What Insulation Technology Group does

Insulation Technology Group (ITG) is a Frankfurt am Main–headquartered international holding company that manufactures high-voltage (HV) and medium-voltage (MV) electrical porcelain insulators for power transmission and distribution infrastructure. The company operates through three legacy global brands—LAPP Insulators, PPC Insulators, and Cerisol—producing station post insulators, long rod insulators, and precipitator insulators designed for substation, overhead transmission line, and precipitator applications at system voltages up to 1,200 kV AC and 1,100 kV DC. ITG serves Transmission System Operators (TSOs), electric utilities, contractors, and electrical equipment distributors, offering both standardized catalog products and tailor-made engineered solutions supported by R&D and application engineering. The portfolio rests on proprietary ceramic-materials technology, including Resistive Graded (RG) semiconductive glaze technology (with over 40 years of field service history), an optimized Generation II long rod design, RTV silicone coating, and C-130 high-alumina porcelain formulations that achieve up to 40% weight reduction relative to standard porcelain. Manufacturing is conducted across eight plants in Germany, Poland, Romania, Slovakia, Portugal, the United States, and Brazil, with regional commercial affiliate offices in Houston and Shanghai.

ITG's revenue model is built on hardware sales of standardized and custom-engineered porcelain insulators, with quote-based pricing determined by voltage rating, mechanical strength class, creepage distance, and customization requirements. The company goes to market primarily through direct enterprise field sales targeting utilities and TSOs, supplemented by a comprehensive content marketing platform (the Insulator Education Initiative), active participation in industry conferences such as CIGRE and IEEE PES T&D, and collaborative webinars with industry publications. The business model emphasizes long product lifecycles (50+ years), sustainability positioning (100% recyclability, low-carbon manufacturing), and total-cost-of-ownership arguments with quantified benefits such as 15% land requirement reduction and 36% backflashover reduction in compact Insulated Cross Arm line designs.

ITG is a portfolio company of private equity firm TJC LP, which has pursued a multi-brand roll-up strategy, with the February 2025 acquisition of Cerisol (founded 1912) representing the most recent consolidation move. The company employs 1,001–5,000 people globally and is led by Managing Directors Antoni Franco Grau and Matthias Hübner, with Markku Ruokanen serving as Group Quality and R&D Director.

Name

Insulation Technology Group

Legal name

Insulation Technology Group GmbH

Website

https://insulationtg.com

Company type

Private

Founded year

2023

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Insulation Technology Group manufactures high-voltage and medium-voltage electrical porcelain insulators through its brands LAPP, PPC, and Cerisol, serving utilities, TSOs, contractors, and distributors globally from eight manufacturing plants across Europe and the Americas.

Ownership category

akta.pro rank

Product category

Electrical Insulators (High-Voltage Power Transmission Equipment)

NAICS

Electrical Equipment Manufacturing (33531)

SIC

Electronic & Other Electrical Equipment (No Computer Equip) (3600)

akta.pro primary industry

Insulators (polymer, porcelain, glass; strings & line post) (EUADADAE)

Keywords

• High voltage insulators
• Electrical porcelain insulators
• Medium voltage insulators
• Transmission line insulators
• Substation porcelain insulators

Headquarters

HQ city

Frankfurt

HQ country

Germany

HQ region

Europe

Offices10 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Electrical Porcelain Insulator Sales: Revenue is generated through the manufacture and sale of high-voltage and medium-voltage electrical porcelain insulators to utilities, distributors, and contractors globally. The company offers both standardized product lines and custom/tailor-made insulation solutions. Products include long rod insulators, station post insulators, and precipitator insulators sold under LAPP Insulators, PPC Insulators, and Cerisol brands.

Go-to-market motion2 records

Distribution channels2 records

Marketing channels6 records

Core offering

Insulation Technology Group manufactures and sells high-voltage (HV) and medium-voltage (MV) electrical porcelain insulators for substations, overhead transmission lines, and precipitator applications through its three wholly owned brands LAPP Insulators, PPC Insulators, and Cerisol. The company produces both standardized catalog products and tailor-made custom insulator solutions in 8 manufacturing plants across Europe and the Americas, supporting system voltages up to 1,200 kV AC and 1,100 kV DC. Production spans isostatic and plastic/wet method processes with proprietary materials including RG semiconductive glaze, high-alumina C-130 porcelain, and RTV silicone coatings.

