Alltec and Siemens Energy: 25 years of partnership
Alltec received Siemens Energy’s Supplier Performance award, recognition built over 25 years of partnership, project after project.
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Engineering and manufacturing since 1995
Control cabinets for substations from 34.5 kV to 800 kV
We design and manufacture control cabinets for power transformers and shunt reactors, as well as transfer cubicles, with an in-house engineering team, for customers in Brazil and around the world.
Alltec by the numbers
- 1995Year founded
- 800+Projects completed
- 4,000+Control cabinets manufactured
- 15+Countries with Alltec solutions
About us
With three decades of experience, we specialize in the design and manufacture of substation control cabinets. Every product is engineered to the end customer’s technical specification and the applicable standards.
Partnerships with internationally recognized manufacturers let us offer a wide range of solutions, including transformer and shunt reactor control cabinets, common cubicles, and transformer transfer cubicles, among other specialized solutions.
Our commitment to quality is unwavering. We work to ensure that every cabinet is delivered to a high standard, balancing high performance with competitive cost.
With a well-structured import and export department, we serve customers in Brazil and abroad and have delivered Alltec solutions to more than 15 countries.
30+years in business
What we do
Control cabinets and cubicles for substations
We design and assemble control cabinets for transformers and shunt reactors, as well as common and transfer cubicles.
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Transformer control cabinets
We design and manufacture control cabinets for 34.5 kV to 800 kV transformers for Siemens Energy, Hitachi Energy, TSEA Energia, and GE Vernova — Grid Solutions, among others.
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Shunt reactor control cabinets
Control, protection, and monitoring cabinets for medium- and high-power shunt reactors, such as the ones we supply for Siemens Energy’s 500 kV shunt reactors at the APS Cholla – Delaney Substation in Arizona.
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Control cabinets for export
Control cabinets built to UL 508A, CSA C22.2, and IEC 61439 and to each end customer’s own standards, with our solutions present in more than 15 countries. Pictured: a power transformer control cabinet for end customer Entergy in the U.S.
Learn more -
Common and transfer cubicles
Common cubicles, also called transfer cubicles, shared by a bank of single-phase units (transformers or shunt reactors) and used to switch the spare unit into service in place of the failed unit.
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Electrical design
An in-house, EPLAN-certified engineering team for the electrical design of control cabinets and cubicles.
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Spark Gap CT protector
We manufacture the Spark Gap A046, which protects the secondaries of up to 5 CTs from the overvoltage caused when the circuit is opened by mistake.
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Transfer cubicles
Engineered for safe changeover to the spare unit
With a functional layout and sound engineering practice, we offer a range of transfer cubicle configurations for switching a substation’s spare unit into service.
Utility standards
International utility standards
With more than 30 years in business, we have refined our ability to deliver tailored solutions to demanding customers in international markets.
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New York Power Authority (NYPA)
The largest state public power organization in the U.S., for which we supply control cabinets built to its technical requirements.
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Bechtel
We have supplied infrastructure that complies with the stringent standards of U.S.-based Bechtel for global energy projects.
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Bonneville Power Administration (BPA)
We provide solutions that meet BPA’s standards for hydroelectric power management in the U.S. Pacific Northwest.
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Hydro-Québec
We fully meet Hydro-Québec’s demanding standards for hydroelectric power in Canada.
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Duke Energy
We provide solutions that follow the standards of Duke Energy in the U.S., with a focus on innovation and sustainability.
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Pacific Gas and Electric (PG&E)
We meet PG&E’s standards, ensuring reliability on high-voltage networks in California.
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Entergy
We have supplied transformer control cabinets that meet Entergy’s stringent standards in the southern U.S. states.
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Florida Power & Light (FPL)
We design custom transformer control cabinets that follow the high standards of FPL in the U.S., with a focus on energy efficiency.
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Georgia Power
We deliver control cabinet engineering solutions aligned with the high quality standards of Georgia Power in the U.S.
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Dow
An American chemical multinational for which we supply control panel designs that meet its demanding safety and reliability specifications.
