What Astrix does

aastrix GmbH (doing business as Astrix/aastrix) is a German engineering and consulting firm headquartered in Leipzig that specializes in the planning, development, and implementation support of sustainable network infrastructure across three verticals: fiber optic (Glasfaser), district heat (Wärme), and electricity (Strom) networks. The firm is structured around three service pillars — Engineering (network planning and detailed/approval design), Projektunterstützung (project management, construction supervision, financing/subsidy advisory), and Beratung (consulting modules for broadband expansion, municipal heat planning, and transformation plans). Its offerings span HOAI phases 1-8 from feasibility through construction documentation, with named consulting and engineering modules such as Kommunale Wärmeplanung, Geförderter Glasfaserausbau, Eigenwirtschaftlicher Glasfaserausbau, Netzplanung Wärmenetz, and Transformationsplan, each addressing a specific stage or regulatory trigger in the German infrastructure value chain.

The firm's technology stack centers on digital engineering methods: GIS-based planning, BIM-compliant data models with GIS coupling, AIA (Employer Information Requirements) structures, and digital twin concepts for heat networks. These tools are applied across the full project lifecycle — from analysis and feasibility through tender preparation, construction supervision, and as-built documentation. The technology is positioned as an integration and interoperability layer rather than a proprietary platform, enabling coordination with authorities, planners, and project partners.

Revenue is generated through professional services fees on a project-based model with no publicly disclosed pricing tiers or rates. The firm operates a B2B direct consulting model targeting four primary customer segments: German municipalities (Kommunen), utilities and grid operators (Versorger), telecommunications providers (Provider), and municipal housing companies (Wohnungswirtschaft). Go-to-market is enterprise field sales combined with a strategic partner ecosystem — including EXAVY GmbH (project developer/investor), TKI mbH (network planning software), ETL Energietechnik Leipzig GmbH (energy systems consulting), DK Capital GmbH (financing), and DWL Bohrung (trenchless construction) — which enables aastrix to deliver integrated, end-to-end infrastructure projects despite its boutique scale. The firm is founder-managed, with Dr. Daniel Kilper serving as Managing Director (Geschäftsführer), and operates as an independent private GmbH with no disclosed institutional investors, PE backing, or parent company.

Name

Astrix

Legal name

aastrix GmbH

Website

https://aastrix.com

Company type

Private

Founded year

2004

Operating status

Operating

Headcount range

11–50 employees

Short description

aastrix GmbH is a Leipzig-based German engineering and consulting firm specializing in planning, engineering, and project management support for sustainable fiber optic, district heat, and electricity network infrastructure, serving municipalities, utilities, telecom providers, and housing companies via modular HOAI-phase services and a partner-delivered ecosystem model.

Ownership category

akta.pro rank

Product category

Network Infrastructure Engineering & Consulting

NAICS

Engineering Services (541330), Architectural, Engineering, and Related Services (5413), Power and Communication Line and Related Structures Construction (237130)

SIC

Services-Computer Integrated Systems Design (7373)

akta.pro primary industry

Microgrid Development, EPC & Integration (EUAMAJAB)

akta.pro secondary industries

Performance Contracting & Energy-as-a-Service (EaaS) for Buildings (BPABAGAN), Smart Grid Automation & Distribution Management (DA/ADMS) (EUADAPAA)

Keywords

• Infrastructure engineering consulting
• Network planning services
• Fiber optic consulting
• Heat network planning
• Municipal infrastructure consulting

Headquarters

HQ city

Potsdam

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

Revenue model

1. Engineering and Planning Services: Professional services revenue from engineering, planning, and technical consulting for network infrastructure projects including fiber, heat, and electricity networks.
2. Project Management and Support: Project management and quality assurance services for infrastructure construction projects.
3. Consulting and Advisory: Strategic consulting including sustainability strategy, CO2 balance, transformation planning, and sustainability reporting for energy projects.
4. Funding and Financing Advisory: Grant advisory, application management, and lifecycle management for fiber and heat network expansion funding.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels4 records

Core offering

Aastrix is a German engineering and consulting firm that plans, develops, and project-manages sustainable network infrastructure for fiber optic, heat, and electricity grids. It delivers modular services covering all HOAI project phases — from feasibility analysis, market exploration, and funding applications through detailed engineering and BIM/GIS-based planning to construction supervision, commissioning, and asset management. Its customers are German municipalities, energy utilities, telecom providers, and municipal housing companies executing the energy transition, heat transition, and broadband rollout.

