Tesar

What Tesar does

Tesar is a privately held Italian manufacturer of cast-resin transformers, founded in 1979 and headquartered in Subbiano, Italy. The company operates with a workforce of 51-100 employees and focuses on the design, production, and supply of dry-type cast-resin distribution and power transformers, an electromechanical product category in which the transformer windings are encapsulated in epoxy resin under vacuum pressure. This construction eliminates oil as a cooling and insulating medium, making the equipment suitable for indoor and environmentally sensitive installations, fire-risk zones, and applications such as hospitals, data centers, commercial buildings, renewable energy interconnections, and industrial plants.

The underlying technology is mature and specification-driven: cast-resin units compete on thermal class (typically F or H), partial-discharge performance, short-circuit withstand, noise level, and type-tested compliance with IEC/EN standards. Tesar's business model is project- and specification-based capital equipment sales, with revenue generated through unit sales of engineered-to-order transformers to utilities, EPC contractors, and industrial end-users. The company's web presence is hosted under the-rsgroup.com domain, indicating affiliation with a larger European transformer manufacturing group that likely provides distribution, sourcing, and possibly cross-portfolio integration.

No public revenue, funding, product portfolio detail, management information, or recent strategic activity is disclosed in the available source material. The available data is limited to firmographic identifiers, leaving pricing mechanics, channel structure, geographic mix, and competitive positioning largely uncharacterized.

Name

Tesar

Website

https://tesar.eu

Company type

Private

Founded year

1979

Headcount range

51–100 employees

Short description

Tesar is a privately held Italian manufacturer of cast-resin transformers, founded in 1979 in Subbiano. The company designs and produces dry-type epoxy-encapsulated transformers for utilities, industrial facilities, and infrastructure applications across European markets.

Ownership category

akta.pro rank

Product category

Electrical Transformers

NAICS

Power, Distribution, and Specialty Transformer Manufacturing (335311)

SIC

Power, Distribution & Specialty Transformers (3612), Electronic Coils, Transformers & Other Inductors (3677)

akta.pro primary industry

Transformers (Power, Distribution, Instrument, Specialty) (IMAGAAAA)

akta.pro secondary industries

Power Transformers, Reactors & Auxiliary Power Systems (EUADACAJ), Medium-Voltage Distribution Components (MV breakers, disconnects, reclosers, MV terminations & joints) (IMAGAEAL), Instrument Transformers (CTs/VTs) & Sensors (Conventional/Optical) (EUADACAG)

Keywords

• Cast-resin transformers
• Dry-type transformers
• Electrical transformers
• Power distribution equipment
• Transformer manufacturing

Headquarters

HQ city

Subbiano

HQ country

Italy

HQ region

Europe

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales

Core offering

Tesar manufactures cast-resin (dry-type) transformers, which are electrical devices used for voltage transformation in power distribution systems. The company produces these transformers for industrial, commercial, and utility applications where fire-safe, low-maintenance, and environmentally robust transformer solutions are required.

Differentiator

Problem solved

Functional benefit

Products and services

• Cast-resin transformers

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Recent moves1 record

Expansion highlights1 record

Broad incumbents

• ABB: Diversified electrification and automation giant with a substantial transformer portfolio across voltage classes. Competes for similar utility and industrial customers as Tesar, though as one of many product lines.
• Legrand: Global specialist in electrical and digital building infrastructure with transformer offerings for commercial and industrial applications. Adjacent competitor with broader product portfolio.
• Eaton: Global electrical equipment manufacturer with a significant dry-type transformer business serving commercial, industrial, and data center customers. Overlaps with Tesar in cast-resin and distribution segments.
• GE Vernova: Large-scale power equipment manufacturer with significant transformer operations serving utilities and industrial customers. Competes in adjacent segments to Tesar's distribution and specialty transformer focus.
• Schneider Electric: Broad-line electrical equipment manufacturer with significant transformer offerings including dry-type/cast-resin units. Competes across similar customer segments but as part of a much wider portfolio.

Direct peers

• Hitachi Energy: Global leader in transformers, including dry-type and cast-resin units for utility and industrial customers. Direct competitor across multiple voltage classes and geographies where Tesar competes.
• Siemens Energy: Major transformer OEM offering power and distribution transformers including cast-resin variants. Competes for European utility and industrial orders against Tesar.
• SGB-SMIT: European transformer specialist focused on power and distribution transformers with manufacturing in Germany and other EU countries. Highly comparable in scale and product focus to Tesar.
• TMC Transformers: Italian transformer manufacturer producing cast-resin and specialty units for European customers. Geographic and product overlap makes it one of the closest direct comparables to Tesar.

Regional players

• Wilson Transformer Company: Australian-based transformer manufacturer producing power and distribution units including dry-type variants. Comparable in scale and product focus to Tesar but operating in a different primary geography (Asia-Pacific vs. Europe).

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks5 records

Key highlights5 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Tesar