What Mostalplc does

Mostostal Płock S.A. is a publicly listed Polish mechanical engineering and industrial construction firm founded in 1962/1963 and headquartered in Płock, Poland (WSE: MSP). The company is a controlled subsidiary of Mostostal Warszawa S.A., which holds 48.69% of shares and 53.21% of voting rights within the Mostostal Warszawa Capital Group. Mostostal Płock specializes in the design, prefabrication, and erection of large-capacity vertical storage tanks (up to 100,000 m³ each) and specialized steel industrial installations for the Oil&Gas, chemical, energy, and food industries, leveraging 63 years of operating history, in-house production facilities, qualified welding personnel, and certifications including ISO 9001, ISO 14001, PN-EN 1090, PN-EN 45001, and NATO AQAP 2110.

The company's revenue model is project-based industrial construction services, executed under competitive bidding (przetargi) primarily for enterprise clients and frequently delivered in consortium with parent Mostostal Warszawa. Pricing is contract-by-contract unit pricing on multi-year frameworks, with recent headline contracts ranging from PLN 16.45 million (AGAT S.A.) to PLN 210.5 million net (Koluszki/Nowa Wieś Wielka/Dębogórze fuel base). The customer base is concentrated: PERN S.A. represents 43.9% of revenue and Orlen S.A. represents 43.6%, with a geographic mix concentrated in the Polish provinces of Mazovia (46.2%), Pomerania (42.2%), West Pomerania (8.5%), and Silesia (0.2%), plus a modest Czech Republic exposure via Metrostav DIZ. Five service lines — storage tanks, industrial installations and welding, own-production fabrication, workshop services, and crane rental — share underlying capacity.

FY2025 revenue reached PLN 169,427 thousand (+48.4% YoY from PLN 114,132 thousand in 2024), with net profit of PLN 2,037 thousand versus a PLN 6,355 thousand loss in 2024 and gross margin of approximately 8.9%. The Group employs 1,535 people. Recent strategic emphasis is on completing the leadership refresh (Robert Kowalski as President since May 2025, Adrian Kaczmarczyk added August 2025), diversifying beyond the PERN/Orlen core (AGAT, KB Pomorze, Baltchem contracts), and securing incremental revolving credit capacity with Bank Pekao (PLN 26M multi-purpose facility) and Bank Millennium (new PLN 2.5M line signed March 2026).

Name

Mostalplc

Legal name

Mostostal Płock S.A.

Website

https://mostostal-plock.pl

Company type

Public

Founded year

1962

Operating status

Operating

Headcount range

251–500 employees

Short description

Mostostal Płock S.A. is a publicly listed Polish mechanical engineering firm (WSE: MSP) that designs, prefabricates, and erects large-capacity vertical storage tanks and specialized steel industrial installations for enterprise clients in the Oil&Gas, chemical, energy, and food industries, primarily serving PERN S.A. and Orlen S.A. in Poland.

Ownership category

akta.pro rank

Headquarters

HQ city

Plock

HQ country

Poland

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Construction and Assembly Services: Primary revenue stream from construction and assembly services for industrial projects, including storage tanks, petrochemical installations, and modernization work. Revenue is project-based with long-term contracts. In 2025, production revenue reached 169,427 thousand PLN.
2. Industrial Installation Services: Specialized mechanical construction services including prefabrication and assembly of industrial installations for the petrochemical and fuel sectors.
3. Modernization and Renovation: Modernization and renovation of petrochemical installations, including projects that improve operational parameters.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Mostostal Płock S.A. is a specialized mechanical engineering and industrial construction company that designs, fabricates, and erects large-capacity vertical storage tanks, industrial steel installations, and complex prefabricated structures for the Oil&Gas, chemical, energy, and food industries in Poland. The company also provides mechanical workshop services and crane rental supporting heavy industrial construction projects. Primary customers are major enterprise operators including PERN S.A. and Orlen S.A., with contracts typically won through competitive public tenders and executed in consortium with parent Mostostal Warszawa S.A.

Product overview

Mostostal Płock is a specialized industrial construction company offering a unified portfolio of mechanical engineering services primarily for the Oil&Gas sector, as well as chemical, energy, and food industries. The company's core offerings center on five interconnected service lines: Storage Tanks (zbiorniki magazynowe) — the primary specialization involving design, fabrication, and erection of large-capacity vertical storage tanks for petroleum products and fuels; Industrial Installations (instalacje przemysłowe) — specialized steel structures and welding services; Own Production (własna produkcja) — in-house fabrication capabilities for complex steel constructions; Workshop Services (usługi warsztatowe) — mechanical workshop support; and Crane Rental (wynajem dźwigów) — heavy lifting equipment for construction projects. The company operates as a general contractor and consortium partner, frequently collaborating with Mostostal Warszawa on major infrastructure projects for clients such as PERN, Orlen, and Baltchem.

