What Greenox Gmbh does

Greenox GmbH is a Stuttgart-based energy consulting and full-service renovation company founded in 2023, serving residential, commercial, and municipal property owners across Germany. The company provides BAFA-approved and dena-registered energy consulting services, including legally required energy certificates (Bedarfs- and Verbrauchsausweis), individual renovation roadmaps (iSFP), KfW/BAFA subsidy application management, and engineering services such as heat load calculations, building thermography, blower door testing, hydraulic balancing, QNG certification, and life cycle analysis. Its field-sales team of certified energy efficiency experts (EEE) conducts on-site consultations and guides customers through the full renovation journey.

Name

Greenox Gmbh

Legal name

GREENOX GmbH

Website

https://greenox-group.de

Company type

Private

Founded year

2023

Operating status

Operating

Headcount range

1–10 employees

Short description

Greenox GmbH is a Stuttgart-based, BAFA-approved energy consulting and full-service renovation firm serving residential, commercial and municipal property owners across Germany with consulting, subsidy application management and PV system delivery.

Ownership category

akta.pro rank

Product category

Energy Consulting Services

akta.pro primary industry

Solar EPC & Construction (Utility-Scale, Rooftop, Balance of System) (EUAMABAB)

akta.pro secondary industry

Construction Management & General Contracting (EPCM, Scheduling, QA/QC, HSE) (EUAMAFAJ)

Keywords

• Energy consulting services
• Building energy renovation
• Photovoltaic system installation
• Energy performance certificates
• Subsidy application management

Headquarters

HQ city

Stuttgart

HQ country

Germany

HQ region

Europe

Offices6 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Supply Chain, Infrastructure

Revenue model

1. Energy Consulting & Certification Services: Professional services revenue from energy consulting, energy certificate issuance (consumption and demand-based), individualized renovation roadmaps (iSFP), building accompaniment, hydraulic balancing, and GEG documentation. Services are quoted per project or hourly with BAFA subsidies covering up to 50% of consulting fees.
2. Photovoltaic & Storage Systems: Sale and installation of complete photovoltaic systems (5-15 kWp), battery storage (5.76-20.16 kWh), wallboxes (11 kW), and energy management systems as bundled packages. Revenue is recognized on a one-time basis per installation.
3. Subsidy Application Management: Fee-based service for preparing and submitting BAFA and KfW subsidy applications, typically charged as a percentage of the eligible investment (2.3% for private clients, 2.5% for commercial clients) or flat rates starting at EUR 315 net for private clients.
4. Trades & Construction Services: Coordination and delivery of multi-trade renovation services including windows, roofing, facade insulation, electrical work, tiling, and heating/plumbing through subsidiary companies and partner tradespeople. Revenue from material and labor margins.
5. PV Components & Add-ons: Additional revenue from batteries, wallboxes, energy management systems, and optional upgrades such as bi-directional charging, sold as supplements to the core PV system package.

Pricing tiers

Go-to-market motion3 records

Distribution channels5 records

Marketing channels10 records

Core offering

Greenox GmbH provides BAFA/KfW-certified energy consulting, energy certificates (consumption and demand-based), individual renovation roadmaps (iSFP), energy audits (DIN EN 16247), and architectural planning services for residential and non-residential buildings. The company also sells and installs photovoltaic complete packages (5-15 kWp) with optional battery storage, wallboxes, and energy management systems, and manages BAFA and KfW subsidy applications on behalf of customers.

Product overview

Greenox GmbH is an energy consulting and building services company offering a comprehensive portfolio of services centered on energy efficiency, building renovation, and renewable energy solutions. The core offering consists of energy consulting services (Energieberatung) for residential and non-residential buildings, including legally required energy certificates, individual renovation roadmaps (iSFP), and KfW/BAFA subsidy advisory. The company provides specialized services such as heat load calculations, building diagnostics (thermography, blower door tests), and QNG/LCA certifications. Complementing the consulting services, Greenox offers installation products including photovoltaic complete packages (5 kWp to 15 kWp configurations) with modular battery storage (5.76-20.16 kWh), wallbox charging stations (11 kW), and energy management systems. The company also provides related services through subsidiaries including electrical installation, tile work, and AI-driven property management. This represents a full-service model where Greenox acts as a single point of contact for customers, coordinating energy consulting, funding applications, and implementation through affiliated tradespeople.

