Integrated electrical engineering for reliable energy generation
Biogas and cogeneration plant solutions must coordinate energy generation, industrial automation, electrical protection and the management of different operating conditions. In this context, the electrical panel is not an isolated component. It is the point where control, power distribution and the operational continuity of the entire plant come together.
Addressing this level of complexity requires more than adapting a standard configuration. The design process must start from the specific characteristics of the application, the technologies involved and the way each section of the plant is expected to operate.
This is the foundation of Sices’ engineering approach, developed through extensive experience in designing and manufacturing custom control panels for biogas and cogeneration plants.
Why biogas and cogeneration plants require dedicated solutions
A biogas plant normally includes several interconnected operating sections: the anaerobic digestion process, gas treatment, the cogeneration unit, auxiliary systems and the distribution of the electricity and heat produced.
The electrical system must enable these components to work together, correctly managing start-up and shutdown sequences, operating modes, alarms, protection devices and emergency conditions.
Installed power, the number and type of generators, grid configuration, plant operating strategy and automation requirements directly influence the electrical architecture. Each application therefore presents different technical and functional requirements.
Biogas is produced through the anaerobic digestion of organic materials and can be used to generate electricity and heat or upgraded into biomethane. The International Energy Agency identifies several production pathways and applications, confirming the importance of adapting plant control systems to the specific energy process.
The European Commission also recognises biogas and biomethane as relevant resources for renewable energy production, decarbonisation and the diversification of Europe’s energy supply.
Biogas and cogeneration plant solutions begin with requirement analysis
The development of an effective electrical solution begins with the collection and analysis of technical information. This phase establishes how the different devices and systems must interact and which functions need to be integrated into the control architecture.
The analysis normally considers:
- the overall architecture of the plant;
- the characteristics of generators and electrical loads;
- power generation and distribution requirements;
- grid connection and parallel operation conditions;
- expected operating sequences;
- control, protection and automation devices;
- interfaces with machinery, PLCs and supervisory systems;
- environmental conditions at the installation site;
- maintenance, diagnostics and future expansion requirements.
A detailed requirement analysis makes it possible to identify potential critical issues before manufacturing begins. It also transforms the customer’s specifications into a consistent electrical and control architecture.
This method follows the structured principles described in the Sices electrical panel design process, where analysis, engineering, manufacturing, testing and commissioning are treated as connected phases of the same project.
Integrating control, protection and power distribution
In a combined heat and power plant, the electrical panel may be required to manage the generator, thermal recovery systems, auxiliary equipment, grid connection, protection functions and power distribution at the same time.
These functions cannot be designed independently. They must be integrated into an architecture that ensures consistent and predictable system behaviour under every expected operating condition.
Depending on the project, the control logic may include:
- automatic generator start-up and shutdown;
- management of operating sequences;
- generator synchronisation;
- parallel operation between generators or with the grid;
- load sharing and power management;
- control of auxiliary systems;
- alarm and event management;
- coordinated operation of protection devices;
- communication with external supervisory platforms.
Proper integration reduces interference between different sections of the plant and makes system behaviour easier to understand during both normal operation and abnormal conditions.
Custom control and power panels for biogas plants
Sices develops custom electrical panels based on the technical and operational requirements of each application.
Customization does not simply concern enclosure dimensions or component placement. It involves the entire system configuration, including:
- electrical diagrams;
- panel architecture and internal layout;
- control and automation logic;
- electrical protection strategies;
- operator interfaces;
- industrial communication protocols;
- diagnostic and maintenance procedures;
- provisions for future plant expansion.
This approach allows the panel to be correctly integrated into complex plants, partially defined architectures or systems involving equipment and technologies supplied by different manufacturers.
Sices can develop the project from the customer’s initial requirements or engineer the final solution from existing diagrams, technical specifications and functional documentation.
The principles behind this activity are explored further in the Sices article From concept to delivery: designing custom electrical panels.
Operational continuity is designed before manufacturing
Reliability and operational continuity are essential requirements for plants that generate electricity and heat. Many of the factors that will determine future plant performance are defined during the engineering phase.
