Horstmann & Schwarz
Horstmann & Schwarz GmbH & Co. KG supplies, rents, and services medium- and low-voltage transformer stations, transformers, and switchgear for energy-intensive industrial companies, construction sites, municipalities, and infrastructure projects in Germany and 20+ other countries.
- Company typePrivate
- Founded1950
- HeadquartersMettmann, Germany
- Headcount11–50
- GTM typeB2B
- OfferingServices
Horstmann & Schwarz firmographics
Firmographics- Name
- Horstmann & Schwarz
- Legal name
- Horstmann & Schwarz GmbH & Co. KG
- Website
- https://horstmann-schwarz.de
- Company type
- Private
- Founded year
- 1950
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Horstmann & Schwarz GmbH & Co. KG supplies, rents, and services medium- and low-voltage transformer stations, transformers, and switchgear for energy-intensive industrial companies, construction sites, municipalities, and infrastructure projects in Germany and 20+ other countries.
- Ownership category
- akta.pro rank
Horstmann & Schwarz industry classification
Industry- Product category
- Electrical Power Distribution Services
- NAICS
- Power, Distribution, and Specialty Transformer Manufacturing (335311), Switchgear and Switchboard Apparatus Manufacturing (335313), Other Commercial and Industrial Machinery and Equipment Rental and Leasing (532490)
- SIC
- Switchgear & Switchboard Apparatus (3613), Power, Distribution & Specialty Transformers (3612), Services-Miscellaneous Equipment Rental & Leasing (7350)
- akta.pro primary industry
- Transformers (Power, Distribution, Instrument, Specialty) (IMAGAAAA)
- akta.pro secondary industries
- Switchgear & Switchboards (HV/MV/LV, GIS/AIS) (IMAGAAAB), Low-Voltage Switchboards & Panelboards (LV distribution panels, MCCs, switchboards) (IMAGAEAA)
Keywords
Where Horstmann & Schwarz is headquartered
LocationHeadquarters
- HQ city
- Mettmann
- HQ country
- Germany
- HQ region
- Europe
Offices1 record
Markets served
Horstmann & Schwarz business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Supply Chain, Operations, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Transformer Station Rental: Short and medium-term rental of transformer stations, transformers, and switchgear. With over 250 own rental stations, the company is one of the largest rental providers in Germany. Rental stations are suitable for construction sites, events, temporary power supply, and bridging until permanent sales stations are delivered. Flexible termination rental agreements available.
- Transformer Station and Equipment Sales: Sale of transformer stations, transformers, and switchgear for permanent power supply from medium voltage networks. Includes new construction, modernization, and conversion projects. Used/reconditioned equipment also available. Manufacturer-independent consulting focuses on customer needs regardless of technical, business, or delivery time reasons.
- Financing and Leasing Services: Arrangement of financing, leasing, or installment plans through financial partners for purchase of transformer stations and equipment.
- Maintenance and Service: Ongoing maintenance services for transformer stations, switchgear, and electrical equipment including regular inspections per DGUV regulations, oil sampling, measurements, commissioning, and the optional HS-360 comprehensive service package covering consulting, planning, transport, assembly, maintenance, and 24/7 emergency service.
- Professional Disposal Services: Professional disposal of transformers and electrical equipment including proper handling of insulation media such as mineral oil, SF6, MIDDEL, and PCB-containing equipment, evidenced by disposal certificates.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Pay-as-you-go | Rental stations available in various configurations |
| One time/ perpetual license | Multi-year contract | Purchase of transformer stations and equipment |
| Subscription | Multi-year contract | Financing, lease-purchase, and leasing options |
| Subscription | Annual | HS-360 comprehensive service package |
Go-to-market motion1 record
Distribution channels3 records
Marketing channels5 records
Horstmann & Schwarz product offering
Product offeringCore offering
Horstmann & Schwarz is an electrical engineering company that provides medium and low voltage power distribution solutions, primarily transformer stations, transformers, and switchgear, offered through rental (short/medium-term), sale (purchase/financing), and a full suite of lifecycle services including consulting, planning, maintenance, disposal, and 24/7 emergency response.
Product overview
Horstmann & Schwarz is an electrical engineering company offering a portfolio of products and services centered on power supply infrastructure for low and medium voltage applications. The core product line comprises transformer stations in three form factors (compact non-walk-in up to 2,500 kVA, walk-in container/concrete up to 4,000 kVA, and indoor building installations), paired with transformers (cast resin and oil types) and switchgear (medium voltage air/SF6 insulated and low voltage). The portfolio also includes the proprietary HS-DUCT modular pressure relief system as a safety add-on for arc fault protection, and a range of special solutions for tunnels, photovoltaic plants, and sea freight. Services span the full lifecycle including consulting and planning, rental (with over 250 own stations), purchase/financing/leasing, maintenance and service, disposal, and a 24/7 emergency service, all optionally bundled under the HS-360 service package.
