INGA

What INGA does

INGA - Ingenieurgesellschaft für Gebäudeautomation mbH is a German software company founded in 1986 and headquartered in Hameln, operating as a wholly owned subsidiary of enercity Contracting GmbH since January 2019. The company develops and maintains two proprietary software platforms: iBMS, a browser-based, BTL-certified BACnet Advanced Operator Workstation (B-AWS) that integrates heterogeneous building automation systems across vendors via open protocols (BACnet, OPC UA, Modbus, M-Bus, LON, KNX) and proprietary factory modules; and EIQ, a BAFA-listed energy monitoring and controlling system now integrated within iBMS for real-time consumption transparency, ISO 50001 compliance, and BAFA-subsidized deployments. Over 40 years of accumulated protocol and device expertise is encapsulated in proprietary factory modules, enabling manufacturer-neutral deployments in critical infrastructure, healthcare, public sector, retail, hospitality, and Mittelstand environments across the DACH region.

The company sells iBMS and EIQ through two complementary channels: a direct sales function led by Head of Sales Nadine Klostermann at the Hameln headquarters, and a nationwide network of approximately 30 trained system partners (Fachpartner) including Böhnlein, RAUCHER Gebäudeautomation, BAT, and HERMES Systeme who resell, deploy, and service INGA solutions. Revenue is generated across four streams: subscription-based software licenses with multi-year maintenance contracts (1, 3, or 5-year terms), bundled hardware (MSR technology) procurement for project deployments, professional services including integration, consulting, commissioning and training, and structured training programs delivered on-site, in Hameln, or online. Customers include enercity, Stadt Mörfelden-Walldorf, Hochschule Ruhr-West, L-Bank Baden-Württemberg, Zalando, SLK-Kliniken Heilbronn, tesa SE, Meininger Hotel Bremen, DLR, and CCH Congresscenter Hamburg, among over 1,000 served across DACH.

Recent strategic priorities have centered on regulatory compliance and platform consolidation: iBMS Version 11.4 (June 2025) introduced an Automation Engine workflow module, Version 11.5 (October 2025) added 2-Factor-Authentication and NIS2-aligned security features, the 2024 EIQ overhaul unified it inside iBMS, and BTL certification was renewed in 2026 under Revision 1.22. Leadership transitioned in early 2026 with Nikolas Fähnrich succeeding Corinna Kleimann as Managing Director alongside Michael Hartung. The company operates from a single site in Hameln where development, sales, service, and support are co-located, with active hiring in software development and support functions through Q1 2026.

Name

INGA

Legal name

INGA - Ingenieurgesellschaft für Gebäudeautomation mbH

Website

https://inga-hameln.de

Company type

Private

Founded year

1986

Operating status

Operating

Headcount range

11–50 employees

Short description

INGA is a German building automation software company founded in 1986 in Hameln, developing the browser-based iBMS building management system and EIQ energy management system. It serves over 1,000 customers across the DACH region via direct sales and a 30-partner Fachpartner network, targeting Mittelstand, corporations, public institutions, and critical infrastructure operators.

Ownership category

akta.pro rank

Product category

Building Automation Software

NAICS

Computer Systems Design and Related Services (54151), Computer Systems Design Services (541512)

SIC

Services-Computer Integrated Systems Design (7373), Auto Controls For Regulating Residential & Comml Environments (3822)

akta.pro primary industry

Smart Building Software Platforms (IWMS/CAFM Integration, Digital Twin, Command Center) (BPABAGAG)

akta.pro secondary industries

Building Automation Systems (BAS/BMS) Integration & Controls (BPABAGAA), Building Automation & Controls (BAS/BMS, HVAC Controls) (IMAIABAD)

Keywords

• Building automation software
• Building management systems
• Energy management software
• BACnet operator workstation
• Facility automation solutions

Headquarters

HQ city

Hameln

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. Softwarelizenzen und Softwarepflege (iBMS & EIQ): INGA sells its proprietary iBMS building management software and EIQ energy management software as licenses, with associated software maintenance (pflege) contracts. Software pflege contracts are offered in 1, 3, or 5-year terms, providing security updates, compatibility, support, and ongoing improvements.
2. Hardware-Bereitstellung im Projektgeschäft: INGA procures and supplies required hardware (measurement, control, and regulation technology - MSR) as part of project implementation services, bundled with its software solutions.
3. Dienstleistungen und Service: Full-service project delivery including system integration, consulting, planning, project engineering, commissioning, documentation, training, and ongoing operational support. Services are provided to both direct customers and system partners.
4. Schulungen (Training): INGA offers structured training programs for iBMS and EIQ, including operator training, administrator training, update training, and individual/custom training sessions. Offered at INGA's Hameln location, on-site, or online.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels8 records

