Your business uses electricity in more places than it used to.
If you operate a farm, you may have solar panels on the roof, a small wind turbine in the field, and battery storage in the yard. Alongside this, daily operations such as cooling, ventilation, machinery, lighting, and more require reliable energy. For SMEs, the reality is similar. More processes are becoming electric, and more of them need energy at different times of the day.
The question is no longer only how much electricity you need. It’s also when you need it, where it comes from, and what should happen when you produce more than you use.
An energy management system, or EMS, helps control that.
An EMS measures your energy production and consumption, then routes electricity between your solar panels, wind turbine, battery, business processes, and the grid. For a farm, that could mean balancing a wind turbine, solar panels, battery storage, milking robots, and ventilation. For an SME, it might mean coordinating solar panels, charging stations, machinery, refrigeration, heating, and lighting.
The goal is practical: use more of your own electricity, reduce unnecessary peaks, and keep a clearer grip on your energy costs.
In this blog, we’ll be walking you through how an energy management system can work for your farm or business. Let’s go!
An energy management system is a combination of hardware and software that measures, analyses, and controls energy flows across your site.
The hardware collects data from your energy assets, including smart meters, inverters, wind turbines, solar panels, batteries, etc. The software turns that data into decisions. It shows what is happening now, learns from usage patterns, and steers the system based on the rules you set.
Put simply, an EMS juggles three questions all day long:
That last question is the most important.
A monitoring system can show you that your solar panels produced more than your business needed at 13:00. An EMS can decide what to do with that surplus at 13:00. It might charge the battery, reduce feed-in, or even follow a rule you have set, such as keeping battery charge above 20% or limiting export to the grid.
The Ecoways Way |
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Ecoways works with Tweaq, a Dutch EMS provider based in Veldhoven. |
From 1 January 2026, certain larger utility buildings in the Netherlands must have a building automation and control system, known in Dutch as a GACS, if their heating or air-conditioning system is above 290 kW. From 2030, this threshold drops to 70 kW.
This does not mean every farm or SME automatically needs the same type of system. The exact requirement depends on the building, the technical installation, and the way energy is used. It also does not mean every EMS automatically meets the legal requirements for a GACS.
What it does show is that the Dutch government expects businesses to understand their energy use, reduce waste, and manage energy more actively.
For most farms and SMEs, the main reason to look at an EMS is practical: getting more from your own wind, solar, and storage system. But for businesses with higher energy consumption, regulation adds some regulatory urgency.
The terms are often used together, but they do not mean the same thing.
|
System |
What it does |
Best described as |
|
Energy monitoring system |
Measures and reports energy use and generation |
Shows what happened |
|
Energy management system |
Measures, analyses, and controls energy flows |
Steers what happens next |
A monitoring system tells you when energy is produced, when it is used, and where peaks appear. This can be super valuable, especially for businesses that want to understand their energy profile.
An EMS goes further, taking that information and acting on it.
For example, a monitoring system might show that your business often has a high demand peak around 17:00. An EMS can prepare for that peak by charging the battery earlier, then discharging it when demand rises.
If your site has several energy flows to coordinate, an EMS is especially relevant. Solar panels alone can often be monitored, but a combined system with solar, wind, battery storage, charging points and operational demand needs active control.
An EMS works by measuring, analysing, and adjusting.
The EMS starts by collecting data from the systems connected to it.
That can include:
This gives the EMS a live picture of your site. It can see how much energy is being generated, how much is being used, how much is stored in the battery, and how much is moving to or from the grid.
For a dairy farm, the system might see higher demand around milking times, cooling, cleaning, or feed systems. Whereas for an SME, the peak might come from machinery, charging vehicles, or office use at certain times of day.
An EMS learns from the pattern on your site and acts accordingly.
Once the EMS understands what is happening, it can steer energy flows automatically.
When your wind turbine and solar panels produce more electricity than your business needs, the EMS can send that surplus to the battery. When the battery is full, it can decide whether to export energy to the grid or limit production.
When your business uses more electricity than your wind and solar system is producing, the EMS can discharge the battery before drawing extra electricity from the grid.
This helps generation and consumption line up, which is something that rarely happens naturally.
Solar panels peak during the day and most strongly in summer. A small wind turbine often produces more during evenings, nights, and in winter. Your business has its own rhythm. A farm might use a lot of energy early in the morning, late afternoon, or overnight. An SME might see clear peaks during production hours or delivery windows.
The EMS sits between all of that, ensuring each part of the system works together.
An EMS gives business owners a way to set the rules.
Through a dashboard, you can usually decide how you want the system to behave. For example:
For many users, the dashboard is the part that makes the EMS feel practical. They can see where electricity is coming from, where it is going, and how full the battery is.
An EMS can help in several ways. The exact result depends on your energy use, generation setup, battery size, and grid connection. But for farms and SMEs with several energy flows, the main benefits are usually clear.
When you generate your own electricity, timing matters. An EMS helps match production with demand by deciding when energy should be used, stored, or sent elsewhere. For example, it can:
For farmers, this could mean using more of your own energy for cooling, ventilation, milking, irrigation, or feeding systems. For SMEs, it could mean powering machinery, refrigeration, lighting, charging stations, or office use with more electricity from your own site.
Peak load happens when several systems need electricity at the same time. An EMS can help reduce those peaks by using stored energy or shifting flexible loads where possible. It can help by:
Not every process is flexible - a milking robot, cooling system, or production line needs to run when the business needs it. But even partial control can help when several energy flows are happening at once.