Differentiator

Problem solved

Functional benefit

Products and services

• Storage Tanks (Zbiorniki magazynowe) Storage tanks constitute one of the main elements of the company's specialization, including applied assembly technologies and welding technologies using modern welding equipment. The company constructs vertical storage tanks with reinforced concrete shells, double-wall designs, and floating roofs for petroleum products, crude oil, and fuel storage.
• Industrial Installations (Instalacje przemysłowe) Industrial installations and welding services providing the capability to execute specialized steel structures and steel structures forming part of larger projects. The production plant offers fabrication of complex steel constructions for external clients and as part of technical assistance.
• Own Production / Prefabrication (Własna produkcja) In-house manufacturing capabilities providing complexity and diversity of completed facilities as a source of experience and competence. Reference letters from investors and supervising foreign specialists confirm the company's execution capabilities.
• Workshop Services (Usługi warsztatowe) Workshop services supporting the company's core industrial construction activities, providing specialized mechanical workshop capabilities.
• Crane Rental (Wynajem dźwigów) Crane rental services for heavy lifting operations required in industrial construction and storage tank installation projects.

Quantifiable outcome

• Completed Dębogórze expansion ahead of schedule, increasing capacity by 150,000 m3
• +3 more outcomes

Named customers7 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Seven partnerships are on record, tiered core, minor and major.

• Mostostal Warszawa S.A.coreStrategic or Co-development PartnerParent company controlling Mostostal Płock S.A. Mostostal Warszawa S.A. holds 48.69% of shares and 53.21% of votes. Companies operate in consortium for major infrastructure projects, particularly for PERN S.A. contracts. Mostostal Płock functions as partner in consortium arrangements with Mostostal Warszawa as consortium leader.
• Mostostal KielceminorOthersPart of the Capital Group (Grupa Kapitałowa) alongside Mostostal Płock and Mostostal Warszawa.
• AMK KrakówminorOthersPart of the Capital Group (Grupa Kapitałowa) alongside Mostostal Płock and Mostostal Warszawa.
• PERN S.A.coreStrategic or Co-development PartnerPrimary client for storage tank construction projects. Long-standing cooperation with consortium of Mostostal Płock and Mostostal Warszawa. Major projects include Gdańsk terminal (142.95 mln PLN), Dębogórze expansion (147.7 mln PLN), Koluszkach/Nowa Wieś Wielka/Dębogórze project (210.5 mln PLN), and Boronów/Rejowiec project (132.5 mln PLN). Together, 15 tanks have been constructed for PERN.
• KPMG Audyt Sp. z o.o. Sp. k.minorOthersExternal auditor for annual financial statements, half-year reports, and consolidated package. Selected for 2025 and 2026 financial years audit.
• Spec-Rem S.A.majorStrategic or Co-development PartnerConsortium partner for modernization of Asphalt installation at Orlen S.A. main plant in Płock. Contract value 246,800 thousand PLN net (Mostostal Płock share approximately 40%). Also partnered for KKII cooling tower replacement (6,150 thousand PLN).
• BPR ASE Group Sp. z o.o.majorStrategic or Co-development PartnerConsortium partner for modernization of Asphalt installation at Orlen S.A. main plant in Płock.

Scale indicators13 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Mostostal Warszawa S.A. Parent company and consortium leader that co-bids the largest Polish industrial construction tenders with Mostostal Płock. Operates in the same mechanical construction, steel structure, and oil & gas infrastructure space, sharing resources and references within the Capital Group.
• Matrix Service Company: US-listed contractor specializing in storage tank construction and repair for the oil, gas, and chemicals sectors. Most direct functional peer by product (large welded storage tanks) though operating primarily in North America.
• Polimex Mostostal S.A. One of Poland's largest industrial construction groups, with a comparable portfolio of power, petrochemical, and steel-structure contracts. Closest publicly-traded peer by business mix and Polish market focus.
• ZUE S.A. Polish listed contractor focused on energy and rail infrastructure construction, including work for fuel and power operators. Comparable by customer type and project-based industrial construction model.
• Mostostal Zabrze S.A. Polish industrial steel construction specialist serving power, chemical, and metallurgy customers. Comparable in scale and offering set to Mostostal Płock's structural-steel and tank fabrication work.

Regional players

• Unibep S.A. Polish-listed contractor operating in industrial, modular, and infrastructure construction. Comparable by listed-Polish-contractor profile, though with limited overlap in large oil & gas tank work specifically.
• Erbud S.A. Polish-listed general contractor with industrial, energy, and public-infrastructure exposure. Comparable by market and project-based contracting model, though with a more diversified end-market mix.

Broad incumbents

• Budimex S.A. Poland's largest general construction group, active in infrastructure, energy, and industrial construction. Comparable Polish-market peer but at significantly larger scale and broader scope than Mostostal Płock's specialized tank focus.
• Worley Limited: Australian-listed global energy, chemicals, and resources project services and EPC provider. Comparable as a broad incumbent in oil & gas industrial construction, though substantially larger and globally diversified.
• Bilfinger SE: German-listed industrial services provider serving process industry customers (refining, chemicals, energy) with maintenance, construction, and tank-related services. Comparable offering set but at much larger scale and broader geographic footprint.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/mostostalplock

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

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 Mostalplc