What Greenfiber does

Greenfiber Internet & Dienste GmbH is a privately held, family-controlled German fiber-to-the-home (FTTH) internet service provider headquartered in Hamburg with a customer-facing and engineering presence in Lüneburg. The company traces its operating lineage to 1991 via the founding of LAN Consult Hamburg (LCH), a fiber planning office created by Uwe Krabbe; it launched its first residential fiber network (Rhönnet) in Eichenzell in 2011 and has since scaled to more than 50,000 customers across roughly twenty-five municipalities in Nordrhein-Westfalen, Niedersachsen, Schleswig-Holstein, and Hessen. The legal entity is managed by Uwe Krabbe, Jessica Krabbe, Benjamin Rausch, and Jan Raufeiser.

Greenfiber's technical stack is built on XGS-PON (10 Gigabit Symmetrical Passive Optical Network) for residential and small-business customers and AON for larger business customers, with a dedicated fiber line per subscriber (FTTH) terminating at a GEE inside the building. The network supports symmetric speeds up to 10,000 Mbit/s and, since a 2023 upgrade in Eichenzell, Open Access operations that allow third-party carriers to deliver services over Greenfiber infrastructure. Product lines consist of residential internet tiers (200/500/1,000/10,000 Mbit/s), regional promotional tariffs (Wülfrath, Gummersbach, WM-Special), optional IPTV and VoIP add-ons, business packages with SLA-backed connectivity and SIP Trunk, and pre-configured router hardware (ZTE, AVM FRITZ!Box, TP-Link EB810v).

Commercially, Greenfiber operates a hybrid B2C/B2B/B2Government model. Residential customers self-onboard via an availability checker on greenfiber.de, a toll-free hotline, and direct mail plus community information events in expansion areas; business and municipal customers are served through consultative field sales and partnerships with municipal utilities (e.g., Stadtwerke Wülfrath) and municipal broadband entities such as Breitband Hille GmbH (a joint venture with the municipality of Hille). Revenue is largely recurring monthly subscription (€40–€100/month, 12- or 24-month minimum terms), augmented by telephony and IPTV add-ons, hardware sales/rentals, and one-time setup or construction-cost contributions (€50 setup fee, plus Baukostenzuschuss of €250–€750 in certain districts). Several federally subsidized white-spot projects — most recently the 700 commercial addresses in Ennepe-Ruhr-Kreis (2024) — provide non-dilutive growth capital but are not reflected in equity raises; the company has grown organically without disclosed venture or private-equity backing.

Name

Greenfiber

Legal name

GREENFIBER Internet & Dienste GmbH

Website

https://greenfiber.de

Company type

Private

Founded year

1991

Operating status

Operating

Headcount range

11–50 employees

Short description

Greenfiber is a German fiber-to-the-home internet service provider operating its own XGS-PON network across 25+ municipalities, delivering symmetric speeds up to 10 Gbit/s to residential, business, and municipal customers, with over 50,000 subscribers.

Ownership category

akta.pro rank

Product category

Fiber Broadband Telecommunications

SIC

Telephone Communications (No Radiotelephone) (4813)

akta.pro primary industry

Fiber ISPs (FTTH/FTTP Retail Providers) (HDAIADAE)

akta.pro secondary industries

Fiber-to-the-Premises (FTTP/FTTH) Broadband Providers (HDAIABAC), Fiber-to-the-Home (FTTH) Operators (HDAIACAB), Rural Broadband & Cooperative Fiber Operators (HDAIACAG), Municipal & Community Broadband Networks (HDAIACAE)

Keywords

• Fiber internet services
• FTTH broadband
• Business connectivity
• VoIP telephony
• IPTV streaming

