OPERATIONS
05.28.2026
The people who make it: Franciane
"Am I ready to lead?" That was the question Franciane Porto Sant'Ana asked herself when she was still working as a Technician I at Cotesa.
0GW
UNDER O&M IN SOLAR
AND WIND GENERATION
AND WIND GENERATION
0GW
IN HYDROPOWER
GENERATION
GENERATION
0KM
OF TRANSMISSION LINES
HIGH AND EXTRA-HIGH VOLTAGE
HIGH AND EXTRA-HIGH VOLTAGE
0
SUBSTATIONS CONNECTED
TO THE NATIONAL GRID
TO THE NATIONAL GRID
0+DF
BRAZILIAN STATES
WHERE WE OPERATE
WHERE WE OPERATE
INTEGRATED SOLUTIONS FOR THE POWER SECTOR
01
POWER
GENERATION
SOLAR · WIND · HYDRO
Full O&M for solar, wind and hydropower plants, focused on availability.
EXPLORE SOLUTION
02
POWER
TRANSMISSION
LINES · SUBSTATIONS · LIVE-LINE WORK
Operation and maintenance of high and extra-high voltage lines and substations, up to 600 kV.
EXPLORE SOLUTION
03
ENERGY-INTENSIVE
CONSUMERS
INDUSTRY · HIGH DEMAND
Reliable power for energy-intensive industrial plants and critical infrastructure.
EXPLORE SOLUTION
04
MANAGEMENT & ADMIN
(G&A)
PRODUCTISED BACK OFFICE
Finance, HR, procurement and IT structured for power sector assets.
EXPLORE SOLUTION
05
SPECIAL
SERVICES
SHORT TERM · ON DEMAND
Commissioning, inspections and specialised interventions, wherever the sector needs them.
EXPLORE SOLUTION
NEW · DATA CENTERS & CRITICAL POWER
POWER TO SUSTAIN THE
POWER TO SUSTAIN THE
DIGITAL INFRASTRUCTURE OF THE FUTURE
O&M of substations and dedicated connections for critical loads. The data center cannot stop, so COTESA keeps it running.
OUR CLIENTS
For nearly three decades, COTESA has operated and maintained energy assets for transmission companies, power generators and energy-intensive consumers across Brazil, from utilities with assets in several states to large industrial plants connected to the National Interconnected System.
These are long-term relationships, built contract by contract on safety, availability and transparency.
WHY COTESA
COTESA Engenharia specialises in Operation & Maintenance engineering for power generation and transmission assets. We invest in technology, innovation and knowledge, and were one of the first companies in Brazil to perform live-line maintenance.
PIONEER
LIVE-LINE WORK UP TO 765 KV
Maintenance with the system energised, without taking the asset offline.
REAL TIME
24/7 OPERATIONS CENTER
Hotline connection to the grid operator’s regional centers across Brazil.
CERTIFICATIONS
TRIPLE ISO BY BUREAU VERITAS
Certified quality, environmental and occupational safety management.
GLOBAL SCALE
VINCI / CYMI GROUP
World leader in concessions, energy and construction, present in 120 countries.
A STRATEGIC
PARTNER TO THE
POWER SECTOR
COTESA Engenharia works every day to be the power sector’s best partner, combining technical excellence with environmental and social responsibility and the highest safety standards in everything we deliver.
I WANT TO KNOW MORECOTESA CORPORATE VIDEO
NEWS FROM THE POWER SECTOR
OPERATIONS
05.28.2026
The people who make it: Catíele
We don't always choose a career. Sometimes it finds us. That is what happened to Catiele Ferrari.
GENERAL
05.28.2026
The hidden cost of downtime
At Cotesa, predictability reduces risk, controls impact and prevents unplanned outages.
FREQUENTLY ASKED QUESTIONS
Straight answers on O&M in the power sector, written for people and for AI search.
It is maintenance carried out with the circuit energised, without interrupting supply. It requires certified crews, strict procedures and specialised equipment. COTESA pioneered the technique in Brazil and performs live-line work at voltages up to 765 kV.
Accredited operating agents with their own control center and crews certified in the grid operator’s network procedures. COTESA runs a 24/7 System Operations Center with a hotline to the operator’s regional centers, representing its clients before the authority.
Data centers are critical loads: they require uninterrupted supply, redundancy and immediate response to incidents. That calls for specialised O&M of substations and dedicated connections, an area where COTESA already serves major digital infrastructure operators in Brazil.
It is the set of Operation and Maintenance services that secures the availability, performance and service life of power plants, transmission lines and substations. It covers real-time operation, predictive, preventive and corrective maintenance, and engineering support to the asset owner.
ENVIRONMENTAL, SOCIAL
AND GOVERNANCE COMMITMENT
E
ENVIRONMENTAL
ISO 14001:2015
Certified environmental management, pollution prevention and proper disposal of waste generated in our processes.
LEARN MORES
CAREERS
ISO 45001:2018
Health, safety and career development, with care for our crews and communities and a record of zero fatal accidents.
LEARN MOREG
GOVERNANCE
VINCI / CYMI STANDARD
Leadership, board and integrity: see the corporate governance structure of COTESA and its controlling group.
LEARN MORE
VINCI GROUP
GLOBAL REACH, BRAZILIAN OPERATIONS
SINCE 1997
JOINED THE GROUP IN 2024
PRESENT IN 120 COUNTRIES
WHAT CAN COTESA DO FOR YOUR OPERATION?
Talk to our team. We have 3 shared-services regional hubs across Brazil, ready to support your operation.