Higher efficiency thanks to condensing boiler technology
GreenBOX®
Smart heating integration
of all major electrical appliances
Maximizing Self-Consumption
The ÖkoFEN GreenBOX® is the intelligent heart of the battery storage system: Its smart control system connects all major consumers—from the heating system and PV array to the electric car—and ensures that all components work together optimally. The result: maximum efficiency throughout the entire home system—today and in the future. Thanks to its modular expandability, the system grows flexibly with your needs—whether through additional consumers or an expansion of PV capacity.
Benefits of the ÖkoFEN GreenBOX®
What makes the GreenBOX® so special?
Our management explains:
The GreenBOX® makes it possible – smart heating
“The GreenBOX® detects when the heat pump is needed in the morning. It takes advantage of low-cost electricity rates during the night to charge the battery strategically. This way, the heat pump runs on affordable, pre-stored electricity during the expensive morning hours—efficiently and cost-effectively.”
The GreenBOX® makes it possible – Utilizing surplus solar power
“Based on weather data and the sun's position, the GreenBOX® predicts a high solar power yield as early as mid-morning. As a result, battery charging is initially delayed, and the electric heating element is activated instead. This keeps the pellet heater turned off, yet the battery storage system is still fully charged by sunset.”
Sophisticated technology with no recurring costs
Ongoing software development keeps the system technically up to date—with no subscription fees or hidden charges. The user experience is as simple as it is impressive: the interface is intuitive, and the system architecture is well-designed—developed and programmed in Austria. And we set the standard when it comes to safety as well: The warranty on battery storage systems and inverters is 10 years (at least 80% of the rated capacity).
A sophisticated energy management system that uniquely combines efficiency, user-friendliness, and investment security.
The ÖkoFEN GreenBOX® – Maximum Networking Intelligence for Your Energy System
The ÖkoFEN GreenBOX® is the intelligent heart of the battery storage system. It ensures that all components—from the heating system to the PV system and the electric vehicle charging station—are automatically, efficiently, and heat-optimized interconnected.
Available Scenarios
Select one of the four scenarios—“PV-Optimized,” “Scheduled,” “Electricity Price-Optimized,” or “Intelligent”—to configure or optimize the settings that best suit your needs.*
PV-optimized
- Active charging and heat-intelligent discharging based on PV output and current real-time electricity consumption.
- Option: Charge a car using surplus energy
Scheduled Charging
- Active charging and heat-intelligent discharging based on PV output, AND manual charging to a preset value at a desired time
- Adjustable maximum charging power (up to the inverter power)
- The battery is not charged outside the scheduled time window
Electricity-cost-optimized
- Active charging and heat-intelligent discharging based on PV output AND automated charging to a preset level based on the current electricity rate
- Adjustable maximum charging power (up to the inverter's power rating)
Automated, intelligent charging
- Active charging and heat-optimized discharging based on expected PV yield, including intelligent, maximum possible grid injection
- Most cost-effective charging
- Integration of PV capacity, exchange-traded electricity prices, weather data, sun position, etc.
- AI software: self-learning and self-optimizing
- Software automatically scans for the next electricity price peak and regulates the battery to a configurable SOC until then
- Flexible electricity tariff required
- Prepared for bidirectional discharging of an electric vehicle—depending on model and utility provider.
The ÖkoFEN All-in-One System
With battery storage, a heat pump, hydraulic components, a charging station, and an app, the ÖkoFEN All-in-One System helps you optimize energy management in your home and take energy efficiency to a whole new level. This smart all-in-one solution is the heating concept of the future.
GreenBOX® Best Practice
Hands-On Workshop in March
The ÖkoFEN GreenBOX® enables grid-friendly power injection, reduces grid consumption, and conserves battery life.
10 kWp PV system with 15 kWh battery storage
- No dynamic tariff
- Includes feed-in optimization, heat-intelligent GreenMode®, and EcoMode
Source: ÖkoFEN customer Franz H., Ried i.I. district, actual data as of March 19, 2025
Comparison of Standard Control
The battery storage system has the same charge level as in the example above. Since no weather data is factored in, the heat pump starts heating earlier and, due to the lack of an outdoor temperature forecast, operates at a very high intensity. As a result, the battery discharges more quickly, making it necessary to draw power from the grid. The battery then recharges during periods of PV output.
Unfortunately, the heat pump does not run during peak PV hours, but only starts up again when it gets cooler. As a result, a significant amount of primary energy from the grid is also required in the evening. The battery charge level is then significantly lower in the evening by comparison.
Conclusion: Virtually no grid feed-in and significantly higher grid draw.
Visualization and Statistics
GreenBOX® - Processing of all dynamic electricity rates
*Software and visualizations are subject to change. All illustrations are for illustrative purposes only and may vary depending on the software version.