Headquarters

HQ city

Hamburg

HQ country

Germany

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Internet Subscription Services: Recurring monthly subscription fees for fiber internet access at various speed tiers (200–10,000 Mbit/s). This is the primary revenue stream. Tariffs include 12 or 24-month minimum contract terms with monthly billing, and contracts auto-renew monthly thereafter unless cancelled.
2. Telephony Add-ons: Optional monthly add-on fees for VoIP landline flat rates: €5/month for German fixed-line calls and €5/month for German mobile calls. SIP Trunk services for business customers with telephone systems.
3. IPTV / TV Services: Optional IPTV service with TV receiver, streaming app, and recording storage upgrades (10h, 100h, or 200h). Revenue is generated through monthly fees added to the internet subscription.
4. Router Hardware (Sale and Rental): Customers can purchase or rent routers from Greenfiber. Routers include vorkonfigurierte (pre-configured) devices such as ZTE ZXHN F8605P, AVM FRITZ!Box 5530 Fiber, FRITZ!Box 5590 Fiber, and TP-Link EB810v (for 10G speeds). The router rental is tied to the internet contract term and cannot be cancelled separately.
5. Business Solutions and SLAs: Custom fiber solutions for businesses including symmetric connections, SLA-backed bandwidth, multi-location networking, and SIP Trunk for PBX integration. Revenue generated through individualized business tariffs.
6. Connection / Construction Fees: One-time setup fees including a €50 processing fee (Einrichtungsgebühr) for service activation. In certain expansion areas, construction cost contributions (Baukostenzuschuss) may be required from property owners (e.g., €250 in Wülfrath, €500 in Wuppertal, €750 in Bardowick-Gellersen, €0 for tenants). Some subsidized connections in funded expansion areas are provided at no cost.

Pricing tiers

Go-to-market motion3 records

Distribution channels6 records

Marketing channels10 records

Core offering

Greenfiber is a German fiber optic internet service provider operating FTTH networks across multiple federal states. It delivers fiber internet access at speeds from 200 Mbit/s to 10,000 Mbit/s via XGS-PON and AON technology, complemented by VoIP telephony, IPTV television services, and tailored business connectivity solutions including SIP Trunk and SLA-backed connections.

Product overview

GREENFIBER is a German fiber optic internet service provider offering high-speed broadband connectivity through FTTH (Fiber-to-the-Home) technology. The core product portfolio centers on internet packages ranging from 200 Mbit/s to 10,000 Mbit/s, supplemented by IPTV television services and VoIP telephony as optional add-ons. Business solutions include AON technology and SIP-Trunk services for enterprise phone systems. The company operates an XGS-PON network infrastructure supporting symmetric speeds up to 10G, with Open Access capability allowing third-party providers to use the network. Regional special tariffs are available in partnership municipalities, and the company provides in-house cabling services along with pre-configured router hardware options.

Differentiator

Problem solved

Functional benefit

Products and services

• Greenfiber Fiber Internet (FTTH) Residential fiber-to-the-home internet access with symmetric speeds from 200 Mbit/s to 10,000 Mbit/s, delivered via XGS-PON technology on a dedicated fiber line per subscriber. No volume limits apply; tariffs include 12- or 24-month minimum contract terms.
• Greenfiber IPTV Television service delivered over the fiber network via IPTV, available with IPTV receiver or streaming app on Amazon Fire TV, Apple and Android devices, with up to 5 devices and optional recording storage upgrades.
• Greenfiber VoIP Telephony Voice-over-Internet-Protocol telephony with optional flatrate add-ons (€5/month German fixed-line, €5/month German mobile), supporting up to 10 telephone numbers and 2 voice channels for residential customers, plus SIP Trunk capabilities for business PBX systems.
• Greenfiber Business Solutions Commercial fiber internet packages with individually tailored consulting and business tariffs, including AON technology, symmetric connections, SLA-backed bandwidth, multi-location networking, and SIP Trunk for telephone systems integration.
• Greenfiber Router Hardware Pre-configured fiber router options available for sale or rental, including ZTE ZXHN F8605P, AVM FRITZ!Box 5530 Fiber, FRITZ!Box 5590 Fiber and TP-Link EB810v (for 10G/Wi-Fi 7). Rental is tied to the internet contract term.
• Greenfiber In-House Cabling Service Professional in-house fiber cabling services for residential and commercial buildings, including glass fiber subscriber connection point (GF-TA) installation and ONT setup, delivered via regional technical partners.
• Greenfiber Municipal & Vereine Connectivity Special fiber solutions for clubs (Vereine) and municipalities (Kommunen), including free WLAN access point installation for participating clubs and municipal fiber infrastructure partnerships leveraging federal and state broadband subsidy programs.
• Greenfiber Wohnungswirtschaft (Housing Industry) Service Fiber connectivity solutions for housing companies and property managers, including multi-family house installations and property owner declarations to enable fiber rollout to all units in a building.