Product overview

aastrix is a modular engineering and consulting platform for sustainable network infrastructure planning. The company operates across three core areas—Engineering (netzwerk engineering for fiber optic, electricity, and heat networks), Projektunterstützung (project support including financing strategy, project management, and construction support), and Beratung (consulting for broadband expansion, municipal heat planning, and transformation plans). The platform is structured around named consulting and engineering modules (e.g., Breitbandausbau in Kommunen, Kommunale Wärmeplanung, Geförderter Glasfaserausbau) that can be combined for comprehensive project support. aastrix also maintains an ecosystem of strategic partners (EXAVY for project development/investment, TKI mbH for network planning software, ETL for energy systems planning) to deliver integrated services from feasibility through commissioning.

Differentiator

Problem solved

Functional benefit

Products and services

• Broadband Expansion in Municipalities (Breitbandausbau in Kommunen) Consulting module for German municipalities on subsidized broadband (fiber optic) expansion, covering supply analysis, market exploration procedure, funding application, and implementation support across the full project lifecycle.
• Broadband Expansion in Commercial Areas (Breitbandausbau in Gewerbegebieten) Consulting module for telecommunications companies on self-funded fiber optic network expansion in commercial and industrial areas, including market analysis, network planning, rollout processes, and IT integration.
• Municipal Heat Planning (Kommunale Wärmeplanung) Municipal heat planning service required under the German Heat Planning Act (Wärmeplanungsgesetz), covering inventory analysis, potential analysis, target network planning, milestone planning, and implementation strategy for climate-neutral heat supply.
• Transformation Plan (Transformationsplan) Strategic transformation planning module for municipalities to achieve climate-neutral heat supply by 2030, including inventory analysis, potential analysis, target network design, transformation path, and milestones.
• Project Idea and Project Brief (Projektidee und Projektsteckbrief) Development of project ideas and project briefs for sustainable energy infrastructure projects, including feasibility analysis, business case modeling, and funding strategy.
• Project Support in Heat Network Expansion (Projektunterstützung im Wärmenetzausbau) Construction-phase project management and quality assurance for heat network expansion, including project control, trade coordination, digital construction files, budget control, approvals, and commissioning support.
• Subsidized Fiber Optic Expansion (Geförderter Glasfaserausbau) Subsidized fiber optic network expansion consulting for municipalities and providers, covering all HOAI phases (1–8) from feasibility analysis through construction supervision and documentation.
• Self-Funded Fiber Optic Expansion (Eigenwirtschaftlicher Glasfaserausbau) Self-funded fiber optic network expansion consulting for telecom providers, covering market analysis, network planning, rollout management, and IT integration across HOAI phases 1–8.
• Financing Strategy and Subsidies (Finanzierungsstrategie und Fördermittel) Financing strategy and subsidy management consulting for network infrastructure projects, including capital structure analysis, identification of relevant funding programs (BEW, EFRE, KfW), and application support.
• Project Management in Infrastructure Projects (Projektmanagement in Infrastrukturprojekten) Project management and quality assurance for network expansion projects, covering all HOAI phases from basic investigation through construction supervision, data management, and lifecycle support.
• Projects with Municipal Housing Companies (Projekte mit kommunalen Wohnungsgesellschaften) Integrated infrastructure projects for municipal housing companies, including heat networks, tenant electricity models, PV systems, digital infrastructure, and financing models.
• Heat Network Planning (Netzplanung Wärmenetz) Heat network planning service from initial idea through feasibility to network concept, including variant comparison, LCOH (levelized cost of heat) calculation, CO2 analysis, and technical network design.
• Detailed and Approval Planning for Heat Networks (Fein- und Genehmigungsplanung Wärmenetz) Detailed technical planning and approval documentation for heat networks, including BIM data modeling, AIA structure management, stakeholder coordination, and tender preparation.
• Heat Network Planning in Residential New Construction (Wärmenetzplanung im Wohnneubau) Heat network planning for new residential neighborhoods, integrating renewable heat and power supply, PV, battery storage, smart grid, and IoT systems into quarter planning.
• Electricity Connection Network Planning (Netzplanung Strom-Anschlussnetze) Electricity connection and distribution network planning for utility companies, including load analysis, network dimensioning, routing, variant comparison, and portfolio project support.

