Combined Heat and Power (CHP), also known as cogeneration, enables the simultaneous production of electricity and usable heat from a single energy source, significantly improving overall system efficiency. CHP plays a key role in modern energy strategies where efficiency, flexibility, and security of supply are increasingly critical.

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In many CHP plants, electricity is generated using a steam turbine, while the remaining thermal energy is utilised for district heating or industrial processes. In real-world operation, however, heat demand and electricity demand rarely develop in parallel. Designing a CHP system that can reliably and efficiently respond to these differing demand profiles is therefore a central engineering and economic challenge.

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AZG Consulting supports plant owners, developers, and EPC contractors in the conceptual design and optimisation of CHP systems where operational flexibility is a key requirement. Instead of relying solely on conventional steam extraction concepts — which often reduce turbine efficiency — alternative system configurations can be evaluated that allow a more flexible separation of heat and power generation.

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One proven approach involves the selective mechanical decoupling of turbine stages using freewheel clutch technology, such as the SSS Clutch. From a system perspective, this enables individual turbine sections to be fully disengaged when required, allowing CHP plants to adapt their operating mode without compromising base-load efficiency or machine integrity.

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By incorporating such concepts at an early project stage, CHP plants can:

• Optimise the interaction between power generation, heat supply, and thermal storage

• Improve overall asset utilisation across varying load conditions

• Operate as dispatchable generation units capable of responding to grid requirements

• Reduce operational constraints caused by fixed heat‑to‑power ratios

 

AZG Consulting provides technology-neutral advisory services, supporting feasibility studies, system comparisons, and lifecycle assessments to determine whether advanced mechanical decoupling concepts are technically and economically justified for a given application.

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This type of CHP configuration is also particularly relevant for Small Modular Reactor (SMR) concepts, where constant thermal output is typically preferred, while electrical output must remain adaptable to grid demand. AZG Consulting assists clients in evaluating CHP and cogeneration concepts in the context of emerging SMR and advanced energy systems.

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With long-standing experience in power generation, turbomachinery, and rotating equipment, AZG Consulting acts as an independent partner — bridging the gap between plant operators, OEMs, and technology suppliers to deliver robust, efficient, and future‑proof CHP solutions.