Product overview

Insulation Technology Group is an international holding company manufacturing HV and MV electrical porcelain insulators through three major global brands: LAPP Insulators, PPC Insulators, and Cerisol. PPC Insulators specializes in substation, overhead line, and precipitator applications up to 1,200 kV AC and 1,100 kV DC. LAPP Insulators serves as a leading high-voltage insulator manufacturer with unique solution-oriented products. Cerisol, acquired in February 2025, adds over a century of expertise in porcelain insulators for substations, transformers, and railway applications. The company also operates The Insulator Education Initiative, an educational platform providing resources to support engineers and technical teams in making informed insulator decisions. The portfolio is produced in 8 manufacturing plants across Europe, North and South America.

Differentiator

Problem solved

Functional benefit

Brands

• LAPP Insulators: Leading manufacturer and supplier of high-voltage insulators with unique and fascinating solutions. Part of ITG portfolio.
• PPC Insulators
• Cerisol

Products and services

• HV and MV Electrical Porcelain Insulators Full portfolio of high-voltage and medium-voltage electrical porcelain insulators manufactured in 8 plants, including station post insulators, long rod insulators, and precipitator insulators for substation, overhead transmission line, and precipitator applications. Designed for utilities, transmission system operators, contractors, and distributors globally.
• LAPP Insulators Brand Leading manufacturer and supplier of high-voltage porcelain insulators offering unique, solution-oriented products. Operates manufacturing plants in Wunsiedel (Germany), Jedlina-Zdrój (Poland), Turda (Romania), and Le Roy, New York (USA) and serves utilities, distributors, and contractors worldwide.
• PPC Insulators Brand Leading supplier of state-of-the-art electrical porcelain insulators for substation, overhead line, and precipitator applications, specializing in designs up to 1,200 kV AC and 1,100 kV DC. Operates manufacturing plants in Čáb (Slovakia) and Santana/Pedreira (Brazil), with commercial affiliates in Houston (USA) and Shanghai (China).
• Cerisol Brand Portuguese manufacturer of high-quality porcelain insulators for substations, transformers, and railway applications with over a century of expertise. Operates manufacturing plant in V.N. de Gaia, Portugal. Acquired by ITG in February 2025.

Quantifiable outcome

• 15% reduction in land/right-of-way requirements and 10% reduction in tower structure material costs with compact Insulated Cross Arm technology
• +4 more outcomes

Named customers2 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Scale indicators7 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Eaton Corporation: US-listed power management company with an Electrical Americas segment covering utility-grade equipment, including substation and transmission hardware. Competes with ITG for North American utility spend as part of broader project packages.
• Mersen S.A. French-listed electrical specialties group serving T&D and industrial markets with surge protection, power transfer, and related components. Adjacent competitor in substation electrical hardware sold into European utility customers.
• Hubbell Incorporated: US-listed diversified electrical products group whose Hubbell Power Systems unit offers HV insulators, arresters, and connectors to North American utilities. Overlaps with ITG via power systems hardware but competes only indirectly through broader portfolio offerings.
• Siemens Energy AG: Global energy and T&D player supplying HV equipment, grid solutions, and transmission systems. Bundles insulator specifications into larger substation contracts alongside ITG, especially in EMEA and the Americas.
• Hitachi Energy Ltd. Global T&D equipment giant supplying substations, transformers, and HV switchgear to utilities worldwide. Competes with ITG on large utility tenders where insulator selection is bundled into broader substation packages.
• GE Vernova: Independent GE spin-out covering power generation, grid solutions, and T&D equipment, including the legacy Sediver insulator business. Direct insulator product overlap through Sediver plus broader substation portfolio competing for utility procurement.

Direct peers

• Pfisterer SE: German-headquartered supplier of HV cable accessories, insulators, and overhead line equipment serving utilities and rail operators in Europe. Comparable in customer base (TSOs/utilities) and product overlap in substation insulation.
• NGK Insulators Ltd. Japan-based global leader in porcelain insulators for HV transmission and substations, including long rod and station post designs overlapping ITG's core SKU set. Most direct head-to-head competitor in utility-grade porcelain.
• Maclean Power Systems: US-based manufacturer of HV insulators, arresters, and T&D hardware distributed to North American utilities and contractors. Directly competes with LAPP/PPC porcelain lines on the same North American project pipelines.
• Tridelta Meidinger AG: German manufacturer of surge arresters and HV porcelain insulators for substations and overhead lines. Overlaps with ITG's long rod and station post ranges and serves the same European TSO buyer base.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubevimeo.com/itgedu
• LinkedInlinkedin.com/company/insulation-technology-group

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries12 records

Funding overview

Funding rounds

Investors

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

M&A1 record

Investments

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

Frequently asked questions about Insulation Technology Group