IWK Integrierte Warme und Kraft AG

What IWK Integrierte Warme und Kraft AG does

IWK Integrierte Warme und Kraft AG is a privately held Swiss engineering company founded in 1989 and headquartered in Oberohringen/Seuzach (canton Zurich), specializing in the sale, installation and lifecycle servicing of Blockheizkraftwerk (BHKW) combined heat and power systems. Operating from three regional offices (Seuzach/ZH, Bubendorf/BL and Cornaux/NE) with approximately 60 employees, IWK acts as the authorized Swiss distributor and integrator for INNIO Jenbacher engines (300 kW to 10.4 MW electrical) and 2G Energy agenitor units (under 300 kW), with additional Swiss representation of SynCraft wood gasification systems and Sewerin gas measurement devices. The company claims the leading installed base in Swiss CHP, with 600+ BHKW modules commissioned since 1989 and 400+ plants under active service.

The technical portfolio spans multi-fuel capability across natural gas, biogas, sewage gas (Klärgas), wood gas, and hydrogen, with all products certified H2-Ready for up to 20% hydrogen blending without hardware modification and convertible to pure hydrogen during routine revisions. Notable technical features include containerized plug-and-play configurations, fast-start capability reaching full load in 15 seconds, SCR catalytic emission control achieving NOx below 100 mg/Nm3, primary energy utilization above 90% (vs. ~30% for conventional power plants), and up to 93% total efficiency in greenhouse applications. IWK is pre-qualified by Swissgrid for regulation energy services (SRL/TRL), enabling customers to monetize grid balancing.

The business model combines one-time hardware sales (BHKW systems ranging from 20 kW to 10,000 kW) with recurring service revenue across four tiers — material supply, regular maintenance, full maintenance (including machine breakdown insurance), and operating materials (oil, AdBlue, activated carbon) — supplemented by remote monitoring and a 24/7 emergency hotline. Go-to-market is direct enterprise sales via regional sales managers, organized by function (sales, projects, service) and geography (Mittelland/Central Switzerland and Western Switzerland). End customers span industrial companies, municipal wastewater treatment plants, municipalities and energy utilities, agricultural and biogas producers, plus emerging greenhouse and wood gasification applications.

Name

IWK Integrierte Warme und Kraft AG

Legal name

IWK Integrierte Wärme und Kraft AG

Website

https://iwk.ch

Company type

Private

Founded year

1989

Operating status

Operating

Headcount range

11–50 employees

Short description

IWK Integrierte Wärme und Kraft AG is a Swiss specialist in combined heat and power (CHP/BHKW) systems, distributing and servicing INNIO Jenbacher and 2G Energy modules across industrial, municipal, wastewater, agricultural, and greenhouse customers in Switzerland and bordering regions.

Ownership category

akta.pro rank

Product category

Cogeneration Equipment (Combined Heat and Power Systems)

NAICS

Plumbing and Heating Equipment and Supplies (Hydronics) Merchant Wholesalers (423720), Power Boiler and Heat Exchanger Manufacturing (332410)

SIC

Cogeneration Services & Small Power Producers (4991), Engines & Turbines (3510)

akta.pro primary industry

Waste-to-Energy CHP & District Heating Integration (Heat offtake systems) (EUAAAKAH)

akta.pro secondary industries

Heat Recovery & Thermal Integration for Biomass Plants (Economizers, ORC, Heat Exchangers) (EUAAAGAL), HVAC & Industrial Ventilation (Chillers, AHUs, Exhaust, Filtration) (EUAEAFAE)

Keywords

• Combined heat and power
• Cogeneration systems integrator
• Biogas energy solutions
• Hydrogen-ready CHP
• BHKW maintenance services

Headquarters

HQ city

Sarnen

HQ country

Switzerland

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. BHKW Equipment Sales and Installation: Complete BHKW system delivery, integration, commissioning, and installation. Systems range from 20 kW to 10,000 kW electrical capacity. Products sourced from INNIO Jenbacher and 2G Energy manufacturers.
2. Service and Maintenance Contracts: Comprehensive service contracts including material/parts supply, regular maintenance, full maintenance (including machine breakdown insurance), troubleshooting, and 24/7 emergency hotline.
3. Operating Materials Supply: Supply of consumables including lubricating oil management, AdBlue, and activated carbon filters for BHKW operation.
4. Monitoring and Operational Support: Remote monitoring, troubleshooting, and ongoing operational support for installed BHKW systems.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels4 records

Core offering

IWK Integrierte Wärme und Kraft AG sells, installs, commissions, and services Combined Heat and Power (CHP / BHKW) systems across Switzerland and bordering countries. The company acts as the Swiss representative for INNIO Jenbacher and 2G Energy BHKW modules (20 kW to 10 MW electrical range) and for SynCraft wood gasification plants. Offerings span hydrogen-ready units, biogas, sewage gas, wood gas, and natural gas fuel configurations, complemented by long-term service contracts, operating materials supply, and remote monitoring.