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Eversource
New England’s largest energy delivery company, for which we design and supply control cabinet solutions, always in compliance with its standards.
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FirstEnergy
An electric utility operating in several U.S. states, where our control cabinets have contributed to grid modernization.
Brazilian utility standards
Through our customers, we meet the standards of Brazil’s major transmission and distribution utilities. The standards of the companies below are part of our everyday design work.
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ISA CTEEP
We meet the CTEEP standard on projects such as the Bandeirantes, Miguel Reale, Remo, Lorena, Bom Jardim, Ramon Rebert, Água Vermelha, and São Caetano do Sul substations.
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CPFL Energia
We meet the CPFL standard on projects such as the Dallas, Vila Maria, and Porto Alegre substations in Brazil.
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Neoenergia
We meet the Neoenergia standard, as we did for Brazil’s ANEEL transmission auction Lots 2, 4, and 9.
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Furnas
We know Furnas’s requirements in depth from projects such as the Campinas, Ibiúna, Itaberá, Mascarenhas, and Grajaú substations.
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Chesf
We meet the Chesf standard, as demonstrated by our successful delivery for the Milagres substation.
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CYMI
Dunas, Mantiqueira, and Lot 13 are some of the CYMI projects we have supplied through our partners.
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Amazonas Energia
Through partnerships with companies in Brazil’s North region, we fully meet Amazonas Energia’s requirements.
References
In service in Brazil and around the world.
Supplier Performance award at Siemens Energy’s Conecta 2026, after 25 years of partnership.
Recent projects
| Location | Year |
|---|---|
| Anhanguera Substation São Paulo, SP, Brazil 2 × 500 MVA, 230 kV phase-shifting transformers | 2026in progress |
| Itaberá Substation Itaberá, SP, Brazil 3 × 120 Mvar shunt reactors and a common cubicle | 2026in progress |
| Tijuco Preto Substation Mogi das Cruzes, SP, Brazil 3 × 120 Mvar shunt reactors and a common cubicle | 2026in progress |
| Pernambuco, Brazil 3 × 25/33.3 MVA transformers and 1 grounding transformer | 2026in progress |
| Delta Blues Advanced Power Station Greenville, MS, U.S. 19 transformers, 420 and 600 MVA | 2026in progress |
| Vicksburg Advanced Power Station Vicksburg, MS, U.S. 3 transformers, 420 and 600 MVA | 2026in progress |
| Lone Star Power Station San Jacinto County, TX, U.S. 1 × 600 MVA transformer | 2026in progress |
| Hot Spring Energy Facility Malvern, AR, U.S. 2 transformers, 420 and 600 MVA | 2026in progress |
| Jefferson Power Station Jefferson County, AR, U.S. 2 transformers, 420 and 600 MVA | 2026in progress |
| Waterford 5 Power Station Taft, LA, U.S. 11 transformers, 420 and 600 MVA | 2026in progress |
| Sun Valley Substation Maricopa County, AZ, U.S. 6 × 600 MVA, 525 kV transformers | 2026in progress |
| Mullin Creek #1 Generating Station Nodaway County, MO, U.S. 3 × 600 MVA transformers | 2026in progress |
