Green German Reengineering GmbH

What Green German Reengineering GmbH does

Green German Reengineering GmbH is a privately held, founder-led engineering and consulting firm headquartered in Heidelberg, Germany, founded in 2012 by Swen Henning. The company specializes in the decommissioning and dismantling (R\u00fcckbau) of nuclear facilities, providing end-to-end services that span the multi-year lifecycle of plant closure: project management and project leadership, decommissioning concepts, change management, permitting and supervision procedures, radiological measurement and clearance, process control and scheduling, nuclear waste disposal advisory, expert opinions, and training. Its primary customers are German and Swiss nuclear power plant operators, research reactor operators, nuclear waste management bodies (e.g., BGE), and regulatory authorities; named reference engagements include PreussenElektra (Kernkraftwerk Stade), FRM II, and BGE (Schachtanlage Asse II). Swen Henning serves as a publicly appointed and sworn expert (\u00f6.b.u.v. Sachverst\u00e4ndiger) for decommissioning and clearance measurement, a regulated statutory credential that anchors the firm's role in clearance documentation and technical authority work.

The company's underlying technology centers on two proprietary assets. First, DECONGreen is an award-winning, branded measurement procedure (1st place Umwelttechnikpreis Baden-W\u00fcrttemberg, 2017) used for radiometric characterization, in-situ gamma spectrometry, surface soil radiation determination, and clearance measurement documentation. Second, DOKOM 3.0 is a proprietary database platform with modules for logistics, fire protection cadastre (Brandschutzkataster), and pollutant cadastre (Schadstoffkataster), co-developed with Christoph Taszus and presented at KONTEC 2023. Service delivery is performed by an in-house team of approximately 40 experts, engineers, and physicists from 11 nationalities, organized into multiple required disciplines (project management, permitting, measurement, assessment, disposal). Green expanded into Switzerland through wholly-owned subsidiary Green Swiss GmbH (led by Andr\u00e9 Stocker) and relocated to a new KfW-40 certified sustainable headquarters in Heidelberg in March 2026. The company is bootstrapped, with no disclosed external funding, and is led by founder-CEO Swen Henning supported by prokurists Max H\u00fcttmeier and Kai Schmittberger.

Green operates as a B2B professional services firm on a project-based, quote-based pricing model. Revenue is generated through bespoke, multi-year engineering and consulting engagements billed against defined scopes of work; no public pricing exists. Go-to-market is exclusively direct enterprise engagement with nuclear operators, power companies, and regulatory bodies, supplemented by industry-event presence (KONTEC, ICOND, Kerntechnik, T\u00dcV symposia, THM Gie\u00dfen radiometric seminars) and content marketing via blog and social media. There are no resellers or indirect channels. Customer acquisition rests on direct relationships, professional reputation, and the firm's statutory expert appointments. The firm has no AI/ML product surface; its technology differentiation is built on measurement methodology and documentation tooling rather than machine learning.

Name

Green German Reengineering GmbH

Legal name

GREEN German Reengineering GmbH

Website

https://green-hd.de

Company type

Private

Founded year

2012

Operating status

Operating

Headcount range

1–10 employees

Short description

Green German Reengineering GmbH is a Heidelberg-based engineering and consulting firm specializing in the decommissioning and clearance of nuclear facilities, serving German and Swiss operators, research reactors, and regulatory authorities with proprietary measurement procedures and project-based professional services.

Ownership category

akta.pro rank

Product category

Nuclear Decommissioning Engineering Services

NAICS

Remediation Services (56291), Engineering Services (541330), Environmental Consulting Services (541620), Environmental Consulting Services (54162)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Decontamination & Dismantling (D&D) of Nuclear Facilities (EUAKAFAB)

akta.pro secondary industries

Decommissioning Program Management, Engineering & Regulatory Closure (EUAKAFAA), Nuclear Plant Decommissioning & Site Restoration (EUACADAJ)

Keywords

• Nuclear decommissioning services
• Radiological measurement technology
• Nuclear facility dismantling
• Radiation protection consulting
• Nuclear waste management

Headquarters

HQ city

Heidelberg

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering and Consulting Services: GREEN generates revenue through professional engineering and consulting services for nuclear facility decommissioning. Services are billed as project-based professional services, including project management, radiation protection, clearance measurements, permitting, and waste disposal advisory.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

GREEN German Reengineering GmbH is a multi-disciplinary engineering consultancy that delivers end-to-end nuclear facility decommissioning services — including project leadership, radiological measurement and clearance procedures (via the proprietary DECONGreen procedure), process control, permitting, nuclear waste disposal advisory, training, and expert opinions — to nuclear power plant operators, research facilities, and regulatory bodies in Germany and Switzerland. The firm bundles project management, measurement technology, permitting, assessment, and disposal management under one roof using a team of approximately 40 engineers, physicists, and specialists.