Differentiator

Problem solved

Functional benefit

Products and services

• Energy Consulting (Energieberatung) Comprehensive energy consulting services for residential and non-residential buildings, including on-site analysis, renovation planning, and funding advisory for BAFA and KfW subsidies.
• Individual Renovation Plan (iSFP) Customized renovation roadmap for buildings analyzing current energy consumption, planning efficient measures, and considering economic and ecological aspects for step-by-step implementation.
• Energy Certificate (Energieausweis) Legally required energy performance certificates for buildings, offered both demand-based (Bedarfsausweis) and consumption-based (Verbrauchsausweis), for residential and non-residential properties.
• KfW Efficiency House Concept (KfW Effizienzhauskonzept) Energy efficiency concepts designed to help buildings achieve KfW efficiency house standards, including comprehensive analysis and improvement recommendations.
• Heat Load Calculation (Heizlastberechnung) Precise calculation of building heat requirements according to DIN 12831 for optimal heating system sizing.
• Energy Audit (Energieaudit) Energy audits for commercial properties conducted according to DIN EN 16247 / Art. 8 EDL-G requirements.
• Construction Supervision (Baubegleitung) Quality monitoring during construction or renovation projects to ensure planned energy standards are met.
• QNG Certification (QNG Zertifizierung) Certification for the Quality Seal for Sustainable Building (Qualitätssiegel Nachhaltiges Gebäude).
• Life Cycle Analysis (LCA) Life cycle analysis for buildings assessing environmental impact across the building's operational lifespan.
• Architect Services (Architekt) Architectural services including subdivision plans, construction management, design planning, and permit planning.
• Photovoltaic Complete Package (Photovoltaik-Komplettpaket) Complete PV system packages including planning, mounting, connection, and optional battery storage, wallbox, and emergency power function. Available in 5 kWp, 10 kWp, and 15 kWp configurations.
• Wallbox EV Charging Station Electric vehicle charging stations with 11 kW charging capacity, optional bi-directional charging capability, app control, and optimized solar charging.
• Electrical Installation (Elektroinstallation) Professional electrical installation services for new buildings and renovations, including safety and efficiency compliance.

Quantifiable outcome

• 65% energy savings potential documented for multi-family building renovation (family Gürbüz case study)
• +5 more outcomes

Named customers18 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

Feature6 records

Partnerships

Ten partnerships are on record, tiered core and minor.