Component selection, functional separation, accessibility, wiring organization and the quality of technical documentation directly affect everyday operation and maintenance activities.
An effective design therefore considers the complete lifecycle of the system rather than only its initial start-up. The panel should make it easier to:
- identify components and electrical circuits;
- detect and diagnose faults;
- perform routine maintenance;
- replace devices safely;
- update control software and operating logic;
- expand the system when plant requirements change.
A clear and accessible internal structure helps technical teams perform inspections, modifications and corrective actions more efficiently, reducing the risk of extended downtime.
Automation and supervision for biogas and CHP plants
Clear and timely information is essential for understanding the behaviour of an energy generation plant.
Automation and supervision systems can collect operating data, display equipment status, manage alarms and monitor the main electrical and process parameters.
Integration with PLCs, HMIs, SCADA systems and remote monitoring platforms gives operators a more complete view of the plant and supports faster identification of abnormal operating conditions.
Technology must nevertheless be selected according to the actual application. The value of the system does not depend on the volume of data collected, but on its ability to transform that data into useful information for operators and maintenance teams.
Remote supervision and structured diagnostics can also support preventive and condition-based maintenance strategies, improving responsiveness and reducing unnecessary on-site intervention.
Designing protection systems around real operating conditions
Electrical protection is a central part of biogas and cogeneration plant solutions. Protection devices must safeguard generators, electrical loads, distribution systems and operators while remaining coordinated with the plant’s control logic.
The design must consider expected current levels, short-circuit conditions, grid configuration, generator characteristics and the way the plant behaves during faults or power interruptions.
Protection settings and operating sequences must be developed as part of a single system. This reduces the risk of uncoordinated interventions and helps isolate faults without unnecessarily stopping unaffected sections of the plant.
Testing and commissioning of biogas control panels
The quality of a biogas or cogeneration control panel depends not only on correct engineering and accurate manufacturing, but also on structured testing and commissioning activities.
Before delivery, testing may include:
- verification of wiring and circuit continuity;
- functional testing of control devices;
- validation of automation sequences;
- verification of protection devices and settings;
- communication tests between PLCs, HMIs and external systems;
- simulation of alarms and abnormal conditions;
- electrical safety and insulation checks.
Commissioning is the phase in which the electrical panel is integrated with the actual plant and tested under real operating conditions. Communication, sequences, interfaces and protection functions are verified together with the other installed equipment.
Maintaining continuity between design, manufacturing, testing and commissioning helps ensure that the final system performs according to the requirements established at the beginning of the project.
Further information is available in the Sices analysis of testing and commissioning of electrical panels.
Compliance, documentation and international standards
Control and power panels must be developed according to the technical standards and regulatory requirements applicable to the project and destination market.
The design process should consider electrical safety, protection, component selection, enclosure characteristics, wiring, verification procedures and final technical documentation.
International standards published by the International Electrotechnical Commission provide reference principles for electrical systems, switchgear and controlgear assemblies.
Complete project documentation may include electrical diagrams, component lists, test reports, operating instructions, certifications and information required for future maintenance.
Accurate documentation is not simply a delivery requirement. It supports long-term reliability, traceability and efficient plant management.
A real application: the MTM biogas project
Sices’ engineering approach has been applied to a range of energy generation projects, including the MTM biogas project in Locate di Triulzi, near Milan.
For this application, Sices supplied a custom control panel designed to manage the operating functions of both the cogeneration unit and the biological plant.
A single integrated electrical panel coordinates the generator control functions and the biological process used for biogas and energy production.
The project demonstrates how electrical engineering, automation and application knowledge can be combined within a tailored solution for a small-scale biogas plant.
The value of a specialised technical partner
Designing biogas and cogeneration plant solutions means understanding how energy generation, power distribution, industrial automation and process control must interact within the same system.
Sices supports customers, engineering companies, equipment manufacturers and system integrators in the development of custom control and power panels for energy generation applications.
From initial analysis and engineering to manufacturing, software development, testing and commissioning, each phase is approached with technical expertise, method and attention to the plant’s actual operating conditions.
The reliability of an energy generation system does not depend on a single device. It depends on how effectively all its components have been designed to work together.
