Kraft und Wärme a Biomasse

What Kraft und Wärme a Biomasse does

KWB Energiesysteme GmbH, legally known as Kraft und Wärme a Biomasse and trading as KWB, is an Austrian manufacturer of biomass heating systems founded in 1994 and headquartered in St. Margarethen/Raab, Austria, with approximately 400 employees. The company designs and produces a comprehensive portfolio of wood-fueled central heating boilers spanning 2.4 kW to 500 kW, including pellet boilers (Easyfire 1/2/3, Pelletfire Plus), wood chip boilers (Multifire 2, Powerfire 1/2), log wood gasification boilers (Classicfire 1/2), and the Combifire combination unit, supported by air-water heat pumps, the Empa series of thermal storage systems, photovoltaic and battery storage, solar thermal, Power-to-Heat modules, and pellet storage and conveyor systems. Its proprietary technology stack centers on the cleanEfficiency low-emission combustion technology, the Belt Burner (Chenille Brenner) for variable wood chip quality, and the Clee intelligent energy management platform that coordinates generation and consumption across the full system.

The company's business model is built on hardware sales of boilers and system components, augmented by professional services including planning and installation support, maintenance, and long-term warranty backed by a 15-year spare parts guarantee. KWB serves three primary segments — residential homeowners seeking energy independence, agriculture and forestry operations using on-site wood resources, and commercial/trade buyers requiring 150–500 kW solutions — across direct subsidiaries in Austria, Germany, France, and Italy, supported by a dense installer and heating-engineer partner network and distribution partners in 16 additional countries spanning all continents. With more than 140,000 customers served over 30 years and its Easyfire 2 best-seller deployed in over 10,000 households, KWB monetizes primarily through unit-priced, quote-based equipment sales that benefit from regional renewable heating subsidies of up to 70% in Germany and up to €8,500 in Austria. Pricing is opaque publicly; contracts are multi-year in nature given the capital-good lifecycle, and customer acquisition is driven by a mix of showrooms, an online heating configurator, social media content, and installer referrals rather than large enterprise deals.

Name

Kraft und Wärme a Biomasse

Legal name

KWB Energiesysteme GmbH

Website

https://kwb.net

Company type

Private

Founded year

1994

Operating status

Operating

Headcount range

11–50 employees

Ownership category

akta.pro rank

Product category

Biomass Heating Equipment Manufacturing

NAICS

Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341)

SIC

Heating Equipment, Except Electric & Warm Air Furnaces (3433)

akta.pro primary industry

Biomass Heating Systems (Commercial/Institutional Boilers) (EUAAAGAE)

akta.pro secondary industries

Heat Recovery & Thermal Integration for Biomass Plants (Economizers, ORC, Heat Exchangers) (EUAAAGAL), Onsite Low-Carbon Heat & CHP (Electrified CHP, Fuel Cells, Renewable CHP) (EUABAJAI)

Keywords

• Biomass heating systems
• Wood pellet boilers
• Wood chip boilers
• Heat pump systems
• Renewable heating solutions

Headquarters

HQ city

Mertingen

HQ country

Germany

HQ region

Europe

Offices6 records

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Biomass Heating Equipment Sales: KWB generates revenue primarily through the sale of biomass heating equipment including pellet boilers, wood chip boilers, log wood boilers, and combination boilers. The products range from residential (2.4-38 kW) to commercial and agricultural (up to 500 kW) applications.
2. System Solutions and Components: Revenue from complete energy system solutions including photovoltaics, solar thermal systems, storage tanks, control technology, fuel storage and conveyor systems, and heat pumps for hot water preparation.
3. Service and Maintenance: Comprehensive customer service including planning and installation support, extensive maintenance services, and long-term warranty services provided through their dense service network.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels4 records

Core offering

KWB manufactures and sells biomass central heating systems, including pellet, wood chip, log wood, and combination boilers (2.4 to 500 kW), complemented by heat pumps, storage systems, solar thermal, photovoltaic/battery storage, and the Clee intelligent energy management system. The company provides complete renewable energy system solutions for energy self-sufficient residential, agricultural, and commercial buildings through direct sales, subsidiaries, and partner networks across Europe and worldwide.

Product overview

KWB (Kraft und Wärme a Biomasse / KWB Energiesysteme) is an Austrian biomass heating specialist founded in 1994, offering a comprehensive portfolio of wood-based heating systems and renewable energy solutions. The core product line consists of four main categories of boilers: (1) Pellet boilers under the Easyfire and Pelletfire Plus/ Powerfire brands spanning 2.4-500 kW, (2) Wood chip boilers under the Multifire and Powerfire brands spanning 20-500 kW, (3) Log wood gasification boilers under the Classicfire brand spanning 15-38 kW, and (4) Combination boilers (Combifire) that run on both log wood and pellets. Complementing the boiler portfolio are KWB EasyAir Plus air-water heat pumps (8-24 kW) and supplementary hot water heat pumps (EmpaAir series), plus EmpaTherm/EmpaEco/EmpaCompact/EmpaWell/EmpaFresh storage systems. The ecosystem is tied together by the Clee intelligent energy management system that coordinates all generation and consumption devices, while the KWB heating configurator enables customer configuration. The company also offers complete system solutions including photovoltaic/battery storage, solar thermal, and Power-to-Heat components, along with pellet and wood chip storage and conveyor systems. Products span from entry-level models (Easyfire 1, Classicfire 1) for residential use to high-capacity systems (Powerfire 2 up to 500 kW) for commercial and industrial applications.

