NEX Nord Energie Experten

What NEX Nord Energie Experten does

NEX Nord Energie Experten GmbH is a privately held German engineering consultancy (Ingenieurbüro) founded in 2023 and headquartered at Karl-Anton-Straße 16 in Düsseldorf, North Rhine-Westphalia. The firm provides certified energy-efficiency consulting for both residential (Wohngebäude) and non-residential (Nichtwohngebäude) buildings, organized around two product lines: residential services led by the subsidized Individueller Sanierungsfahrplan (iSFP), KfW-Effizienzhaus-Berechnung calculations with virtual 3D building modeling, room-by-room Heizlastberechnung nach DIN 12831, and hydraulic balancing (Verfahren B); and non-residential services comprising Energiekonzepte for SMEs and public buildings, DIN V 18599 Module 2 consulting, KfW 263 application support, BAFA-Förderung construction accompaniment, Energieausweise, and Lebenszyklusanalyse for KfW climate-friendly construction.

The firm operates an engineering-driven service model: every engagement is performed by certified Energie-Effizienz-Experten listed with BAFA (Berater Nr. EB533325) and KfW, applying DIN-standardized calculations and on-site inspections. Customer segments span residential property owners, homeowner associations, SMEs, office and mixed-use commercial buildings, and public institutions. GTM is sales-led and relationship-driven — the firm offers free initial consultations and conducts direct outreach across the Rhine-Ruhr metropolitan area from its Düsseldorf base, supplemented by content marketing on LinkedIn, Instagram, and an educational blog. Revenue is generated through professional-services fees on a project-by-project basis, with certain offerings (notably iSFP) eligible for up to 50% BAFA subsidy of consulting costs.

Leadership comprises co-Managing Directors Carol Charlier (Kaufmännischer Geschäftsführer, M.Sc. Bauwirtschaftsingenieur) and Andreas Buller (Technischer Geschäftsführer, M.Sc. Maschinenbau), supported by dedicated heads of marketing/sales and technical operations, plus project consultants and assistants. The firm reports 250+ satisfied customers, 160+ supervised renovation measures, and 400+ completed energy consultations, with no external investors, parent company, or disclosed financials. Ownership appears closely held by the founding partners, and the firm maintains professional liability insurance through Allianz.

Name

NEX Nord Energie Experten

Legal name

NEX Nord Energie Experten GmbH

Website

https://ne-x.de

Company type

Private

Operating status

Operating

Headcount range

1–10 employees

Short description

NEX Nord Energie Experten is a Düsseldorf-based, BAFA- and KfW-certified engineering consultancy providing energy-efficiency consulting, subsidy application support, and DIN-standard building analysis for residential property owners, SMEs, and public institutions across Germany's Rhine-Ruhr region.

Ownership category

akta.pro rank

Product category

Building Energy Efficiency Consulting

NAICS

Environmental Consulting Services (54162)

akta.pro primary industry

Energy Systems & Power Engineering Consulting (BPAHAIAG)

Keywords

• Energy efficiency consulting
• Building energy audits
• BAFA energy advisors
• KfW subsidy support
• Residential renovation planning

Headquarters

HQ city

Düsseldorf

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Professional Services: Energy consulting fees for residential and non-residential building analysis, renovation planning, and construction supervision. Services include energy certificates, heat load calculations, efficiency house calculations, and subsidy application support.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

NEX Nord Energie Experten GmbH provides BAFA- and KfW-compliant energy consulting for residential and non-residential buildings in Germany, producing individueller Sanierungsfahrplan (iSFP), KfW-Effizienzhaus-Berechnung, heat load calculations per DIN 12831, energy concepts for SMEs and public buildings per DIN V 18599, and Energieausweise. The firm combines these consulting deliverables with adjacent services such as construction supervision (Baubegleitung), funding application support, hydraulic balancing, and life cycle analysis.

