Plejades

What Plejades does

Plejades GmbH is a privately held German strategic consulting firm founded in 2000 in Griesheim, operating at the interface between technical consulting and management consulting for clients in environmental protection, mining, nuclear safety, energy, water, and waste management. The firm maintains wholly-owned subsidiaries in Freiberg (mining and remediation), Bielefeld (economic consultancy), and Sofia, Bulgaria (legal and economic advisory for Southeast Europe), plus representative offices in Brussels (EU institutional access) and Tokyo (Japanese nuclear regulator proximity). Service delivery is project-based, executed through competitive tenders for government ministries, regulatory authorities, and inter-governmental organizations, frequently funded by EU, World Bank, KfW, and GIZ mechanisms.

The company's core technical offerings include environmental site investigation and remediation (including mechano-chemical destruction of PCBs/dioxins and in-situ POP remediation), mining sector closure and long-term hazard prevention, nuclear facility decommissioning and radioactive waste management (with management systems aligned to IAEA GS-R-3), energy and water infrastructure modernization, and economic/financial analyses including macro-econometric modeling and privatization advisory. Notable engagements include the EU co-funded Mining Waste Cadastre for the Republic of Serbia (2017-2020, in consortium with DMT GmbH), Chernobyl conversion advisory for Ukrainian authorities, orphan radiation source securing for Kosovo, and radiation protection consulting for the Japanese Nuclear Regulatory Authority.

Plejades generates revenue through project-based professional services engagements priced per engagement, with no public pricing tiers or rate cards disclosed. Its customer base is overwhelmingly governmental and public-administrative, including national ministries (Mining and Energy, Environmental regulators), regional authorities (Saxony-Anhalt Mining Authority), and supranational bodies (EU Delegations, World Bank). The firm employs a multilingual expert team with native-level proficiency in German, English, French, Bulgarian, Russian, and Japanese, enabling delivery across more than a dozen countries in Europe, the Middle East, East Asia, South America, and Africa. Proprietary technology is concentrated in physical-chemical remediation methods rather than digital or AI-driven platforms.

Name

Plejades

Legal name

PLEJADES GmbH

Website

https://pleja.de

Company type

Private

Founded year

2000

Operating status

Operating

Headcount range

11–50 employees

Short description

Plejades GmbH is a privately held German strategic consulting firm founded in 2000 that delivers technical and management consulting in environmental remediation, mining closure, nuclear safety, and energy infrastructure for government ministries, regulators, and inter-governmental donors across Europe, Asia, and Africa.

Ownership category

akta.pro rank

Product category

Environmental and Engineering Consulting Services

NAICS

Environmental Consulting Services (54162), Environmental Consulting Services (541620), Other Management Consulting Services (541618), Management Consulting Services (54161), Other Scientific and Technical Consulting Services (54169)

SIC

Services-Management Consulting Services (8742), Services-Commercial Physical & Biological Research (8731)

akta.pro primary industry

Program & Project Management (PMO) Consulting (BPAHACAL)

akta.pro secondary industries

Mineral Processing Plant Design & EPCM (Flowsheet Development, Piloting & Scale-up) (IMAKALAK), Project & Program Management (PMO), Controls & Reporting (EUAKAAAC), Water, Wastewater & Hydraulics Engineering Consulting (BPAHAIAD), Humanitarian-Development-Peace Nexus & Resilience Programming (BPADAEAK)

Keywords

• Environmental consulting services
• Mining site remediation
• Nuclear safety advisory
• Radiation protection services
• Waste management consulting

Headquarters

HQ city

Griesheim

HQ country

Germany

HQ region

Europe

Offices8 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Strategic Management Consulting: Project-based consulting engagements for governments, public administrations, and private sector clients in specialized environmental, mining, radiation protection, and energy sectors. Projects include site remediation, mining closure, nuclear decommissioning, and infrastructure development advisory services.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

Plejades is a strategic consulting firm of independent experts delivering project-based advisory services at the interface of technical and management consulting. Its core offering covers environmental site investigation and remediation, mining sector services (closure, mine water management, long-term safe custody), radiation protection and nuclear safety (decommissioning, radioactive waste management), energy/water/waste sector modernization, economic and legal consulting, and innovation/R&D project development for governments, public authorities, and industrial clients.

Product overview

Plejades GmbH is a strategic consulting company composed of independent experts operating at the interface between technical consulting and management consulting. The company operates as a network of offices in Germany (Griesheim headquarters, Freiberg, Bielefeld) and Bulgaria (Sofia), with representative offices in Brussels and Tokyo. The service portfolio comprises six core consulting areas: Environmental Management and Site Remediation, Mining Sector Services, Radiation Protection and Nuclear Safety, Energy/Water/Waste Services, Economic and Legal Consultancy, and Innovation Services. The different office locations specialize in different aspects of this unified consulting offering, with Freiberg focused on mining and remediation, Bielefeld on economic consultancy, Sofia on economic and legal services for Southeast Europe, and Griesheim serving as the main coordination hub.

