The centerpiece of the CHP: the gas-powered engine.

CHP units for heat and power

Using a process often referred to as cogeneration, our compact Vitobloc 200 appliances are designed as decentralised combined heat and power boiler units with a bias towards heating. These comparatively small units generate electricity for consumption on site. The heat that is generated by this process is used simultaneously, almost without losses, for heating and hot water. Any additional power that is generated can be exported back to the grid in return for remuneration. 


Combined heat and power boiler units up to 530 kWel and 660 kWth

Utilising a CHP unit in a commercial setting is extremely environmentally friendly. In addition to the primary energy savings of up to 36 percent, the CO2 emission is significantly lower than with conventional production of electricity and heat.

With more than 25 years' experience in this product area, we offer efficient gas operated systems for combined heat and power generation.

The types of combined heat and power boilers we offer:

Stirling engine CHP boilers

Stirling engine CHP boilers use an external combustion engine. When the boiler is fired up, the engine is heated to produce hot water. Stirling engine CHP boilers are generally quieter and more efficient than internal combustion engines.

Internal engine CHP boilers

Designed to be used for larger-scale applications such as hospitals, internal engine CHP boilers use fuel to drive a turbine connected to an electricity generator. The heat generated from this process is collected and used to produce hot water for the heating system and water supply.

Where will using a combined heat and power boiler be beneficial?

Our comprehensive range of CHP units are designed for a wide range of applications requiring medium output in commercial and industrial enterprises.

Our Vitobloc 200, module EM-20/39, used in combination with a peak load boiler, for instance, is ideal for medium-sized hotels, care homes and showrooms. With an overall efficiency of 94.9%, the CHP unit operates highly efficiently thanks to its condensing technology and is recommended both for new build and modernisation projects.

The benefits of using a CHP boiler in a commercial environment

◾CHP technology qualifies for the UK government’s Climate Change Levy Exemption
◾High electrical efficiency, resulting in the highest possible power bias for maximum economy
◾Viessmann CHP units are equipped for mains substitution operation with no increase in the idle current demand
◾Suitable for operation with natural gas, biogas, sewer and landfill gas
◾Remote monitoring and automation systems allow for greater control
◾CHP units operate with great environmental responsibility. In addition to the primary
energy savings of approx. 36%, CO2 emissions are significantly lower compared
to a conventional central power station

Combined heat and power