Efacec

Efacec is listed as a transformer manufacturer in Arroteia, Porto, Portugal. Products and scope on file: power transformers, distribution transformers, dry-type and cast-resin transformers and reactors. Sourced figures on file: highest sourced voltage 400 kV; indicative capacity ~60,000 MVA/year. These are the highest sourced values, not an audited company maximum. Reported standards on file: IEC.

🇵🇹 Portugal · Arroteia, Porto · Listed · Official website ↗

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Independent census profile, not the company website. How this census is compiled. Last reviewed 2026-08-28 · Profile status Listed

Directory Completeness Score

85% Complete

Data Provenance: Official Manufacturer Source

Last reviewed: 2026-08-28

Pending technical specifications: Headquarters address · Test bay specifications & utility references

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Capabilities

Power Distribution Dry-type SR

Indicative capability data

Indicative sourced capacity / yr	~60,000 MVA (sourced figure — not independently audited)
Highest sourced voltage evidence	400 kV
Product types	power, distribution
Regions served	Europe, Africa
Reported standards	IEC
Source	EFACEC Corporate Sustainability & Annual Filing ℹ

These are the highest sourced figures on file — they are not asserted as the company maximum unless an authoritative source states that. Voltage summary is MAX(accepted voltage evidence records, tier filing). Annual capacity and voltage evidence are independent values and are never combined into a single product rating. Verify against the manufacturer before a procurement decision.

Sourced specifications

Maximum voltage stated	525 kV. source checked 2026-10-15 Shell Up to 1500 MVA and 525 kV (BIL 1675 kV) Core Up to 350 MVA and 525 kV (BIL 1675 kV)
MVA	up to 1500 MVA. source checked 2026-10-15 Shell Up to 1500 MVA and 525 kV (BIL 1675 kV)

Only figures quoted from the linked page are shown. A missing line means that field has no public source on file.

Related components

Transformer bushings On-load tap changers Cooling systems Insulation materials Protection & monitoring Oil & preservation Conductors & core steel

Relevant applications

Utilities & Grid HVDC & Converters Renewable Energy Data Centres Railways & Metro

Markets

Portugal manufacturers Arroteia, Porto

Confirmed manufacturing facilities

Where an independent source documents a transformer manufacturing plant, it is catalogued here with its verified facility ID and source attribution. Factory capability is separate from the company group maximum and is never inferred from it.

Arroteia, Porto, Portugal

Latest intelligence about this company

No published intelligence evidenced as about this company. Curated Daily Intel is refreshed at build — see Daily Intel for the latest feed.

Upcoming events

INMR World Congress 2027 7 Nov 2027 · Algarve, Portugal

Last reviewed: 2026-08-28.

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