Differentiator
Problem solved
Functional benefit
Brands
- HS-DUCT: Modular pressure relief duct system for medium-voltage switchgear providing arc fault protection (Triple Safety Relief) for people, equipment, and buildings. Developed with Siemens and BlueGIS, tested to IEC62271-200/202 IAC A/B standards. Website: hs-duct.de
Products and services
- Transformer Stations Transformer stations converting medium-voltage (typically 10 kV or 20 kV) into low-voltage (400V) for end-user distribution, offered as compact non-walk-in stations up to 2,500 kVA, walk-in container or concrete stations up to 4,000 kVA, or indoor installations for buildings, sold to industrial and commercial customers.
- Transformers (Cast Resin and Oil) Cast resin (dry-type, low fire load, for buildings/public spaces) and oil (robust, lower noise, for difficult climatic conditions) transformers converting medium voltage to low voltage (400V), supplied to industrial and commercial customers.
- Switchgear (Medium and Low Voltage) Medium-voltage switchgear (10 kV and 20 kV, air or SF6 insulated) and low-voltage switchgear (630 A to 6300 A, arc fault tested) enabling safe, reliable, and efficient power distribution for industrial customers.
- Rental Transformer Stations Short- and medium-term rental of transformer stations, transformers, and switchgear with over 250 own rental stations available. Includes flexible termination rental agreements, 24/7 emergency service, and plant operator responsibility per DIN VDE 0105-100.
- Transformer Station Purchase, Financing & Leasing Sale of transformer stations, transformers, and switchgear with manufacturer-independent consulting. Offers purchase, lease-purchase, financing, and leasing options through reputable partners, including reconditioned used equipment.
- HS-DUCT Pressure Discharge System Modular pressure relief duct system for medium-voltage switchgear tested and certified by IPH Berlin. Provides triple safety in arc fault events by safely conducting hot and toxic gases out of the switchgear room, available as 1-, 2-, or 3-bay base units with pipe exit system via ceiling or wall.
- Special Solutions Custom transformer station solutions for special use cases including tunnel installations, photovoltaic plants, extreme climatic conditions with sunshield roof, and sea freight-ready containers for long transport routes.
- HS-360 Service Package Optional 360-degree service package covering rental or sales stations, including statutory 4-year maintenance. Covers consulting and planning, transport and assembly, regular inspection and maintenance per DGUV, dismantling and return transport, 24/7 emergency service, and individually agreed response times.
- Maintenance & Service Maintenance and service for transformer stations, switchgear, and electrical equipment including transformers, circuit breakers, current and voltage transformers, isolators, capacitors, and cables. Includes oil sampling and laboratory analysis, DGUV V3 inspections, and comprehensive measurements.
- Disposal of Transformer Stations Professional disposal of transformers and electrical equipment with proof of disposal. Handles insulation media including mineral oil, SF6, MIDDEL, and PCB-containing equipment through certified disposal partners, with in-house PCB oil sampling analysis.
- 24/7 Emergency Service 24 hours a day, 365 days a year emergency breakdown service with large spare parts warehouse. Reachable via free hotline 0800-HORSTMANN (0800-467786266). Assumes plant operator responsibility per DIN VDE 0105-100 for rental stations.
- Consulting & Planning Individual consulting and planning for transformer stations, transformers, and low/medium voltage switchgear. Includes optimization of investment costs, clarification of technical connection conditions with energy suppliers, network analysis, and approval planning documentation with current CAD software.
Quantifiable outcome
- Transformer loss reduction from 14.78 kW to 8.29 kW per 1,000kVA unit (approximately 44% reduction), resulting in significant energy savings over 20-year operating period at 60-70% continuous load.
- +2 more outcomes
Companies that use Horstmann & Schwarz
Customer profileNamed customers4 records
Segments4 records
Ideal customer profiles4 records
Horstmann & Schwarz technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Horstmann & Schwarz partnerships and signals
Strategic signalPartnerships
Ten partnerships are on record, tiered core and minor.
- Kautz Starkstrom-Anlagen GmbHcoreLow-voltage switchgear partner providing custom-designed low-voltage switchgear (630A to 6300A) with arc fault testing and MODUL-K-SYSTEM family for safe, reliable power distribution. Also provides ARC-K-SYSTEM arc fault quenching system and earthquake-tested equipment for worldwide delivery.
- OrmazabalcoreMedium-voltage switchgear supplier. The company supplies SF6-insulated, 7-field Ormazabal switchgear systems for transformer station installations, including compliance with DIN VDE-AR-N 4110 standards.
- Bloedorn SpeditionminorTransport and logistics partner for equipment shipping and delivery.
- Spedition WeissminorTransport and logistics partner for transformer station delivery.
- H&N Energien GmbHminorEnergy solutions partner providing temporary cable connections (Leihkabel) for rental station installations during customer conversions and upgrades.
- Osterkamp MetallbauminorMetal construction partner for transformer station components and enclosures.
- AEP BraunminorElectrical equipment and solutions partner.
- Hochschule Ruhr WestminorUniversity partnership for research, development, and technical expertise in electrical engineering.
- IPH BerlincoreTesting and certification partner. IPH Berlin tested and certified the HS-DUCT modular pressure discharge system as the world's first system under IEC62271-200/202 IAC A/B standards in their high-power test field.
