How to Automate an Agri-Food Plant

The Spanish agri-food industry faces unprecedented pressure today: high energy costs, a shortage of skilled labour and shrinking margins while European competitors automate at an accelerating pace. In 2026, continuing to operate with the same manual processes as ten years ago is no longer a strategic option: it is a real competitive risk.

This guide is written for operations directors, plant managers and production managers who need to make an informed decision about automating their facilities: which processes to tackle first, what return to expect and what criteria to use to choose the engineering company that will carry out the project.

Why Is Automation No Longer Optional in the Agri-Food Industry?

In 2025, the global food processing automation market reached $27.95 billion, with a projected growth rate of 7.4% a year until 2030. This figure is not a sign of technological fashion: it reflects the profitability pressure on every company in the sector that has yet to take the step.

Plants that do not automate face three problems at once:

Uncontrolled energy costs

Electricity is one of the most significant operating costs in any processing plant. Without energy management systems, consumption soars at peak hours and nobody notices until the bill arrives.

Incomplete traceability

Regulatory and quality requirements call for reliable, traceable and available records. Manual processes make it hard to maintain complete and consistent traceability in real time.

Dependence on scarce staff

Automation does not eliminate jobs in the sector; it transforms them. Repetitive tasks move to automatic systems, while skilled staff focus on control, analysis, maintenance and continuous improvement.

Which Processes in an Agri-Food Plant Can Be Automated?

Many operations directors think of automation as installing robots. In reality, the biggest return in agri-food plants usually comes from process automation, not necessarily from robotics. They are different fields, with different investments, timescales and objectives.

Production control and management

The core of industrial automation is the SCADA system, or process control software. It allows:

• Real-time monitoring of every stage of the process from a control room or from connected devices.
• Digital recipes that eliminate operator errors in formulations, especially relevant in feed mills.
• Automatic alerts for deviations in parameters such as temperature, humidity, pressure, flow rate or process times.
• Automatic production reports, performance per shift and operational KPIs.

Electrical installations and energy management

An automated plant without an optimised electrical installation is like a high-end car with an old engine. Industrial electrical engineering projects include:

• Medium- and low-voltage distribution panels adapted to the plant's real load.
• Electricity consumption monitoring systems by section, line or machine.
• Integration with solar self-consumption installations to maximise self-generation during peak-demand hours.

Traceability and quality control

Regulations and quality standards in the food industry require full traceability from field to shelf. Modern industrial control systems can automatically record the origin batch of each raw material, the process parameters at each stage and the finished product data needed for internal or external audits.

How Much Does It Cost to Automate an Industrial Plant? What to Expect from the ROI

This is the question that paralyses many projects. The honest answer is that it depends on the scope, but the return usually justifies the investment when the project is properly sized and the processes with the greatest operational impact are prioritised.

Factors that determine the budget

A complete project for a medium-sized feed mill, with a control system, a new electrical installation and proprietary software, can range from €300,000 to €900,000, with an approximate execution time of 12 to 18 months.

Typical return on investment

• Reduction in operating costs: between 15% and 20%.
• Increase in production capacity: between 10% and 25% without expanding floor area or staff.
• Fewer quality incidents: less variability, fewer rejections and fewer returns.
• Typical overall ROI: between 3 and 7 years, depending on the starting point.

Automation + Solar Energy: The Combination That Maximises Savings

An automated plant manages its production with precision. An automated plant with solar self-consumption also controls one of its biggest variable costs: electricity.

Industrial plants are leading the transition to PV self-consumption not for ideological reasons, but because of clear economic logic: they consume energy for many hours of the day, usually have large roofs and can coordinate production, consumption and renewable generation.

Why does it work especially well in agri-food plants?

• Consumption is daytime and predictable: many plants operate mainly during the day, coinciding with the hours of highest solar generation.
• Industrial roofs are large: a large building allows a significant PV capacity to be installed for self-consumption.
• The savings are immediate and cumulative: the reduction in the electricity bill improves the overall return of the project.
• Energy integration improves control: production, consumption and generation can be viewed from the same data logic.

What Criteria Should You Use to Choose an Engineering Company?

Many projects fail not because of the technology, but because of choosing a supplier that does not know the sector, subcontracts critical parts or disappears after installation. Choosing the right engineering company is both a technical and a strategic decision.

1. Genuine sector specialisation

Automating a bottling line is not the same as automating a feed mill or a winery. A generalist company will learn on your project; a specialist already knows the risk map.

2. In-house software versus third-party solutions

Companies that have developed their own industrial control software can adapt the platform to the client's processes without depending entirely on external licences. Support is also usually faster because the team knows the architecture and the code.

3. End-to-end delivery capability

An automation project involves electrical engineering, control programming, physical installation, commissioning and staff training. If the company subcontracts critical phases, the coordination risk increases and technical responsibility becomes diluted.

4. After-sales support with a defined SLA

A stopped plant costs money every hour. Before signing, it is advisable to define the response time for a critical incident, support availability and technical assistance channels.

5. Certifications and track record

Quality and environmental certifications are a sign of organisational maturity, but accumulated experience matters too. A recent supplier is not the same as a team with decades of industrial projects delivered.

Why Some Companies Choose ER Ingeniería for Their Projects

At ER Ingeniería we have spent more than 40 years designing, installing and commissioning industrial automation and renewable energy projects from Villarrobledo, Albacete, with an active presence in more than 20 countries across four continents.

Our specialisation in the agri-food industry is reflected in projects carried out in feed mills, wineries, the food industry and industrial plants with automatable processes. The clients mentioned in our track record include companies such as Inalsa, Novafeed, Agropal, Jisap, Gypasa, Bodegas Ayuso, Bodegas Lozano, Aresan and Coop Manjavacas.

SuitER: in-house industrial software

ER Ingeniería's technical differentiator is SuitER, our proprietary industrial process automation and control platform. Unlike generic solutions, SuitER integrates with the client's specific processes: dosing control, batch traceability, energy management, production monitoring and indicator visualisation.

End-to-end service

Frequently Asked Questions

Conclusion: Automation Is a Strategic Decision, Not Just a Technological One

The real question is not whether an agri-food plant should automate, but when and with whom. The market does not wait: companies that have already taken the step operate with lower costs, greater capacity, more traceability and better control of their processes.

The first step is always an honest diagnosis of the current state: which processes generate the most losses, where energy consumption is highest, which traceability requirements are not being met efficiently and which systems need modernising.

From there, a properly sized project delivered by a team with genuine sector experience can generate measurable returns and sustainable competitive advantages.

Sources

• Fortune Business Insights. Industrial Automation Market. 2025.
• Mordor Intelligence. Food Processing Automation Market. 2025.
• Dinproing. Automatización Industrial y Reducción de Costos en 2026.
• Eleia Energía. Autoconsumo solar para empresas en 2026.
• AMB Green Power. Análisis del retorno de la inversión en proyectos solares industriales. 2025.
• UNEF. Autoconsumo fotovoltaico en España alcanza los 9,3 GW instalados. 2025.
• OLEOREVISTA. La digitalización acelera su implantación en la industria agroalimentaria española. 2025.