companies of São Paulo, due to the State Privatization Program. At October 27, 1999, at public auction in São Paulo Stock Exchange, AES Group acquired equity control of the Company, developing since then activities of electrical energy generation in the State. AES Group is a world leader in energy companies sector, in the field of distribution and generation of energy, in Argentina, Australia, Bangladesh, Brazil, Canada, China, Dominican Republic, El Salvador, Georgia, Hungary, India, Kazakhstan, Netherlands, Mexico, Pakistan, Panama, UK, United States and Venezuela.

The mission of AES is to collaborate attending the world need of electricity.

Challenges faced before Engeman® implantation:

Besides the challenge of implantation, we had the challenge to structure and develop an automatism to generate maintenance indexes.

At Hydroelectric Plants, the performance of the installations is measured through two principal indicators: TF (Failure Rate) and Availability of Generation Unities. These indicators are monthly compared to their goals. This operation requires a number of controls and reports. AES Tietê created routines and procedures and, through software Engeman®, automated these data so they can be raised instantly in a safe and secure way.

How did Engeman® solved these challenges?

Engeman® solved this challenge with integrity with AES Tiete, where tools were developted in the system.

This Engeman® development job was hard, but we didn’t gave up until winning this challenge.

What was the time necessary to run Engeman®?

We spent 4 months to implant the system Engeman® at the 10 plants of AES Tiete.

To win the challenge of creating an automation routine of indicators we spent more than 3 months.

Economy estimated in time and costs obtained with Engeman® implementation:

We didn’t compute yet cost reduction and time values in maintenance. But the reliability in taking decisions for the execution of other maintenances and investments has raised a lot after the histories generated by Engeman®. That is absolutely bringing us economy.


We have a great relationship with Engeman® consulting. All of our pendency is now treated and solved, including changed in the system structure. Engeman EAM Ltda has a strong culture of client attendance.

Sérgio Longuinho - Maintenance Head