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Stm Alta Tensión, S.A.U

The company maintains high- and low-voltage electrical systems and associated equipment.

Repair and Maintenance
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Headquarters
Basauri, Bizkaia, SpainSource: RevenueBaseRetrieved October 13, 2026
Employee range
51 to 200Source: RevenueBaseRetrieved October 13, 2026
Founded
1990Source: RevenueBaseRetrieved October 13, 2026
Published list appearances
40 supported appearances ↗Source: RevenueBase lists
The company at a glance

What does Stm Alta Tensión, S.A.U do?

Its stated work includes very-low-frequency cable tests, withstand-voltage tests, step and touch measurements, and dielectric-fluid testing and treatment. It conducts energy-efficiency, lighting, and thermographic studies, and provides occupational-risk-prevention training applied to electrical hazards.

Based on the company’s public LinkedIn information, supplied through RevenueBase.

What the business offers

Services & capabilities.

Electrical system maintenance

Maintenance covers high- and low-voltage systems, power transformers, protection relays, AT/BT switches, measuring equipment, and switchgear.

Source: LinkedIn company description · Retrieved October 13, 2026

Electrical testing

Services include VLF cable tests, withstand-voltage tests, step and touch measurements, and dielectric-fluid testing and treatment.

Source: LinkedIn company description · Retrieved October 13, 2026

Explore the business in context

Company lists.

Supported appearances on published RevenueBase lists, including available memberships beyond displayed rankings.

Positions describe ordering within each source list. See how lists are built ↗

Share your recognition

Embeddable award for your website

BADGE PREVIEWStm Alta Tensión, S.A.U listed #2 on Power equipment diagnostics providers, September 19, 2026Open the published source list.
Stm Alta Tensión, S.A.U

#2 Power equipment diagnostics providers

Snapshot: September 19, 2026

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Company information

Sources & data notes.

RevenueBase prepared this profile from the company’s public LinkedIn information and RevenueBase company data. These source records were retrieved on October 13, 2026. AI helped summarize these sources, with a separate automated check against the source text completed on November 3, 2026. Directory positions use company-contact counts from separate saved list snapshots dated September 15, 2026, September 16, 2026, September 18, 2026, September 19, 2026, September 21, 2026, September 27, 2026, September 29, 2026, October 10, 2026 and October 11, 2026. How the company lists are built.

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