From Food Processing to Agriculture: How CHP Delivers Sector-Specific Efficiency Gain

Energy efficiency remains a key consideration for organisations operating in energy-intensive environments. Where there is a simultaneous demand for heat and power, Combined Heat and Power (CHP) provides a practical and well-established solution.

By generating electricity on-site and utilising the resulting heat, CHP systems reduce energy losses associated with conventional power generation. The result is improved overall efficiency and more effective use of fuel.

CHP systems are not standardised solutions. Their performance depends on how closely they are matched to the operational requirements of each site.

Understanding CHP Efficiency

In conventional power generation, a large proportion of energy is lost as heat. CHP systems capture and use this heat, achieving overall efficiencies of up to 90%.

This results in:

·        Reduced primary energy consumption

·        Lower operating costs

·        High overall system efficiency through combined heat and power utilisation

·        Improved utilisation of fuel input compared to separate heat and power generation

·        Suitability for continuous, base-load operation

·        Compatible with a range of fuel types, including biogas and future hydrogen applications

The extent of these benefits depends on the site’s demand profile and how effectively heat can be utilised.

CHP Across Multiple Applications

CHP is often associated with specific sectors, but its application is considerably broader. Any site with a consistent requirement for both heat and electricity can be a suitable candidate.

Typical applications include:

• Manufacturing and industrial processing
• Hotels, leisure centres and spas
• Wastewater and waste treatment facilities
• Agricultural and on-farm energy systems

The common requirement across these environments is the effective use of both thermal and electrical energy generated on-site.

Food Processing: Reliable Energy for Continuous Operations

Food processing facilities require a consistent and reliable supply of both electricity and heat. Processes such as cooking, pasteurisation, sterilisation, and cleaning all depend on controlled thermal input, often alongside continuous electrical demand.

Operational Requirements:

• Continuous or high-load operation
• Controlled and stable temperatures
• High standards of process reliability and hygiene

CHP in Practice:

CHP systems can be configured to match base load demand, supporting both electrical and thermal requirements.

• Recovered heat can be used within production processes, reducing demand on existing site boiler systems without impacting production
• Seamless on-site electricity generation supports continuous operation
• System design can be aligned with site-specific load profiles 

Outcome:

When correctly specified, CHP supports stable operation, reduces energy losses and enables more efficient use of fuel across the production process.

Agriculture: Flexible Solutions for Variable Demand

Agricultural applications present a wide range of operating conditions, from continuous processes such as anaerobic digestion to more variable demands in farming and horticulture.

Operational Requirements:

• Variable or seasonal demand profiles
• Requirement for space heating, hot water or drying
• Increasing focus on efficient use of available resources

CHP in Practice:

CHP systems can be adapted to suit a range of agricultural uses, particularly where a consistent heat demand is present.

• Heat output can be used for greenhouse heating, livestock housing or crop drying
• On-site electricity generation reduces reliance on external supply
• Integration with biogas systems enables on-site energy generation from waste streams

 Outcome:

CHP provides a practical solution for improving energy efficiency while supporting more effective use of available fuels and resources.

Application-Specific Design

The performance of a CHP system is determined by how well it is matched to the site.

Key considerations include:

• Load profile and operating hours
• Fuel type and availability
• Heat utilisation
• Grid synchronisation requirements (G99 compliance)
• Integration with existing infrastructure

A correctly designed system ensures that both heat and power outputs are utilised effectively, maximising efficiency.

A Practical Approach to Energy Efficiency with CHP

CHP is a well-established solution for sites with combined heat and power demand. Its value lies in its ability to be adapted to different operational environments.

While food processing and agriculture provide clear examples, the same principles apply across a wide range of industries. Where heat can be used effectively alongside on-site power generation, CHP offers a reliable and efficient approach to energy supply.

To find out how CHP can support and optimise your site’s operations, contact our team on 01928 718533 or sales@2-g.com.