• GREENOX Dürr Elektrotechnik GmbH & Co. KGcoreChannel Partner/ Reseller/ DistributorSubsidiary company specializing in electrical installation services (photovoltaic systems, wallboxes, electrical infrastructure). Provides in-house trade execution for GREENOX's bundled renovation services, ensuring coordinated delivery of electrical work as part of the full-service offering.
• GREENOX Gora Fliesen & Design GmbHcoreChannel Partner/ Reseller/ DistributorSubsidiary company providing tiling and design services. Integrated into GREENOX's multi-trade renovation delivery network, handling interior finishing work alongside other GREENOX trade partners.
• BW Real Estate GmbHminorChannel Partner/ Reseller/ DistributorListed as a subsidiary partner of GREENOX, providing real estate services as part of the GREENOX ecosystem.
• Stadt StuttgartcoreStrategic or Co-development PartnerGREENOX is an official partner of the City of Stuttgart, collaborating with the city's Energiesparprogramm (ESP) to support property owners with subsidies for comprehensive building energy renovations including facade insulation, roofing, windows, and heating system upgrades.
• BAFA (Bundesamt für Wirtschaft und Ausfuhrkontrolle)coreOthersGREENOX advisors are BAFA-certified to provide subsidized energy consulting reports and submit BAFA subsidy applications (EBW/EBN programs covering 50% of consulting fees). BAFA is the federal agency administering energy efficiency subsidy programs.
• KfW (Kreditanstalt für Wiederaufbau)coreOthersGREENOX prepares and submits KfW Effizienzhaus subsidy applications (BzA, BnD, TPB) for eligible renovation projects. KfW is the German development bank providing low-interest loans and redemption grants for building energy efficiency.
• Deutsche Energie-Agentur (dena)coreOthersGREENOX advisors are registered in the dena Energieeffizienz-Expertenliste, Germany's premier registry of certified energy efficiency experts, enabling them to issue subsidized consulting reports and conduct mandatory energy audits.
• GIH (Gebäudeenergieberater Deutschland e.V.)minorOthersGREENOX is a member of GIH, the federal interest representation for energy advisors in Germany, providing networking, training, and professional standards alignment.
• 80 Millionen gemeinsam für den Energiewechsel (BMWK Campaign)coreOthersGREENOX actively participates in the German federal government's '80 Millionen gemeinsam für den Energiewechsel' (80 Million Together for the Energy Transition) campaign, an initiative of the BMWK (Federal Ministry for Economic Affairs and Climate Action) to accelerate building energy renovations.
• Zukunft AltbauminorOthersGREENOX has been recognized by the Baden-Württemberg Ministry's Zukunft Altbau program, which distinguishes high-quality energy advisors in the state.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• E.ON Energie Deutschland: E.ON is a major German utility offering residential and commercial solar, heat pump, and energy management solutions alongside traditional power supply. Its energy advisory and PV installation lines compete broadly with GREENOX's residential offering but as part of a much wider utility portfolio.
• EnBW Energie Baden-Württemberg: EnBW is one of Germany's largest energy utilities with growing residential solar, heat pump, and EV charging offerings, and is itself a listed customer of GREENOX. As a vertically integrated utility with mass-market reach, it represents the incumbent end of the energy-transition services market that GREENOX serves.
• Viessmann Climate Solutions: Viessmann is a major German manufacturer of heating, industrial, and refrigeration systems with growing service and decarbonization offerings. It overlaps with GREENOX in the heat-pump/retrofit advisory and installation space, but as a large established OEM with a much broader portfolio.

Regional players

• DAU Energieberatung: DAU Energieberatung is a network of independent BAFA-certified energy advisors operating primarily in southern Germany, providing iSFP, energy certificates, and subsidy advisory. It is a fragmented regional peer that competes with GREENOX for the same certified-advisor-led customer base.

Emerging players

• co2online: co2online is a non-profit climate protection consultancy funded by the German federal government that provides energy consulting, subsidy guidance, and modernization advice to households. It is a partial competitor on the consulting and subsidy advisory side that GREENOX monetizes.
• Zolar: Zolar is a German online marketplace for solar installations that connects homeowners with vetted installers and supports subsidy navigation. It overlaps with GREENOX on the residential PV planning and lead generation side, though it does not deliver in-house consulting or multi-trade renovation.

Direct peers

• 1Komma5°: 1Komma5° is a German energy consulting and renewable installation platform offering CO2-optimized heating, PV, and e-mobility solutions under a "heartbeat" subscription model. It is the most directly comparable full-service competitor to GREENOX, combining advisory, subsidy navigation, and installation across German cities.
• Enpal: Enpal is a leading German provider of solar leasing, battery storage, wallboxes, and heat pumps targeting residential customers with a subscription-based model. It competes directly with GREENOX in residential PV package sales and energy renovation advisory.
• Enerix: Enerix is a German franchise network of regional PV installers offering turnkey solar systems and storage solutions to homeowners and businesses. It competes with GREENOX's PV package offerings and has a comparable regional-rollup distribution model.
• Thermondo: Thermondo is a German full-service heat pump and renovation specialist offering advisory, financing, subsidy navigation, and installation across Germany. It overlaps directly with GREENOX on residential energy renovation coordination and BAFA/KfW subsidy capture.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/people/GREENOX-Group/61560292628331
• LinkedInlinkedin.com/company/greenoxgroup
• Instagraminstagram.com/greenoxgroup
• TikToktiktok.com/@greenoxgroup

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Subsidiaries5 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 Greenox Gmbh