Quantifiable outcome

• 50,000+ customers served across Germany as of 2024
• +6 more outcomes

Named customers5 records

Segments6 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Eight partnerships are on record, tiered core and minor.

• Bundesministerium für Digitales und Verkehr (Federal Ministry for Digital and Transport) / BundesförderprogrammcoreStrategic or Co-development Partner · 1 January 2024Greenfiber participates in the federal broadband subsidy program (Bundesförderprogramm) managed by the Federal Ministry for Digital and Transport. This provides funding for fiber connections to areas classified as 'weisse Flecken' (addresses with less than 30 Mbit/s). The program subsidizes construction costs, making connections free or reduced-cost for eligible households and businesses. The Ennepe-Ruhr-Kreis project (700 addresses) is one example.
• Municipal Partner Kommunen (Various Municipalities)coreStrategic or Co-development Partner · 1 January 2021Since 2021, Greenfiber has entered into municipal cooperation agreements with numerous cities and municipalities across Germany, including Bardowick-Gellersen, Hille, and others. These partnerships involve co-funded fiber network construction, often leveraging federal broadband subsidy programs (Bundesförderprogramm), with Greenfiber providing infrastructure and operational expertise.
• FIBERTEAMcoreStrategic or Co-development PartnerFIBERTEAM is a key operational partner in fiber network planning, construction, and operations. Greenfiber and FIBERTEAM jointly raise awareness about fiber infrastructure and skilled trades in fiber construction. FIBERTEAM handles network construction and operation alongside Greenfiber in various expansion areas, emphasizing regional collaboration with local tradespeople.
• Stadtwerke Wülfrath (Wülfrath Municipal Utilities)coreStrategic or Co-development PartnerStadtwerke Wülfrath and Greenfiber formed a partnership to build a municipal fiber network in Wülfrath. The cooperation brings digital infrastructure directly to residents and businesses, with the municipal utility acting as a local partner. Quote from Dr. Heiko Schell, Managing Director of Stadtwerke Wülfrath: 'Ein schnelles und zuverlässiges Internet ist heute unverzichtbar für eine moderne Stadt und eine zukunftsfähige Wirtschaft.'
• Breitband Hille GmbH (Municipal Broadband Company)coreStrategic or Co-development PartnerBreitband Hille GmbH is a joint venture between the municipality of Hille and Greenfiber Holding GmbH. The company manages the municipal fiber rollout in Hille, combining public-sector mandate with Greenfiber's fiber expertise and infrastructure. Significant progress has been made, with thousands of households now connected.
• LAN Consult Hamburg (LCH)coreStrategic or Co-development PartnerLAN Consult Hamburg (LCH) is the original planning and consulting company founded by Uwe Krabbe in 1991. It specializes in fiber optic planning, project management, and surveying across Germany. LCH is the predecessor and closely related entity to Greenfiber, sharing founders and expertise. LCH's Merlin Krabbe is cited as Greenfiber's CEO in project contexts.
• Regional Technical Partners (Technikpartner)minorImplementation/ SI/ Consulting PartnerGreenfiber maintains a network of regional technical installation partners across its expansion areas. These include companies such as Tele-Service GmbH (nationwide for multi-family buildings), Schlottmann Elektronik (Bad Oeynhausen), Elektrotechnik Blank (Hille), Elektro Beering (Hüllhorst), and numerous others in Kreis Minden-Lübbecke, Landkreis Lüneburg, and Oberbergischer Kreis. These partners handle in-home fiber cable installation and router setup.
• Land Nordrhein-Westfalen (State of North Rhine-Westphalia)coreStrategic or Co-development PartnerThe state of NRW co-funds broadband expansion projects alongside the federal government. Greenfiber's Ennepe-Ruhr-Kreis project receives funding from both Bundes- and Landesförderprogramme, with the state contributing to the cost of connecting approximately 700 commercial addresses in Hattingen, Gevelsberg, and Witten.