| Viola Generating Station Sumner County, KS, U.S. 850 MVA transformers | 2026in progress |
| McNew Generating Station Reno County, KS, U.S. 850 MVA transformers | 2026in progress |
| Alberta, Canada 4 × 400 MVA transformers | 2026in progress |
| Barra II Substation Barra, BA, Brazil 1 × 300 MVA transformer | 2026 |
| Jussiape Substation Jussiape, BA, Brazil 4 shunt reactors and a common cubicle | 2026 |
| Camaçari IV Substation Camaçari, BA, Brazil Common transfer cubicle for a shunt reactor bank | 2026 |
| Tabatinga 2 Substation Brazil 1 × 10/12.5 MVA, 36.2 kV transformer | 2026 |
| Rio Grande do Sul, Brazil 2 transformers, 20/26 and 26 MVA | 2026 |
| Hulha Negra Substation Hulha Negra, RS, Brazil 1 × 15/18.75 MVA, 72.5 kV transformer | 2026 |
| Villa Faguense (Frederico Westphalen 3) Substation Frederico Westphalen, RS, Brazil 2 × 10/12.5 MVA, 72.5 kV transformers | 2026 |
| Promissão area, SP, Brazil 2 × 20/26 MVA, 145 kV transformers | 2026 |
| Rio de Janeiro State, Brazil 1 × 15/20 MVA, 145 kV transformer | 2026 |
| Roraima, Brazil 7 transformers, 0.75/1.25 to 10 MVA | 2026 |
| Audubon Substation Ascension Parish, LA, U.S. 17 × 400 MVA transformers | 2026 |
| Commodore Substation Iberville Parish, LA, U.S. 1 × 400 MVA transformer | 2026 |
| Churchill Substation Jefferson Parish, LA, U.S. 7 × 400 MVA transformers | 2026 |
| Running Bear Substation Montgomery County, TX, U.S. 4 × 400 MVA transformers | 2026 |
| Cypress and Legend Substations Hardin and Jefferson Counties, TX, U.S. 4 × 400 MVA transformers | 2026 |
| Golf Substation U.S. 7 × 400 MVA transformers | 2026 |
| Redhawk Substation Arlington, AZ, U.S. 2 × 600 MVA transformers | 2026 |
| Cholla Power Plant Joseph City, AZ, U.S. 4 × 41.67 Mvar, 525 kV single-phase shunt reactors | 2026 |
| Path2Zero complex Fort Saskatchewan, AB, Canada 12 transformers, 100, 150, and 175 MVA | 2026 |
| Fluvanna Substation Scottsville, VA, U.S. 1 × 495 MVA transformer | 2026 |
| São Caetano do Sul Substation São Caetano do Sul, SP, Brazil 3 × 400 MVA transformers | 2025 |
| Janaúba Substation Janaúba, MG, Brazil 13 transformers and 78.33 Mvar shunt reactors | 2025 |
| Presidente Juscelino Substation Presidente Juscelino, MG, Brazil 78.33 Mvar shunt reactors | 2025 |
| Morro do Chapéu II Substation Morro do Chapéu, BA, Brazil Shunt reactors and common cubicles | 2025 |
| Poções III Substation Poções, BA, Brazil Shunt reactors and common cubicles | 2025 |
| Medeiros Neto II Substation Medeiros Neto, BA, Brazil 4 × 100 MVA transformers and shunt reactors | 2025 |
| João Neiva 2 Substation João Neiva, ES, Brazil 4 × 350 MVA transformers and shunt reactors | 2025 |
| Ponta Grossa Substation Ponta Grossa, PR, Brazil 10 × 224 MVA transformers and shunt reactors | 2025 |
| São Gonçalo do Pará Substation São Gonçalo do Pará, MG, Brazil Shunt reactors and common cubicles | 2025 |
| Buritizeiro 3 Substation Buritizeiro, MG, Brazil Shunt reactors and common cubicles | 2025 |
| São Gotardo 2 Substation São Gotardo, MG, Brazil Shunt reactors and common cubicles | 2025 |
| Lagos Substation Macaé, RJ, Brazil 3 shunt reactors and a common cubicle | 2025 |
| Mato Grosso, Brazil 1 × 10 MVA transformer with on-load tap changer | 2025 |
| Mato Grosso do Sul, Tocantins, and Acre, Brazil 3 × 3 MVA, 34.5/13.8 kV transformers | 2025 |