Product overview

NEX Nord Energie Experten is an engineering firm offering energy consulting and advisory services for residential and non-residential buildings in the Rhein-Ruhr region of Germany. The service portfolio consists of specialized consulting offerings organized around two building categories: (1) Wohngebäude (residential buildings) featuring the Individueller Sanierungsfahrplan (iSFP) as the flagship subsidized energy consultation product, complemented by KfW-Effizienzhaus-Berechnung calculations, Heizlastberechnung nach DIN 12831 heat load calculations, Baubegleitung & Fördermittelservice construction/funding support, and Energieausweise energy certificates; and (2) Nichtwohngebäude (non-residential buildings) providing Energiekonzepte for SMEs and public buildings, DIN V 18599 Module 2 energy consulting, BAFA-Förderung & Baubegleitung funding support, KfW 263 application support, and Energieausweise certificates. The firm also offers a virtual 3D building modeling capability as a standard component across most services, and provides Lebenszyklusanalyse (LCA) for KfW climate-friendly construction programs. All services leverage engineering-grade calculations and compliance with German building energy standards, with certified experts listed for both BAFA and KfW funding programs.

Differentiator

Problem solved

Functional benefit

Products and services

• iSFP (Individueller Sanierungsfahrplan) BAFA-compliant individual renovation roadmap for residential property owners and homeowner associations (WEGs) that documents step-by-step energy retrofit measures and unlocks federal subsidies.
• KfW-Effizienzhaus-Berechnung Technical calculation proving KfW efficiency-house standard achievement for residential buildings, a prerequisite for KfW subsidy applications.
• Heizlastberechnung nach DIN 12831 Standard-compliant heat load calculation for residential heating system design and sizing, performed per DIN 12831.
• Energiekonzept für KMUs BAFA-funded energy concept for SMEs and commercial building owners, identifying retrofit measures and subsidy pathways for non-residential buildings.
• Energieberatung nach DIN V 18599 (M2) Comprehensive energy audit and consulting deliverable for non-residential buildings following DIN V 18599, qualifying as BAFA Module 2 (M2) for subsidies.
• Energiekonzept für öffentliche Gebäude Energy concept for public-sector non-residential buildings, supporting municipalities and institutions in planning subsidized decarbonization measures.
• Energieausweise (Wohngebäude & Nichtwohngebäude)

Quantifiable outcome

• iSFP bonus increases subsidy rate from 15% to 20% for building envelope measures and doubles eligible cost caps
• +2 more outcomes

Named customers5 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• DEKRA SE: Global testing, inspection and certification organization with a German energy consulting practice including energy audits, efficiency-house assessments, and BAFA-listed experts. Offers overlapping capabilities as part of a much wider certification and TIC portfolio.
• TÜV Rheinland Energieberatung: Major German TIC group providing BAFA-recognized energy consulting for residential and commercial buildings, including iSFP and KfW efficiency-house services. Comparable service lines delivered under a much broader industrial-services brand.

Direct peers

• EnergieAgentur.NRW: North Rhine-Westphalia's state energy agency providing energy consulting, BAFA application support, and renovation roadmaps to residential and commercial customers in NEX's exact operating region. Direct overlap on iSFP, BAFA, and KfW advisory services.
• Deutsche Energie-Agentur (dena): Federal energy agency providing energy consulting standards, Energieberater training, and program administration tied to BAFA/KfW subsidies. Comparable at the regulatory-and-advisory intersection that defines NEX's service offering.
• co2online GmbH: Berlin-based non-profit energy consulting provider offering subsidized building energy advice, BAFA-related services, and modernization guidance across Germany. Closely comparable service portfolio and BAFA-anchored revenue model to NEX, though operating at national rather than regional scale.
• Verbraucherzentrale NRW Energieberatung: Consumer center offering independent energy consulting—including BAFA-subsidized Energieberatung and renovation planning—to households across NRW. Directly competes on subsidized residential energy consulting within the same geography.

Others

• Stadtwerke Düsseldorf – Energiedienstleistungen: Local municipal utility offering energy consulting, heat-pump advice, and subsidy guidance to households and businesses in the same Düsseldorf catchment. Tangential competitor on customer-facing energy advisory but primarily an energy supplier rather than a certified BAFA advisor.

Emerging players

• Enerix Franchise GmbH: German franchise network of energy consultants and installers focused on photovoltaics, heat pumps, and storage with associated energy consulting. Comparable end-customer focus (residential energy renovation) with stronger product/installation footprint than NEX.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/nex-nord-energie-experten
• Instagraminstagram.com/nordenergieexperten?igsh=MWN0cG1tNnJ5a2IxdQ%3D%3D&utm_source=qr

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 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 NEX Nord Energie Experten