Scale indicators13 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Deutsche Glasfaser: Deutsche Glasfaser is the leading independent German FTTH retail/wholesale provider, deploying XGS-PON in underserved regions, partnering with municipalities, and operating an Open Access model. It is the closest direct competitor to Greenfiber in both target customer and business model.
• 1&1 Versatel: 1&1 Versatel operates a fiber-based fixed network in Germany providing internet, telephony, and business connectivity to consumers and enterprises, including its own FTTH rollouts via the 1&1 home network. Direct overlap in FTTH ISP, VoIP, and B2B fiber services.
• Glasfaser Nordwest: Glasfaser Nordwest is a German FTTH joint venture (Deutsche Telekom and EWE) deploying open-access fiber networks in northwestern Germany. Directly comparable to Greenfiber in FTTH build, Open Access architecture, and municipal partnership model.
• Deutsche GigaNetz: Deutsche GigaNetz is a German FTTH challenger building open-access fiber networks in underserved cities with municipal partners. Closely comparable to Greenfiber in target geographies (regional/semi-urban Germany), FTTH technology, and partnership-led GTM.

Broad incumbents

• Deutsche Telekom (MagentaZuhause / Glasfaser): Deutsche Telekom is Germany's largest telecom incumbent and a major FTTH builder with national scale, MagentaZuhause fiber tariffs, and bundled TV/phone offers. It competes with Greenfiber in the same addressable footprint but as part of a much wider portfolio.
• Vodafone Deutschland (GigaZuhause): Vodafone Deutschland offers fiber and cable broadband (GigaZuhause), IPTV (GigaTV), and VoIP telephony across Germany. It is a broad incumbent in the same ISP/triple-play space with overlapping fiber rollout programs.
• EWE TEL: EWE TEL is the telecom arm of EWE, a large municipal utility group in northwestern Germany offering fiber, DSL, mobile, and TV services. Comparable to Greenfiber in utility-backed fiber build, geographic overlap, and municipal relationships.

Regional players

• M-net Telekommunikations: M-net is a regional FTTH and fiber-network operator serving Bavaria and parts of Baden-Württemberg with internet, telephony, and TV. Comparable to Greenfiber in FTTH build-and-retail model, but operates in a different (southern) geography.
• NetCologne: NetCologne is a regional fiber/cable ISP in the Cologne/Bonn area offering broadband, telephony, and TV. Comparable to Greenfiber in municipal-utility heritage, FTTH build, and triple-play bundles, but focused on the Rhineland region.
• wilhelm.tel (Stadtwerke Norderstedt): wilhelm.tel is a municipal-utility fiber ISP in the Hamburg metropolitan region (Norderstedt, Hamburg, Pinneberg area) offering internet, TV, and telephony over its own FTTH network. Directly comparable to Greenfiber in the same metro region with a similar utility-/fiber-based ISP model.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCZTdxn7SICbQjyaOWb7K0Ng
• Facebookfacebook.com/greenfiber.de
• LinkedInde.linkedin.com/company/greenfiber-de
• Instagraminstagram.com/greenfiber_de/?hl=de
• Xx.com/GREENFIBER_de

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 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 Greenfiber