Product overview

GREEN German Reengineering GmbH offers a comprehensive portfolio of services for nuclear facility decommissioning, organized around their core mission of achieving a 'green field' (grüne Wiese) after cleanup. Their services span the entire decommissioning lifecycle including change management, project leadership, radiological measurement and clearance procedures (using their proprietary DECONGreen measurement procedure), process control and scheduling, nuclear waste disposal, permitting procedures, and expert opinions. They also offer DOKOM 3.0, a proprietary database solution with modules for logistics, fire protection cadastre, and pollutant cadastre. The company works with universities and maintains in-house training facilities for continuing education. Services are delivered by a team of approximately 40 experts including engineers, physicists, and specialists across multiple disciplines.

Differentiator

Problem solved

Functional benefit

Products and services

• Decommissioning and Change Management
• Decommissioning Concepts and Project Leadership
• Radiological Measurement and Monitoring
• Process Control and Scheduling
• Nuclear Waste Disposal Advisory
• Permitting and Supervision Procedure Management
• Training and Education in Decommissioning
• Expert Opinions (Gutachten)

Quantifiable outcome

• Award-winning measurement procedure DECONGreen
• +1 more outcomes

Named customers3 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

Feature3 records

Partnerships

One partnership is on record.

• Green Swiss GmbHcoreStrategic or Co-development PartnerGREEN Swiss GmbH is a subsidiary of Green German Reengineering GmbH, operating in Switzerland as experts for the operation and decommissioning of nuclear facilities. Led by André Stocker as Managing Director, GREEN Swiss represents the company's Swiss market presence and participated jointly in the Generalversammlung des Nuklearforums Schweiz.

Scale indicators3 records

Recent moves8 records

Expansion highlights4 records

Broad incumbents

• AtkinsRéalis (SNC-Lavalin Nuclear): AtkinsRéalis operates a global nuclear business providing engineering, project management, and consulting services across reactor new-build, operations, and decommissioning. Overlaps with GREEN on decommissioning consulting and engineering, but is a broad engineering consultancy rather than a nuclear-only specialist.
• Tractebel (ENGIE): Tractebel is an international engineering consultancy (part of ENGIE) with a nuclear division offering decommissioning, waste management, and radiation protection consulting across European markets. Comparable to GREEN on decommissioning engineering consulting, but operating as a broad infrastructure and energy consultancy rather than a nuclear specialist.
• Framatome: Framatome is a major international nuclear reactor and services company offering engineering, component, and decommissioning services across the nuclear lifecycle. Overlaps with GREEN's engineering and decommissioning project services but operates at significantly greater scale across fuel, components, and plant services.
• Westinghouse Electric Company: Westinghouse is a global nuclear services incumbent offering reactor operations, fuel, and decommissioning services to utilities worldwide. Comparable to GREEN as a provider of decommissioning engineering and project management, though at vastly larger scale and with broader scope than a specialist German firm.
• TÜV NORD EnSys Hannover: TÜV NORD operates a dedicated nuclear division providing expert opinions, regulatory support, decommissioning consulting, and radiation protection services to German operators and authorities. Comparable to GREEN in regulatory expert services, though as a much larger, diversified testing/certification conglomerate.

Direct peers

• GNS Gesellschaft für Nuklear-Service: GNS is a leading German provider of nuclear waste storage, transport containers, and decommissioning services for German nuclear power plant operators. Comparable to GREEN's nuclear disposal advisory and waste documentation services, though GNS operates more upstream in waste packaging and transport.
• EWN Entsorgungswerk für Nuklearanlagen: EWN operates the German interim storage facilities for spent fuel and is responsible for decommissioning of the Greifswald and Rheinsberg nuclear power plants in eastern Germany. Comparable to GREEN as a German-based nuclear decommissioning operator providing radiological characterization, clearance, and waste management services.
• Studsvik: Studsvik is a Swedish-based nuclear services firm offering decommissioning, waste management, and fuel services to European and international nuclear operators. Comparable specialist nuclear services provider with overlapping capabilities in radiological characterization and decommissioning consulting.
• NUKEM Technologies: NUKEM Technologies is a German-headquartered engineering services firm specializing in nuclear facility decommissioning, radioactive waste management, and consulting for nuclear operators and regulators. Direct competitor to GREEN in the DACH market for radiological characterization, clearance measurement, and decommissioning project support.

Emerging players

• EnergySolutions: EnergySolutions is a US-headquartered nuclear services company focused on decommissioning, waste management, and fuel cycle services for commercial and government clients. Comparable niche specialist in nuclear decommissioning services, though primarily operating in North American markets rather than DACH.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/green-german-reengineering-gmbh
• Instagraminstagram.com/green_german_reengineering

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries1 record

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 Green German Reengineering GmbH