Core offering

INGA develops and sells the iBMS browser-based, manufacturer-neutral building management system (Gebäudemanagementsystem) and the EIQ energy monitoring and controlling system. The software integrates diverse building automation systems via open (BACnet, OPC UA, Modbus, M-Bus, LON, KNX) and proprietary protocols, providing centralized monitoring, control, and energy management for technical building equipment across multiple sites.

Product overview

INGA offers two core software products that work together as an integrated solution portfolio. The primary product is iBMS, a browser-based, manufacturer-neutral building management system (Gebäudemanagementsystem) that provides centralized monitoring, control, and alarm management for technical building equipment across diverse manufacturers and automation systems. EIQ is an add-on energy management module that integrates into iBMS to provide real-time energy monitoring, consumption analysis, cost control, and sustainability reporting. The iBMS serves as the core platform while EIQ extends it with specialized energy intelligence capabilities. Together they form what INGA describes as the 'perfect duo' for building automation and energy efficiency, supporting both new construction and retrofit projects in existing buildings.

Differentiator

Problem solved

Functional benefit

Brands

• iBMS: Browser-based building management system (Gebäudemanagementsystem) certified as BACnet Advanced Operator Workstation (B-AWS)
• EIQ

Products and services

• iBMS — Building Management System (Gebäudemanagementsystem) Browser-based, manufacturer-neutral building management system (Gebäudemanagementsystem) that integrates and controls diverse building automation systems, HVAC equipment, and facility management operations across multiple buildings and vendors via open (BACnet, OPC UA, Modbus, M-Bus, LON, KNX) and proprietary protocols. BTL-certified as BACnet Advanced Operator Workstation (B-AWS) and BACnet/SC ready. Targets facility operators, IT/OT teams, and energy managers in mid-market, enterprise, KRITIS, and public sector organizations across DACH.
• EIQ — Energy Monitoring and Controlling System (Energiemanagementsystem) Web-based energy monitoring and controlling system providing real-time transparency of energy consumption, costs, and emissions across buildings and facilities. BAFA-listed, compliant with DIN EN ISO 50001, GEG, and ESG reporting requirements; eligible for government subsidies up to 45% (small enterprises). Integrates into iBMS as a module or operates standalone.
• iBMS and EIQ Schulungen (Training Programs) Structured training programs for iBMS and EIQ, including operator, administrator, update, and individual/custom training sessions delivered at INGA's Hameln location, on-site at customer premises, or online.
• iBMS/EIQ Implementation and Integration Services (Dienstleistungen) Full-service project delivery for iBMS and EIQ including system integration, consulting, planning, project engineering, commissioning, documentation, and ongoing operational support, delivered by INGA's in-house service teams in Hameln and through certified system partners.
• MSR Hardware Provisioning (Mess-, Steuerungs- und Regelungstechnik) Procurement and supply of required measurement, control, and regulation (MSR) hardware as part of INGA's project implementations, bundled with the iBMS and EIQ software solutions.

Quantifiable outcome

• Energy cost reduction of up to 30% through optimized building management and energy control systems
• +3 more outcomes

Named customers19 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

Integration7 records

Feature8 records

Partnerships

Ten partnerships are on record, tiered core and minor.

