In the moment we recommend the following engines. They are all very reliable and durable and have a good ratio between CAPEX, OPEX and return.
These engines have the best ratio between CapEx, OpEx and return.
We analysed the capital expendidures (CapEx) for different solutions. They are declining the bigger the engines are. Small engines are very expensive.
But from a certain point on, the investment costs do not decline any more.
Very important are the operational exenditures (OpEx) for the CHP.
Of course, small engines have relativly high runnings cost. But from a certain point on, the costs are rising once more.
Per produced kW of electricity some engines cause 50% higher cost than others.
Perfect are solutions in the range of 500 kW
What is the reason for the rising OpEx? A detailed look on the technology provides the answer.
The higher the efficiency, the higher are the operational expenditures.
Therefore, take a solution with a state of the art efficiency, not with the latest features.