| Amazonas, Brazil 4 transformers, 5 and 26.6 MVA | 2025 |
| Minas Gerais, Brazil 2 × 2.5 MVA transformers | 2025 |
| Bahia, Brazil 3 transformers, 5/6.25 and 10/12.5 MVA | 2025 |
| Panther Grove II Wind Farm Livingston County, IL, U.S. 2 × 315 MVA, 345 kV transformers | 2025 |
| Canal Generating Station Sandwich, MA, U.S. 1 × 450 MVA transformer | 2025 |
| Ivaiporã Substation Manoel Ribas, PR, Brazil Shunt reactors and common cubicles | 2024 |
| Arinos 2 Substation Arinos, MG, Brazil Shunt reactors and common cubicles | 2024 |
| Paracatu 4 Substation Paracatu, MG, Brazil Shunt reactors and common cubicles | 2024 |
| Nova Ponte 3 Substation Nova Ponte, MG, Brazil Shunt reactors and common cubicles | 2024 |
| Poços de Caldas Substation Poços de Caldas, MG, Brazil 4 × 200 MVA transformers and a common cubicle | 2024 |
| Gentio do Ouro II Substation Gentio do Ouro, BA, Brazil 3 × 300 MVA transformers and a common cubicle | 2024 |
| Fontes Nova Hydroelectric Plant Piraí, RJ, Brazil 1 × 5/6.25 MVA transformer | 2024 |
| Pará, Brazil 2 transformers, 1.25 and 5 MVA | 2024 |
| Combined-cycle power plant Scottsville, VA, U.S. 1 × 495 MVA universal spare transformer | 2024 |
| North Kingstown Substation North Kingstown, RI, U.S. 2 × 480 MVA transformers | 2024 |
| Orange County Advanced Power Station Bridge City, TX, U.S. 3 GSUs, 537 and 542 MVA, and 1 × 500 MVA autotransformer | 2024 |
| Bayou LaButte Substation Plaquemine, LA, U.S. 4 × 400 MVA transformers | 2024 |
| Melbourne Substation Fulton County, OH, U.S. 3 × 448 MVA, 345 kV transformers | 2024 |
| Springdale Generating Station Springdale, PA, U.S. 1 transformer | 2024 |
| Ironwood Generating Station South Lebanon, PA, U.S. 1 transformer | 2024 |
| Hummel Station Shamokin Dam, PA, U.S. 1 transformer | 2024 |
| DeMoss Petrie Substation Tucson, AZ, U.S. 2 transformers | 2024 |
| Magnolia Power Generating Station Iberville Parish, LA, U.S. 1 × 868 MVA transformer | 2024 |
| Ramon Rebert Filho Substation São Paulo, SP, Brazil 3 × 133.33 MVA transformers and a common cubicle | 2023 |
| Água Vermelha Substation Iturama, MG, Brazil 4 × 100 MVA transformers | 2023 |
| Estreito Substation Ibiraci, MG, Brazil 3 × 340 MVA transformers | 2023 |
| Viana Substation Viana, ES, Brazil 3 × 22 Mvar shunt reactors and a common cubicle | 2023 |
| Vitória Substation ES, Brazil 4 × 22 Mvar shunt reactors and a common cubicle | 2023 |
| Assu Sol Solar Plant Açu, RN, Brazil 3 × 290 MVA transformers | 2023 |
| Jaguaruana II Substation Jaguaruana, CE, Brazil Single-phase transformers and shunt reactors | 2023 |
| Pacatuba Substation Pacatuba, CE, Brazil Single-phase transformers and shunt reactors | 2023 |
| Açu III Substation Açu, RN, Brazil Single-phase shunt reactors | 2023 |
| Bogalusa Substation Bogalusa, LA, U.S. 1 × 400 MVA transformer | 2023 |
| STAMP Substation Alabama, NY, U.S. 2 × 600 MVA transformers | 2023 |
| Sun Ba Power Plant Shanshang, Tainan, Taiwan 3 transformers, 430 and 440 MVA | 2023 |
| Miguel Reale Substation São Paulo, SP, Brazil 3 × 133.33 MVA transformers and a common cubicle | 2022 |
| Monte Alegre de Minas 2 Substation Monte Alegre de Minas, MG, Brazil 7 × 66.67 MVA transformers | 2022 |
| Nova Ponte Substation Nova Ponte, MG, Brazil 7 × 100 MVA transformers | 2022 |
| Uberlândia 10 Substation Uberlândia, MG, Brazil Transformers | 2022 |