• BöhnleincoreChannel Partner/ Reseller/ DistributorBöhnlein is a system partner executing INGA software implementations (iBMS/EIQ) across Germany, including projects for public institutions (Stadt Mörfelden-Walldorf), banks (L-Bank), energy utilities (Gasversorgung Unterfranken), and hotels (Schloss Hohenkammer).
• RAUCHER GebäudeautomationcoreChannel Partner/ Reseller/ DistributorRAUCHER Gebäudeautomation is a system partner implementing INGA solutions across Germany, including projects for Kreisverwaltung Trier-Saarburg and Volksbank Westerwald.
• BAT GmbHcoreChannel Partner/ Reseller/ DistributorBAT is a system partner implementing INGA iBMS and EIQ, with projects including Agentur für Arbeit Hannover, SÜWAG Energie AG, tesa SE, Mercure Hotel Berlin, and CCH Congresscenter Hamburg.
• HERMES Systeme GmbHcoreChannel Partner/ Reseller/ DistributorHERMES Systeme is a system partner implementing INGA software solutions, with projects including Meininger Hotel Bremen and Deutschlandhaus Hamburg. HERMES celebrated its 40th anniversary in June 2025 with INGA representatives in attendance.
• GLR mbHminorChannel Partner/ Reseller/ DistributorGLR mbH hosted an NUI (Netzwerk- und Innovationstreffen) event in Rostock where INGA presented its iBMS and EIQ solutions. Annual networking event collaboration.
• M&P GruppeminorImplementation/ SI/ Consulting PartnerM&P Gruppe served as a guest speaker at INGA's Systempartnertreffen 2025, presenting on NIS2 and KRITIS requirements alongside INGA's technical responses.
• scope & focus Service-Gesellschaft mbHminorOthersscope & focus (Hannover) serves as INGA's appointed Data Protection Officer (Datenschutzbeauftragter) as required by GDPR.
• Ostfalia Hochschule für angewandte WissenschaftencoreStrategic or Co-development PartnerINGA has been an active member of the Ostfalia University's advisory board (Beirat Energie- und Gebäudetechnik) since 2007. The board comprises companies from planning, energy supply, manufacturing, and plant engineering. INGA contributes practical feedback on curriculum, supports dual study programs, and provides annual financial support for scholarships and student recruitment. INGA also works with Hochschule Weserbergland for dual study programs.
• LinkedIn Ireland Unlimited CompanyminorOthersJoint controllership relationship for INGA's LinkedIn company page. LinkedIn processes personal data of account holders visiting the INGA company profile.
• Meta Platforms Ireland Limited (Facebook/Instagram)minorOthersJoint controllership relationship for INGA's Facebook and Instagram pages. Meta processes personal data of account holders visiting the INGA social media profiles.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Kieback&Peter: Berlin-based German BMS manufacturer and software vendor with proprietary automation systems (P90, DDC) similar to those INGA integrates via its Fabrikatsmodule. Comparable DACH customer base and long-tenured product history.
• KMC Controls: US-based BMS and BACnet specialist with similar manufacturer-neutral integration heritage, comparable mid-market customer profile, and a comparable mix of proprietary hardware/software offering.
• Reliable Controls: Canadian independent BMS vendor offering manufacturer-neutral BACnet-native building management software and HVAC controls, directly comparable in scale, business model, and customer segment to INGA's Mittelstand-focused iBMS.
• Tridium (Honeywell): Tridium's Niagara Framework is the most widely deployed open-integration BMS software platform, providing the same manufacturer-neutral multi-protocol building integration role as INGA's iBMS — making it the closest global software-only analog and a direct substitute.
• Sauter Controls: Sauter is a Swiss-headquartered BMS and building automation specialist with a comparable product portfolio (BMS software, energy management, room/zone controls) and a similar target audience of European Mittelstand, KRITIS, and public sector clients. Closest 1:1 product overlap with INGA's iBMS and EIQ.
• LOYTEC (L-INK/Loytec): Austrian building automation specialist offering BMS software (LWEB) and infrastructure supporting BACnet, KNX, LonWorks, Modbus, OPC — an almost identical multi-protocol manufacturer-neutral posture to INGA in the same Central European market.

Broad incumbents

• Siemens Smart Infrastructure (Desigo CC): Siemens offers Desigo CC as a certified B-AWS / BTL BMS competing directly with iBMS in the same DACH accounts INGA serves — albeit bundled inside Siemens' much broader building products / fire safety / digital industries portfolio.
• Honeywell Building Technologies: Honeywell's Building Technologies division (which owns Tridium/Niagara) bundles BMS, security, and energy SaaS at enterprise scale, competing with INGA's iBMS in the same KRITIS and large-corporate accounts across Europe.
• Johnson Controls (Metasys / OpenBlue): Johnson Controls' Metasys BMS and OpenBlue digital platform are direct large-vendor competitors to INGA iBMS, especially in European KRITIS, healthcare, and education verticals where INGA has multiple reference customers.
• Schneider Electric (EcoStruxure BMS): Schneider's EcoStruxure Building Operation competes with iBMS and increasingly with EIQ in European enterprise energy and BMS accounts, bundled with Schneider's broader power management and sustainability reporting suite.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/ingambh
• LinkedInlinkedin.com/company/2337675/admin/dashboard
• Instagraminstagram.com/ingahameln/?hl=de
• Xx.com/INGA_mbH

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 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 INGA