Differentiator

Problem solved

Functional benefit

Products and services

• Environmental Management and Site Remediation Consulting services for site investigation, assessment, and remediation of contaminated sites, including historical research, environmental monitoring, Due Diligence Audits, and in-situ remediation for persistent organic pollutants. Targeted at governments and industrial clients needing environmental remediation.
• Mining Sector Services Expert services for mining operations including environmental assessment, remediation concepts, closure of mining sites, mine water management, and long-term safe custody of mine facilities and tailings. Targeted at mining authorities, mining operators, and government agencies overseeing mining sites.
• Radiation Protection and Nuclear Safety Expert services for nuclear facility decommissioning, dismantling, radioactive waste management, radioecology, NORM assessment, and implementation of IAEA-based management systems. Targeted at nuclear regulatory authorities, governments with nuclear programs, and industrial operators of nuclear facilities.
• Energy, Water and Waste Services Technical consulting for energy sector modernization, water supply privatization, wastewater treatment, and solid waste management sector analysis and restructuring. Targeted at governments, public utilities, and development agencies undertaking infrastructure modernization.
• Economic and Legal Consultancy Financial analysis, macro-econometric modeling, tariff studies, privatization consulting, and legal advisory services for public infrastructure projects. Targeted at governments, utilities, and development agencies in transition and emerging economies.
• Innovation Services R&D project development, technology development, and know-how transfer including new remediation technologies, dismantling technologies, and new materials development such as Carbon Nanohorns (CNH) and CNH-plastics. Targeted at research institutions, public agencies, and industrial clients seeking applied environmental R&D.

Quantifiable outcome

• Successful completion of Mining Waste Cadastre project for Republic of Serbia (2017-2020)
• +1 more outcomes

Named customers7 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

One partnership is on record.

• DMT GmbH & Co. KGcoreStrategic or Co-development Partner · 1 January 2017Consortium partnership for the Mining Waste Cadastre project for the Republic of Serbia (2017-2020). The three-year project was carried out by the Republic of Serbia's Ministry of Mining and Energy in cooperation with the Delegation of the European Union in the Republic of Serbia.

Scale indicators2 records

Recent moves9 records

Expansion highlights6 records

Direct peers

• Trischler und Partner GmbH:
• SLR Consulting: Global environmental and advisory consultancy with strong mining closure, radiation protection, and EIA capabilities — directly overlapping Plejades' six service pillars. Comparable in size profile (mid-size, partner-led) and in serving mining and infrastructure clients internationally.
• DMT GmbH & Co. KG: German engineering consultancy specializing in mining, resources engineering, and decommissioning. DMT was Plejades' consortium partner on the 2017–2020 Mining Waste Cadastre project for Serbia's Ministry of Mining and Energy, and is the most directly comparable German firm by service mix and donor-funded project experience.

Broad incumbents

• WSP Global: Global engineering professional services firm following the Parsons Brinckerhoff and Wood E&I acquisitions, with a large environment and earth/water practice. Competes with Plejades in mining closure, contaminated site remediation, and donor-funded infrastructure advisory.
• Wood Group (John Wood Group): UK-headquartered global engineering and consulting firm with environmental, nuclear decommissioning, and mining practices. A direct competitor for Plejades' radiation-protection and decommissioning work, especially on European nuclear phase-out mandates.
• Tetra Tech: US-headquartered consulting and engineering firm with a leadership position in water, environment, and sustainable infrastructure for international development finance institutions (World Bank, USAID, ADB). A natural competitor for the donor-funded, water-and-environment segment of Plejades' book of business.
• ARCADIS NV: Global design, engineering, and environmental consultancy with deep mining remediation, brownfield redevelopment, and nuclear decommissioning practices. Several Plejades senior staff (Matthias Bock, Bernd Bräutigam, Ivan Stocker) are ARCADIS alumni, making it a direct talent competitor and the natural "go-big" alternative for Plejades' mining-closure clients.
• ERM (Environmental Resources Management): Global pure-play environmental, health, safety, and sustainability consultancy. Competes with Plejades for environmental site assessment, remediation, and due-diligence mandates from large multinational and international-finance clients, though at significantly larger scale.
• Ramboll Group: Danish-headquartered engineering, consulting, and project management firm with a strong environmental, water, and energy practice. Competes with Plejades on European environmental and water-sector consulting, including EU-funded infrastructure and Just Transition work.
• GHD Group: Australian employee-owned engineering, environmental, and advisory firm with growing European and mining practices. Competes with Plejades on mining closure, contaminated land, and water-sector consulting for government and donor clients.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/plejades-gmbh---independent-experts

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Subsidiaries3 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 Plejades