Many businesses do not know the daily rhythm behind their monthly energy bill. An EMS offers a clear, top-down view showing:
For farmers, this can help connect energy use to daily routines. You can see what happens during milking, cooling, ventilation, irrigation, or charging. For SMEs, it can show what production runs, refrigeration, vehicle charging, or heating patterns do to your electricity profile. These insights can help inform better decisions in the future.
Energy rules and pricing are changing. An EMS can help your business respond by:
For businesses with a large surplus, energy trading may become part of the business case. For others, the main benefit is more control over when energy is used, stored, or exported.
An EMS makes most sense when there are multiple energy flows to coordinate.
That usually means businesses with a combination of:
For farms, this can include dairy farms, poultry farms, pig farms, arable farms, fruit growers, horticulture businesses, and larger mixed farms. Each has its own demand profile.
For SMEs, an EMS can be relevant for companies with steady high consumption, cooling, machinery, charging needs, workshops, logistics yards, warehouses, offices, or multiple buildings.
The main question is how your generation, storage, and demand work together, not how much electricity you use. If your business only has a small amount of solar and no battery, a monitoring system may be enough for now. If you have wind, solar, and storage, or if you plan to add storage soon, an EMS becomes a more attractive option.
The cost of an EMS depends on the situation.
A smaller monitoring setup will usually cost less than a full EMS that controls wind, solar, storage, charging points, etc. The final price depends on the complexity of the system: how many assets need to be connected, whether battery storage is included, and other case-by-case factors.
As a working estimate, Ecoways’ Commercial Manager for Energy Storage, Peter Withuis, indicates that an EMS subscription controlling battery, wind, and solar can be around €700 per year*. But a better way to think about costs is that an EMS should fit the energy system it controls.
You do not want to overdo the software layer for a modest setup. You also do not want a basic monitoring tool trying to manage a complex site with solar, wind, storage, charging, and high peak demand.
That’s why Ecoways looks at the full system: generation, storage, consumption, grid connection, and future plans.
*Please note this is an estimate, not a fixed price. Energy trading may require an additional subscription or market connection, and unique set-ups may require bespoke solutions.
Wind, solar, and storage each play a different role. Solar covers daylight hours, wind often fills more of the evenings, nights, and colder months, and battery storage keeps surplus electricity available for later use.
The EMS coordinates the three.
Here is how that can look in practice:
For farmers, an EMS is about control over daily operations. Energy use is often tied to systems that cannot simply pause when the grid is busy: ventilation, cooling, milking, pumping, cleaning, feeding, and storage all need reliable electricity at the right moment.
For SMEs, an EMS helps coordinate energy use across buildings, equipment, vehicles, and daily operations. The energy pattern may look different from a farm, but the challenge is often the same: more electric processes, higher peaks, and more pressure on the grid connection.
In many cases, yes.
A battery stores electricity, but it needs control. Without the right control, it may charge when you would rather export, or discharge when you would rather save energy.
The EMS gives the battery a job.
The best battery setup is the one that fits the business behind it. A farm with ventilation and cooling has different priorities from a warehouse with EV charging. An EMS helps make those priorities part of the system.
An energy management system is a combination of hardware and software that measures, analyses and controls energy flows. It connects systems such as solar panels, wind turbines, batteries, smart meters, charging stations and business loads, then decides where electricity should go based on your settings.
A monitoring system shows what happened. It reports energy use, generation and peaks. An EMS goes further by controlling what happens next. It can charge or discharge a battery, limit peaks, prioritise self-consumption and follow rules set by the user.
Yes, especially for farms with their own generation, battery storage or high electricity demand. Dairy farms, poultry farms, arable farms, fruit growers and horticulture businesses can all have energy patterns where wind, solar and storage need to work together.
Yes. SMEs with solar panels, battery storage, EV charging, machinery, refrigeration, workshops, warehouses or multiple buildings can benefit from active energy control. An EMS is especially relevant when peak demand or grid capacity is a concern.
Yes. An EMS can read solar inverter data, use solar electricity directly, send surplus electricity to a battery or apply rules for export. Solar is often strongest during the day and in summer, so the EMS helps match that generation with business demand.
Yes. A small wind turbine can be connected to an EMS as part of a wider energy system. Wind often produces at different times from solar, including evenings, nights and winter. The EMS helps coordinate that output with storage and consumption.
Yes. Battery control is one of the main reasons to use an EMS. The system can charge the battery when there is surplus generation, discharge it during demand peaks and keep a minimum reserve if that is part of your settings.
Yes. The EMS follows the settings you choose. You can usually set preferences through a dashboard, such as a battery reserve, export limit, self-consumption priority or peak load limit.
Costs depend on the number of connected assets, the level of control, the hardware required and the subscription model. As a working estimate, an EMS subscription controlling battery, wind and solar can be around €700 per year. This is an estimate and may change depending on the setup. Energy trading can require an additional subscription or service.
Some larger utility buildings in the Netherlands must have a building automation and control system from 2026 if their heating or air-conditioning system is above 290 kW. From 2030, the threshold drops to 70 kW. This is not the same as saying every farm or SME must install an EMS. The requirement depends on the building and installation. For many businesses, the practical reason to install an EMS is better control over energy use, generation and storage.
An EMS turns separate energy assets into one working system, measuring what is happening across your site, analysing your energy pattern, and controlling where electricity goes.
For both farms and SMEs, that can mean more control over the energy needed for daily operations.
The energy system around your business is changing. More generation happens locally, grid capacity is tight in many regions, and feed-in rules and electricity prices are shifting. The right EMS helps you make better energy decisions every day.
Ecoways offers EMS solutions that help you understand, manage, and optimize your energy use. Get in touch with our team to learn what an EMS could mean for your farm or business.