- SiemenscoreTechnology development partner for the HS-DUCT pressure discharge system, developed in collaboration with Siemens and the BlueGIS switchgear generation for SF6-free medium-voltage switchgear applications.
Scale indicators4 records
Recent moves6 records
Expansion highlights5 records
Horstmann & Schwarz competitors and assessment
Company assessmentBroad incumbents
- Schneider Electric: Broad electrical equipment manufacturer with significant MV switchgear and transformer offerings serving industrial, infrastructure, and data center customers. Overlaps in target customers and switchgear/transformer products but operates as a full-line global player.
- Atlas Copco Power: Global power and flow equipment rental business, including temporary power distribution solutions for industrial and construction customers. Comparable on the rental-led GTM and short/medium-term deployment model.
- Hitachi Energy: Specialist in power transformers, grid equipment, and switchgear — direct competitor in the transformer and substation product category. Significantly larger scale and global footprint than Horstmann & Schwarz.
- ABB: Global manufacturer of MV/LV switchgear, transformers, and protection & control equipment, and a named supplier partner of Horstmann & Schwarz. Competes across the same industrial power distribution value chain but with a much broader product portfolio.
- Siemens: Major manufacturer of medium-voltage switchgear (BlueGIS), transformers, and complete transformer stations — and the named co-development partner for HS-DUCT. Overlaps heavily with Horstmann & Schwarz's product portfolio but operates at massive scale across many other industrial segments.
- Eaton: Power management manufacturer with a strong LV and MV switchgear portfolio serving industrial and commercial customers. Comparable on the LV distribution panel side of Horstmann & Schwarz's offering.
Direct peers
- Ormazabal (Velatia): Spanish-headquartered specialist in MV switchgear (SF6 and SF6-free) for utilities and industrial customers. A current supplier to Horstmann & Schwarz and the most direct competing product-line peer for transformer station projects.
- SGB-SMIT: European transformer manufacturer specializing in power and distribution transformers for utilities and industry. Direct product overlap with Horstmann & Schwarz's transformer offering, though SGB-SMIT is a pure manufacturer rather than a system integrator with a rental fleet.
- Aggreko: Global leader in temporary power solutions, including large-scale rental of transformers and switchgear for industrial, events, and utility customers. Directly comparable to Horstmann & Schwarz's rental-led GTM and rapid-deployment model, though at vastly larger scale.
- Kautz Starkstrom-Anlagen: German specialist in custom low-voltage switchgear and arc fault protection systems (including ARC-K-SYSTEM and MODUL-K-SYSTEM). Current supplier-partner of Horstmann & Schwarz and a directly comparable niche specialist in the LV switchgear market.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat5 records
Key risks5 records
Key highlights7 records
Customer concentration
Horstmann & Schwarz social profiles
Digital presenceHorstmann & Schwarz compliance and trust
Trust signalCompliance2 records
Horstmann & Schwarz financial estimates
Financial estimateRevenue estimate
Valuation estimate
Horstmann & Schwarz leadership team
Management profileNumber of profiles
Profiles6 records
Horstmann & Schwarz subsidiaries and ownership
Company hierarchySubsidiaries1 record
Horstmann & Schwarz funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Horstmann & Schwarz M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Horstmann & Schwarz
What does Horstmann & Schwarz do?
Horstmann & Schwarz is an electrical engineering company that provides medium and low voltage power distribution solutions, primarily transformer stations, transformers, and switchgear, offered through rental (short/medium-term), sale (purchase/financing), and a full suite of lifecycle services including consulting, planning, maintenance, disposal, and 24/7 emergency response.
Is Horstmann & Schwarz a public or private company?
Horstmann & Schwarz is a private company. It is classified as family owned and is currently operating.
When was Horstmann & Schwarz founded?
Horstmann & Schwarz was founded in 1950. It employs 11 to 50 people.
Where is Horstmann & Schwarz based?
Horstmann & Schwarz is headquartered in Mettmann, Germany, in the Europe region.
How does Horstmann & Schwarz make money?
Five revenue lines are on record. Transformer Station Rental is the primary driver. The others are transformer Station and Equipment Sales, financing and Leasing Services, maintenance and Service and professional Disposal Services.
Who are Horstmann & Schwarz's main competitors?
Broad incumbents on record are Schneider Electric, Atlas Copco Power, Hitachi Energy, ABB, Siemens and Eaton. Direct peers are Ormazabal (Velatia), SGB-SMIT, Aggreko and Kautz Starkstrom-Anlagen.
Does Horstmann & Schwarz have an API?
No public API is recorded for Horstmann & Schwarz.
What industry is Horstmann & Schwarz in?
Horstmann & Schwarz's product category is Electrical Power Distribution Services. Its primary akta.pro industry code is IMAGAAAA, Transformers (Power, Distribution, Instrument, Specialty), with a secondary code of IMAGAAAB, Switchgear & Switchboards (HV/MV/LV, GIS/AIS). Its NAICS code is 335311 and its SIC code is 3613.