| Araxá 3 Substation Araxá, MG, Brazil Transformers | 2022 |
| Caxias Norte Substation Caxias do Sul, RS, Brazil 13 transformers and 3 common cubicles | 2022 |
| Morgan Substation Peoria area, AZ, U.S. 1 × 600 MVA transformer | 2022 |
| Fern Road Substation Shasta County, CA, U.S. 2 × 264.5 MVA transformers and 1 spare unit | 2022 |
| Orchard Substation Fresno County, CA, U.S. 2 × 424 MVA transformers and 1 spare unit | 2022 |
| Plaquemine petrochemical complex Plaquemine, LA, U.S. 2 × 120 MVA transformers, stainless-steel cabinets | 2022 |
| Salto Grande Hydroelectric Complex Uruguay 4 single-phase shunt reactors and a common cubicle | 2022 |
| João Pessoa II Substation João Pessoa, PB, Brazil 6 transformers and 4 shunt reactors | 2021 |
| Capivari do Sul Substation Capivari do Sul, RS, Brazil 9 transformers, 100 and 224 MVA, and 11 shunt reactors | 2021 |
| Guaíba 3 Substation Guaíba, RS, Brazil 4 shunt reactors and a common cubicle | 2021 |
| Rio das Éguas Substation Correntina, BA, Brazil 7 single-phase transformers and 2 common cubicles | 2021 |
| Rio Formoso II Substation Jaborandi, BA, Brazil 2 three-phase transformers | 2021 |
| Oriximiná Substation Oriximiná, PA, Brazil 7 transformers and 2 common cubicles | 2021 |
| Bom Jardim Substation Jundiaí, SP, Brazil 2 transformers | 2021 |
| Independence Steam Electric Station Newark, AR, U.S. 1 × 800 MVA, 500 kV transformer | 2021 |
| Villa Hayes Substation Villa Hayes, Paraguay 8 × 26.7 Mvar shunt reactors and 2 common cubicles | 2021 |
| Governador Valadares 6 Substation Governador Valadares, MG, Brazil 7 × 200 MVA transformers and shunt reactors | 2020 |
| Mutum Substation Mutum, MG, Brazil Shunt reactors | 2020 |
| Itabira 5 Substation Itabira, MG, Brazil Shunt reactors | 2020 |
| Padre Paraíso 2 Substation Padre Paraíso, MG, Brazil 50 Mvar shunt reactor and transfer cubicle | 2020 |
| Rio Novo do Sul Substation Rio Novo do Sul, ES, Brazil 4 × 350 MVA transformers and a common cubicle | 2020 |
| Mesquita Substation MG, Brazil 33.3 Mvar shunt reactors | 2020 |
| Vila Maria Substation Vila Maria, RS, Brazil 2 × 150 MVA transformers | 2020 |
| Porto Alegre 1 Substation Porto Alegre, RS, Brazil 3 × 83 MVA transformers | 2020 |
| Dallas Substation Paulínia, SP, Brazil 2 × 100 MVA transformers | 2020 |
| Alta Paulista Substation Flórida Paulista, SP, Brazil 7 × 133.3 MVA transformers and 2 common cubicles | 2020 |
| Parnaíba III Substation Parnaíba, PI, Brazil 2 × 150 MVA transformers | 2020 |
| Lençóis Paulista pulp mill Lençóis Paulista, SP, Brazil 3 × 140 MVA GSU transformers | 2020 |
| Santivañez Substation Santivañez, Cochabamba, Bolivia 7 × 150 MVA transformers and 4 shunt reactors | 2020 |
| Baguaçu Substation SP, Brazil 7 × 100 MVA transformers and 2 common cubicles | 2019 |
End-customer standards we have built to
Brazil
ISA CTEEP
CPFL Energia
Neoenergia
Furnas
Chesf
CYMI
Amazonas Energia- Eletronorte
- Eletrosul
Eletronuclear
Cemig
CEEE
Celesc
CESP
AES Eletropaulo
Light
Engie
Taesa
Alupar- TBE
State Grid
Equatorial
CELG
Energisa- Roraima Energia
Sterlite Power
Elecnor- Isolux
Abengoa
Cobra
Statkraft- Matrinchã Transmissora
- Brasnorte
Jirau Energia
Petrobras
Transpetro
Vale
Gerdau
CSN
Usiminas
Votorantim
Braskem
Klabin
Suzano
Bracell
Novelis
Stihl
CPTM
Cosanpa
Copasa
Caramuru
Amazon Aço