Quantifiable outcome

• CO2 reduction targets achieved through renewable energy integration
• +1 more outcomes

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Six partnerships are on record, tiered core and supporting.

• EXAVY GmbHcoreStrategic or Co-development PartnerProject developer, investor, and contractor for sustainable energy networks of the next generation, tailored to the needs of utilities, municipalities, and energy cooperatives. Acts as key financing and development partner within the aastrix ecosystem.
• TKI mbHcoreTechnology or IntegrationNetwork planning and software provider with over 30 years of experience serving international markets for network assets from broadband to heat networks.
• ETL Energietechnik Leipzig GmbHcoreImplementation/ SI/ Consulting PartnerConsulting engineers based in Leipzig providing technical-economic consulting, planning of conventional and alternative energy systems, and project management support.
• KOWID e.V. LeipzigsupportingStrategic or Co-development PartnerThink tank for municipalities and administration, providing strategic support and advisory services for public sector clients.
• Estonian FibersupportingTechnology or IntegrationNetwork planning and digitalization services provider supporting fiber network planning and digital transformation projects.
• DWL BohrungsupportingImplementation/ SI/ Consulting PartnerTrenchless construction, drilling, and cable laying services provider for network infrastructure installation.

Scale indicators1 record

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Mott MacDonald: Global engineering consultancy with established German practice in energy, transportation, and built environment. Broad incumbent providing integrated engineering services to utilities and public-sector clients comparable to aastrix's value proposition.
• AFRY AB: Global engineering consultancy (formerly Pöyry and ÅF) with significant German energy and infrastructure practice. Broad incumbent with overlapping capabilities in heat network design, grid planning, and energy transition consulting serving utilities and municipalities.
• Ramboll Group: International engineering consultancy with strong energy transition and infrastructure expertise. Comparable as a broad incumbent with overlapping services in district heating, grid modernization, and decarbonization advisory for European utilities and municipalities.
• Tractebel Engineering (Engie): Global engineering consultancy (Engie subsidiary) specializing in energy, water, and urban infrastructure. Comparable as a broad incumbent offering energy consulting and infrastructure engineering that overlaps with aastrix's utility and municipal client work.

Direct peers

• Drees & Sommer SE: German engineering consultancy with deep expertise in buildings, infrastructure, and energy efficiency. Comparable to aastrix in serving municipalities, housing companies (Wohnungswirtschaft), and utilities on integrated infrastructure projects combining decarbonization, energy systems, and digital infrastructure.
• Fichtner GmbH & Co. KG: German engineering consulting firm specializing in energy, infrastructure, and resource projects. Directly comparable to aastrix as both provide engineering planning and consulting for utility networks, with Fichtner serving as a larger-scale reference for the same core customer segments (utilities, municipalities).
• BET Büro für Energiewirtschaft und Technik: German consulting firm focused on energy economics, energy technology, and energy regulation. Directly comparable to aastrix for its advisory services to utilities and municipalities on energy transition, network planning, and transformation strategy.

Emerging players

• Kofler Energies GmbH: German engineering firm focused on renewable energy infrastructure, district heating, and energy transition consulting. Comparable to aastrix as a similarly-sized specialist working on heat networks and renewable integration projects in the German market.

Regional players

• Trianel GmbH: German municipal utility network operator and consulting partner owned by ~100 municipal utilities. Regional player with comparable municipal utility customer base and shared focus on enabling energy transition projects for German Kommunen.
• Iqony GmbH (formerly STEAG): German energy services company with infrastructure focus including district heating, energy contracting, and grid services. Regional player with comparable focus on heat networks and energy infrastructure serving German municipalities and utilities.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/aastrix-gmbh

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 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 Astrix