Product overview

IWK Integrierte Wärme und Kraft AG is a Swiss CHP (Combined Heat and Power) specialist offering BHKW (Blockheizkraftwerke) systems as its core product line. The portfolio includes BHKW modules from INNIO Jenbacher (0.25-10.4 MWel) and 2G Energy agenitor (under 300 kWel), complemented by SynCraft wood gasification systems for climate-positive energy production. Solutions span multiple fuel types including natural gas, biogas, sewage gas, wood gas, and hydrogen, with both standard and container configurations. The company provides end-to-end services from planning and installation through maintenance and operation, with pre-qualification for Swissgrid regulation energy services.

Differentiator

Problem solved

Functional benefit

Products and services

• BHKW (Combined Heat and Power) Systems Complete CHP / cogeneration systems that generate electricity and heat simultaneously on-site with over 90% primary energy utilization. Available in power ranges from 20 kW to 10 MW electrical, supplied as INNIO Jenbacher and 2G Energy modules. Sold and installed for industrial, municipal, agricultural, greenhouse, and wastewater treatment customers across Switzerland.
• INNIO Jenbacher BHKW Modules Large-scale Jenbacher gas engine CHP units supplied by IWK as authorized Swiss representative, covering Series 2 (0.25-0.35 MWel), Series 3 (0.4-1.1 MWel), Series 4 (0.7-1.5 MWel), Series 6 (1.8-4.5 MWel), and Series 9 (9.3-10.4 MWel / J920 flextra). Suitable for natural gas, biogas, sewage gas, hydrogen, wood gas, and special gases.
• 2G Energy BHKW Modules (agenitor) Compact 2G Energy agenitor-series BHKW units under 300 kW electrical, supplied by IWK as authorized Swiss representative. H2-Ready with up to 20% hydrogen mixing capability. Suitable for biogas, sewage gas, natural gas, hydrogen, and wood gas applications.
• Biogas BHKW Solutions BHKW systems configured for biogas applications using agricultural substrates, manure, poultry litter, and food industry waste. Converts biogas into electricity with heat recovery for fermentation processes, building heating, wood/hay drying, and greenhouse cultivation.
• Sewage Treatment Plant BHKW Solutions BHKW systems for wastewater treatment plants using sewage gas, with emergency power and island operation capability for uninterrupted operation during outages. Includes planning support for gas treatment, exhaust after-treatment, and gas storage integration.
• Hydrogen-Ready BHKW Solutions Pure hydrogen BHKW units and bivalently operated BHKW systems. All products are H2-Ready and can operate with up to 20% hydrogen blend without hardware modifications; conversion to pure-hydrogen operation is possible during routine revisions at modest cost.
• Supply Security BHKW Systems BHKW systems with emergency power and island operation capability for uninterrupted supply during outages. Includes fast-start feature reaching full load within 15 seconds and maximum output in 45 seconds. Pre-qualified by Swissgrid for regulation energy (SRL/TRL), enabling additional revenue from grid balancing services.
• SynCraft Wood Gasification Systems Climate-positive energy systems using fluidized bed reactor technology for wood gasification. Produces electricity, heat, and biochar that binds CO2. IWK is the Swiss representative for SynCraft technology.
• Service and Maintenance Contracts Full lifecycle service contracts spanning revisions, regular maintenance, full maintenance (including machine breakdown insurance), troubleshooting, remote monitoring, operating materials supply (lubricating oil, AdBlue, activated carbon), and 24/7 emergency hotline. Available at three regional offices with well-stocked spare parts warehouses. Contract tiers include Material Supply, Regular Maintenance, Full Maintenance, and Operating Materials.

Quantifiable outcome

• 90%+ primary energy utilization (vs. ~30% for conventional power plants)
• +6 more outcomes

Named customers3 records

Segments6 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Six partnerships are on record, tiered core and minor.