Certel
Creluz- Coopersul
Cerpro
United States
NYPA
Bechtel
BPA
Duke Energy
PG&E
Entergy
FPL
Georgia Power
Dow
Eversource
FirstEnergy
APS
SDG&E
Xcel Energy
Progress Energy
MidAmerican Energy- Conectiv
CenterPoint Energy
Tucson Electric Power
Republic Steel
Tenaska
LS Power
Kiewit
Black & Veatch
Savion
CIP
Evergy
Canada
Hydro-Québec
BC Hydro
AltaLink
Mexico
CFE
Dominican Republic
ETED
Venezuela
- Enelven
Colombia
ISAGEN
EPM
CENS
ESSA- Hocol
Bolivia
ENDE
Paraguay
ANDE
Uruguay
Salto Grande
Argentina
Transener- TermoAndes
Chile
Colbún
Codelco- Electroandina
Spain
Red Eléctrica
Taiwan
CTCI
Components from
SEL
GE Vernova
Electroswitch
ASCO
Siemens
Schneider Electric
Phoenix Contact
Weidmüller
Rittal
Finder
Kraus & Naimer
Marathon Special Products
Allied Wire & Cable
Plimel
Advanced in-house engineering
From design to structural analysis, every cabinet is modeled, simulated, and analyzed before it reaches the shop floor.
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Design
With in-house engineering and technical staff.
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Modeling and wiring
With predetermined routing and connections.
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Thermal study
With simulation and calculation report.
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Structural
Calculated by finite element analysis.
Silent looping animation in four steps: first the cabinet’s wiring diagram, drawn in light blue on a dark background and scanned from top to bottom; then the cabinet in 3D, its parts coming together and, in X-ray view, the wires growing terminal to terminal; next, particles colored from blue (cooler air) to red (warmer) show the air moving inside it; finally, the enclosure with its door open flexes (exaggerated), colored from blue (least displacement) to red (most).
*Real simulation from a real project.
Codes and standards
We comply with Brazilian and international standards, including:
- ABNT NBR IEC 61439
- UL 508A
- CSA C22.2
This is how we ensure the quality and safety of our low-voltage control cabinets.
Factory
Engineered here. Built here.
Full control of the manufacturing process.
Factory footage: the camera moves through finished cabinets, inside — terminal blocks, circuit breakers, relays, and transfer connectors on orange mounting plates — and ends at the workbench, with hands wiring a plate.
Alltec Insights
Delivered projects, technical articles, and Alltec news.
New order for Transformadores Itaipu/Coopersul: 15/18.75 MVA, 72.5 kV
Alltec has started manufacturing new transformer control cabinets for Transformadores Itaipu, built for 15/18.75 MVA, 72.5 kV power transformers bound for Coopersul and equipped with Schweitzer SEL-2414 and SEL-2505 relays.
Read more
New delivery on the radar: Siemens Energy & APS Cholla – Delaney Substation, 500 kV shunt reactors
Alltec supplies the control, protection, and monitoring cabinets for Siemens Energy’s 500 kV shunt reactors at APS’s Cholla – Delaney Substation in the Arizona desert.
Read moreContact
Contact us
For more information, questions, or suggestions, fill out the form below.
- Address
- Avenida Dr. Wady Badra, 246
Distrito Industrial — Jundiaí/SP
Brazil
Open in Google Maps (opens in a new tab) - [email protected]
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