Differentiator

Problem solved

Functional benefit

Brands

• Clee: Intelligent energy management system that connects all energy generators and consumers in the home
• KWB EmpaTherm
• KWB EmpaEco
• KWB EmpaCompact
• KWB EmpaWell
• KWB EmpaFresh
• KWB EasyAir Plus

Products and services

• KWB Easyfire 1 Entry-level automatic pellet boiler with 10-20 kW output, designed as a compact starter installation for residential homes.
• KWB Easyfire 2 Best-selling fully automatic pellet boiler with 2.4-38 kW output range and integrated Clee energy management, suitable for single and multi-family homes.
• KWB Easyfire 3 Next-generation technology carrier pellet boiler with 40-60 kW output range, featuring advanced technology for enhanced efficiency and performance.
• KWB Pelletfire Plus Robust and economical pellet boiler with 45-135 kW output range, suitable for commercial applications, housing developers, and heat service providers.
• KWB Powerfire 1 Silent high-capacity pellet and wood chip boiler with 150-300 kW output for agricultural and commercial use.
• KWB Powerfire 2 High-performance pellet and wood chip heating system with 400/500 kW output, designed for large-scale commercial and industrial applications.
• KWB Multifire 2 Versatile wood chip boiler with 20-120 kW output range featuring track burner (Belt Burner) technology that handles different fuel qualities efficiently.
• KWB Classicfire 1 Entry-level log wood gasification boiler with 15-20 kW output, featuring a compact, space-saving, and efficient design.
• KWB Classicfire 2 Log wood gasification boiler with 18-38 kW output and large wood refilling compartments, enabling long refilling intervals.
• KWB Combifire Flexible combination boiler for log wood and pellets with 18-38 kW output, offering maximum independence by automatically switching between fuel types.
• KWB EasyAir Plus Smart air-water heat pump with 8-24 kW output, suitable for single and multi-family homes, agriculture, and forestry applications.
• Clee - Intelligent Energy Management System Intelligent energy mix optimizer developed by KWB that connects all energy generators and consumers in a building to form a complete system, maximizing efficiency and adapting to user needs.
• KWB Empa Storage Systems Thermal storage systems including EmpaTherm (solar), EmpaEco (ecological), EmpaCompact (space-efficient), EmpaWell (wellness), and EmpaFresh (fresh water with legionella protection) for residential heating installations.
• Photovoltaic & Battery Storage Systems Solar photovoltaic systems combined with battery storage for residential energy self-sufficiency, integrated with KWB heating systems.
• Solar Thermal Systems Solar thermal installations for residential water heating and space heating support, complementing biomass boilers.
• Power-to-Heat Systems Power-to-Heat conversion systems enabling the use of excess solar photovoltaic electricity for heating applications in residential buildings.
• Pellet Storage & Conveyor Systems Complete pellet storage solutions (earth tanks, pellet boxes, storage containers, fabric tanks) and conveyor systems (suction conveying, screw conveyors, bunker filling screws, stirring systems) for automated fuel supply.

Quantifiable outcome

• KWB Easyfire 2 is the most sold pellet heating boiler
• +2 more outcomes

Named customers5 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators5 records

Recent moves3 records

Expansion highlights6 records

Direct peers

• ETA Heiztechnik: Austrian manufacturer of wood chip, pellet, and log wood boilers for residential and commercial applications with a comparable product strategy and DACH sales focus.
• Froling: Austrian manufacturer of biomass heating boilers (pellet, wood chip, log wood) for residential and commercial applications, with a comparable product portfolio to KWB and overlapping DACH market positioning.
• ÖkoFEN: Austrian specialist in pellet heating systems with condensing technology, directly competing with KWB Easyfire and Pelletfire lines across European residential and light-commercial customers.
• Hargassner: Austrian manufacturer of pellet, wood chip, and log wood heating systems serving residential and commercial customers across DACH and select international markets — directly analogous to KWB in product scope and geography.
• Windhager: Austrian biomass and heating technology maker with pellet, wood chip, log wood boilers and complementary heat pumps; closely comparable to KWB's full system offering.

Broad incumbents

• Viessmann: Large German heating, industrial, and refrigeration systems provider with broad coverage including biomass boilers, heat pumps, and solar; competes with KWB primarily in larger commercial installations and integrated home energy.
• Bosch Thermotechnology: Global heating, hot water, and air conditioning brand offering biomass, heat pumps, and hybrid systems across residential and commercial segments — broad incumbent competitive threat in Europe.
• Vaillant Group: European manufacturer of heating, ventilation, and heat pump systems; overlaps with KWB where Vaillant offers biomass-compatible solutions and where both compete in the residential decarbonization segment.
• Nibe Energy Systems: Swedish-based European leader in heat pumps and heating solutions, increasingly relevant as the biomass-versus-heat-pump competitive dynamic intensifies in European residential heating.
• Stiebel Eltron: German heat pump and heating technology manufacturer with extensive European distribution; competes with KWB in the renewable heating equipment space, particularly as electrification drives heat pump adoption.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@kwb.energiesysteme
• Facebookfacebook.com/kwb.energiesysteme
• LinkedInlinkedin.com/company/kwb-energiesysteme
• Instagraminstagram.com/kwb.energiesysteme

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries3 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 Kraft und Wärme a Biomasse