• INNIO JenbachercoreStrategic or Co-development Partner · 1 January 2024Joint project with INNIO Jenbacher for the Schöntal Biogas project featuring a Jenbacher J412 with 930 kW electrical capacity installed in a 2G Energy container. Project demonstrates collaborative approach combining Jenbacher engines with IWK's installation and service capabilities.
• 2G EnergycoreStrategic or Co-development Partner · 1 January 2024Joint project with 2G Energy for the Schöntal Biogas container solution. IWK serves as Swiss installer and service partner for 2G Energy container BHKW systems, providing turnkey solutions for biogas applications.
• SynCraftcoreTechnology or Integration · 1 January 2023IWK is the Swiss representative of SynCraft, a Tirol-based company spin-off from the University of Innsbruck with approximately 100 employees. SynCraft develops wood gasification systems using fluidized bed reactor technology for climate-positive energy production (electricity and heat) combined with biochar for additional CO2 sequestration. SynCraft technology amortization is achieved in 5-10 years.
• SewerinminorChannel Partner/ Reseller/ Distributor · 1 January 2023IWK is the Swiss distribution partner for Sewerin gas measuring devices, including Multitec and BioControl products. Sewerin is a family-owned technology leader based in Gütersloh, Germany, specializing in innovative measurement devices developed through decades of experience in development, construction, testing, and production.
• INNIO JenbachercoreTechnology or Integration · 1 January 1989Long-term strategic partnership since 1989 with Austrian manufacturer INNIO Jenbacher for BHKW systems in the 300 kW to 10 MW electrical range. IWK serves as authorized Swiss representative and installer. Jenbacher engine series 2, 3, 4, 6, and 9 are part of the product portfolio, suitable for natural gas, biogas, sewage gas, hydrogen, wood gas, and special gases.
• 2G EnergycoreTechnology or Integration · 1 January 1989Long-term partnership with German manufacturer 2G Energy for compact BHKW systems under 300 kW electrical. IWK serves as authorized Swiss representative and installer. 2G products include the H2-Ready agenitor series for applications including biogas, sewage gas, natural gas, hydrogen, and wood gas.

Scale indicators9 records

Recent moves6 records

Expansion highlights7 records

Broad incumbents

• INNIO Jenbacher: Global manufacturer of gas engines and CHP systems (Jenbacher brand) in the 300 kW to 10+ MW range. IWK is Jenbacher's authorized Swiss representative and installer since 1989, but Jenbacher also sells directly in other markets and through competing channel partners, making it both a supplier and adjacent incumbent.
• 2G Energy AG: German manufacturer of compact CHP systems under 300 kW (agenitor series) with strong H2-Ready positioning. IWK is 2G's Swiss representative and installer since 1989; 2G directly competes in DACH markets and serves as both partner and competitor in adjacent geographies.
• Viessmann Group: Large German family-owned heating and climate technology company offering boilers, heat pumps, and CHP/biogas solutions as part of a broader portfolio. Overlaps with IWK in industrial heat and renewable gas solutions, but operates at much greater scale across residential and commercial HVAC broadly.
• Bosch Thermotechnology: Division of Bosch offering heating, hot water, and CHP solutions for residential, commercial, and light industrial markets. Comparable in delivering combustion-based heat and power technology with service network, but at significantly larger scale and across broader HVAC portfolio.
• Rolls-Royce Power Systems (MTU Solutions): Global manufacturer of large gas and diesel gensets, CHP systems, and power solutions for industrial, data center, and utility customers. Overlaps with IWK at the higher end of the power range (>1 MW) and in emergency power/grid services, but operates at much broader scale and through direct sales.

Direct peers

• Senertec GmbH & Co. KG: German manufacturer and direct seller of the Dachs micro-CHP unit, with a regional installer/service partner network across DACH similar to IWK's model. Comparable in serving residential, small commercial, and light industrial customers with a long-tail service approach.
• ETW Energietechnik GmbH: German/Austrian CHP specialist that plans, delivers, and services biogas and natural gas CHP systems for industrial, agricultural, and municipal customers. Closely comparable to IWK in customer verticals (biogas, wastewater, municipalities) and in the integrator-plus-service business model.
• Spanner Re² GmbH: German manufacturer and project developer of wood-fired CHP systems using Holz-Kraft technology. Comparable in bringing renewable/biomass CHP solutions to mid-sized industrial, municipal, and agricultural customers, and in offering turnkey installation and long-term service.
• Hitachi Zosen Inova (formerly Schmack Biogas): Swiss-headquartered subsidiary of Hitachi Zosen delivering biogas plant engineering, gas upgrading, and CHP solutions globally. Directly comparable to IWK's biogas and wastewater treatment segments, with overlapping municipal and agricultural customer base in Switzerland and the DACH region.

Emerging players

• SynCraft Engineering GmbH: Austrian wood gasification technology company (~100 employees, university spin-off) whose Swiss representative IWK became in 2023. Comparable in targeting climate-positive energy via biomass gasification with biochar sequestration, and a partial technology partner in IWK's renewable CHP offering.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/iwk-integrierte-w-rme-und-kraft-ag

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 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 IWK Integrierte Warme und Kraft AG