Earn with your battery system
The frequency market lets you earn additional revenue by helping keep the power grid in balance. Your battery system works automatically and earns even while you sleep. Simple, safe, and beneficial for everyone involved.
The frequency market benefits everyone
The power grid needs constant balancing, because generation and consumption must always match. Your battery helps keep that balance — and you get paid for it.
€500–€1,200 extra income per year
Your battery size determines how much you can earn. With a 10 kWh battery, it’s typically possible to earn around €700–€900 per year in truly passive income.
100% automated
After the initial setup, the system requires no attention. Everything runs in the background — the battery responds to grid needs and earns revenue for you.
Doesn’t limit your own use
Participating in the frequency market does not affect your day-to-day energy usage. The system ensures you always have enough energy for your own needs.
Supports battery longevity
Frequency market participation keeps the battery in an optimal operating range and can even extend its lifespan, because the battery is rarely left fully charged or fully empty for long periods.
A rapidly growing market
As renewable energy grows, the value of frequency services increases. Early participants are better positioned and can benefit more over the long term.
You support the green transition
By participating, you strengthen grid stability and help integrate renewables. You become an active part of the energy transition.
Frequency market mechanics, explained simply
The frequency market is a grid-balancing service. The grid operator buys and sells energy within seconds to keep the grid frequency stable at 50 Hz.
Registration
We register your battery system for frequency market participation. We configure the technical parameters and help set up contracts with the service provider.
Grid monitoring
Your battery continuously monitors grid frequency. If the frequency deviates from 50 Hz, the system reacts automatically with millisecond precision.
Balancing energy
When there’s a power deficit (frequency drops), the battery supplies energy to the grid. When there’s overproduction (frequency rises), the battery absorbs energy.
Monthly payout
The grid operator pays you a monthly fee for your battery being available and helping to keep the grid stable.
Different participation options
The frequency market includes multiple services with different response times and compensation. We help choose the best combination for your system.
FCR (Frequency Containment Reserve)
The fastest and usually best-paid service. The battery must respond within 30 seconds and balance for up to 15 minutes. Ideal for home systems.
- Response time: 30 seconds
- Highest compensation
- Activated rarely
- Suitable for smaller batteries
aFRR (automatic Frequency Restoration Reserve)
Automatic frequency restoration reserve. Activates after FCR and must respond within 5 minutes. Suitable for larger systems.
- Response time: 5 minutes
- Medium compensation
- Activated more often
- Suitable for larger batteries
mFRR (manual Frequency Restoration Reserve)
Manual reserve activated by the operator. Longer response time, but a more stable service profile. Suitable for various systems.
- Response time: 12.5 minutes
- Lower but steadier compensation
- More predictable
- Versatile
Is your system suitable for the frequency market?
Most modern battery systems can participate. Here’s what is typically required.
Minimum battery size
Battery capacity should be at least 5 kWh and power at least 5 kW. A larger battery usually means higher earning potential. An ideal range is often 10–20 kWh.
Compatible inverter
The inverter must support frequency market functionality and allow remote control. Most modern hybrid and battery inverters meet these requirements.
Internet connection
The system needs a stable internet connection to communicate with the service platform and receive commands. Wi-Fi or LAN should be consistently available.
Contracts & registration
We help you set up contracts with the service provider and register the system for participation. The process typically takes 2–4 weeks.
How much can you earn on the frequency market?
Income depends on battery size, market pricing, and participation intensity. Below are typical examples for different system sizes.
10 kWh battery system
A smaller but popular setup that fits well for an average household.
- Power: 5–7 kW
- Capacity: 10 kWh
15 kWh battery system
An optimal size for frequency participation with a strong balance between cost and earning potential.
- Power: 8–10 kW
- Capacity: 15 kWh
20+ kWh battery system
Larger systems allow you to maximize earning potential on the frequency market.
- Power: 10–15 kW
- Capacity: 20+ kWh
* Income examples are indicative and based on average market pricing in 2025. Actual earnings may vary depending on market conditions, participation rate, and the service provider. Some providers may offer a guaranteed minimum income, depending on the contract.
Frequently asked questions about the frequency market
No. The system is configured so your everyday needs always remain the priority. Frequency services use only available capacity that does not interfere with your household usage. You can use energy as usual.
After registration and activation, earnings start immediately. First payouts are typically made within one month after participation begins. The setup process usually takes 2–4 weeks.
No — often the opposite. Frequency operation keeps the battery in an optimal cycle and avoids long periods sitting fully charged or fully empty. This can even support longevity. Modern batteries are designed for these operating patterns.
No. The system operates fully automatically. After initial setup it requires no attention. You can view performance and earnings in an app if you want, but it’s optional.
Most modern systems can. The battery should be at least 5 kWh, the inverter must support remote control, and the system needs internet connectivity. We can assess your current setup for free.
In some cases, yes — many providers offer a guaranteed minimum income defined in the contract. Actual income can be higher depending on market conditions. Typical minimums are often discussed per kW per year, depending on provider terms.
Contracts are commonly 1–2 years and may renew automatically. Cancellation is usually possible with a notice period (often 1–3 months). Specific terms depend on the chosen service provider.
Start earning from your battery system
Request a free consultation and we’ll estimate how much you can earn on the frequency market. We help set everything up and get you started as quickly as possible.