Domestic CHP


Generate electricity locally with 100% efficiency (no waste heat)

“If the costs of micro-CHP systems can be reduced with economies of scale to make them sufficiently attractive to consumers, the potential benefits could be substantial.” – The Carbon Trust “Micro-CHP Accelerator” Final Report

By producing both useful heat and electricity locally, combined heat and power (CHP) systems can potentially achieve lower overall carbon emissions and lower operating costs than conventional heating systems and grid electricity. The ARC500 waste heat recovery product is well suited to this application. Our Exergy Analysis shows just how poor the performance of a typical domestic heating system is.

The following quotes are taken from the Carbon Trust’s “Micro-CHP Accelerator” Final Report.

“At market introduction, the marginal cost of a Stirling engine micro-CHP system over an equivalent condensing boiler is expected to be around £2,500. At this price, the value of the electricity generated by the microCHP systems in the field trial is insufficient on its own to provide an attractive payback for the majority of consumers.”

Aptovis ARC products are a lower cost approach compared to a Stirling Engine. Aptovis products have been designed from the outset to be suitable for low cost, high volume manufacturing. Aptovis uses the same core technology across multiple markets to drive the costs down significantly.

“If the costs of micro-CHP systems can be reduced with economies of scale to make them sufficiently attractive to consumers, the potential benefits could be substantial. In the domestic sector, there are up to 8 million houses in the UK with a high enough annual heat demand to ensure that micro-CHP systems would achieve a significant carbon saving over A-rated condensing boilers.”

“A key challenge is therefore to reduce the installed cost of micro-CHP systems through economies of scale and optimised design and manufacturing to provide an attractive payback for consumers.”

Aptovis has addressed the issue by developing an alternative to the conventional CHP system that has lower manufacturing costs, is suited to high volume manufacture and has good performance.

Electricity derived from CHP systems is effectively generated with 100% efficiency, as all of the “waste” heat from the electricity generation system can be reused by the heating system.