March 31, 2026
Sunways at Hungary Renewable Energy Exhibition：Powering Local Clean Energy Growth
On March 29, the five-day CONSTRUMA RENEO 2026 exhibition in Budapest concluded successfully. As one of Hungary’s key renewable energy and building technology events, the exhibition brought together solar energy companies, energy storage solution providers, installers, distributors, system integrators and end users from across the local market.
For Sunways, the Hungary Renewable Energy Exhibition was more than a product showcase. It was an opportunity to engage directly with the Hungarian solar and energy storage market, understand local customer needs and present residential energy storage solutions that are aligned with the country’s latest policy and compliance requirements.
During the exhibition, the Sunways team introduced its full range of residential energy storage products and held in-depth discussions with hundreds of local installers, distributors and end users. These face-to-face conversations helped Sunways gain valuable insights into market expectations, project requirements and the growing demand for compliant solar-plus-storage solutions in Hungary.
Hungary’s Residential Energy Storage Market Enters a New Stage
Hungary’s residential energy storage market is entering a period of accelerated development. Driven by policy support and rising interest in home energy independence, more households are looking for solutions that can increase solar self-consumption, reduce grid dependence and improve long-term energy security.
A key factor behind this growth is Hungary’s OETP residential energy storage subsidy program, also known as the Otthoni Energiatároló Program. With a total budget of 100 billion forints, the program is reshaping the rules of the local residential energy storage market.
The direction of the subsidy is clear: encourage self-consumption and strictly control net metering. This means that energy storage systems must not only deliver high performance, but also meet precise technical, grid connection and data reporting requirements.
In today’s Hungarian market, compliance is no longer an optional advantage. It has become a basic requirement for market entry.
Understanding Hungary’s “Precision Compliance” Requirements
The Hungarian residential energy storage subsidy program sets clear technical requirements for eligible systems. To meet local market expectations and secure subsidy eligibility, energy storage solutions must comply with several key conditions.
Core Requirements for Eligible Systems
🔸Energy storage capacity: Rated system capacity must be no less than 10 kWh
🔸Battery voltage: High-voltage systems of 100V or above are preferred; low-voltage systems are limited to batteries originally manufactured by the inverter manufacturer
🔸System architecture: Only DC-coupled systems are supported
🔸Operating mode: The system must support anti-backfeed control to achieve zero reverse power flow
🔸Grid connection: The system must be grid-connected; standalone systems are not supported
🔸Inverter power limit: Maximum inverter power must not exceed 5 kW
In addition to these requirements, products must comply with the MSZ-EN series of grid connection standards, be included on the local DSO whitelist and support data reporting to the FEAK platform.
For installers and distributors, these requirements create a new challenge. Product selection is no longer only about performance or price. It is also about whether the complete system can meet policy, certification and grid connection requirements. This is where Sunways’ product readiness and market understanding provide clear value.
Sunways Residential Storage Solutions for Hungary
At CONSTRUMA RENEO 2026, Sunways presented residential energy storage solutions designed to support the Hungarian market’s technical and subsidy requirements. The showcased products are already in mass production and available for delivery, helping partners respond quickly to local market demand.
Solution 1: High-Voltage Residential Storage System
The first solution is based on the Sunways STH-5KTL-HS high-voltage hybrid inverter.
This inverter can be matched with:
🔸Sunways STE-ES 10–30 kWh high-voltage batteries
🔸Compatible high-voltage batteries from selected third-party brands
This solution is designed for users and installers looking for a high-voltage storage system that meets the preferred voltage direction of the Hungarian subsidy program. With DC-coupled architecture, grid connection capability and anti-backfeed control, the system supports efficient solar energy storage and higher household self-consumption.
Solution 2: Low-Voltage Residential Storage System
The second solution is based on the Sunways STH-5KTL-LS low-voltage hybrid inverter.
This inverter can be matched with:
🔸Sunways STE-OS 10–20 kWh low-voltage batteries
Because Hungary’s subsidy requirements limit low-voltage systems to batteries produced by the same inverter manufacturer, the Sunways low-voltage solution provides a clear advantage. By combining the STH-5KTL-LS inverter with Sunways STE-OS batteries, installers can offer a complete same-brand system that supports local compliance requirements while maintaining system reliability and ease of integration.
Designed to Meet Local Subsidy and Grid Requirements
Sunways residential energy storage solutions are prepared to meet the key requirements of the Hungarian market. Both high-voltage and low-voltage system configurations are designed around practical installation needs, subsidy compliance and long-term operation.
Compliance Highlights
- Inverter power ≤ 5 kW
- System capacity ≥ 10 kWh
- High-voltage battery options ≥ 100V
- Same-brand low-voltage battery compatibility
- DC-coupled system architecture
- Standard anti-backfeed function
- Grid-connected operation with anti-islanding protection
- Standard WiFi/4G communication
- Support for FEAK data reporting requirements
- Listed on the local DSO whitelist
- Compliance with MSZ-EN grid connection standards
These capabilities help reduce complexity for installers and distributors. Instead of combining different products and verifying each requirement separately, partners can work with Sunways to build complete, compliant residential storage solutions that are ready for the Hungarian market.
From Product Display to Local Market Dialogue
During the five-day exhibition, Sunways received strong interest from Hungarian installers, distributors and end users. Many visitors focused on the practical details of system configuration, battery compatibility, anti-backfeed control, subsidy eligibility and communication requirements.
This reflected a clear market shift. Local customers are no longer only asking whether a system can store energy. They are asking whether it can meet subsidy rules, connect safely to the grid, report data properly and support long-term residential operation.
Sunways’ team responded with product explanations, system configuration guidance and market-specific technical discussions. Through these conversations, Sunways further strengthened its understanding of Hungary’s residential energy storage landscape and the needs of local partners.
The exhibition also confirmed that the Hungarian market is entering a more mature stage. As subsidy policies become more precise, partners need reliable technology providers that can support both product performance and compliance readiness.
Supporting Partners with Flexible Cooperation Models
In addition to product and certification readiness, Sunways also supports partners through flexible cooperation models. For different types of local and regional partners, Sunways can provide cooperation options including brand authorization, OEM and ODM support.
This flexibility is important for a fast-growing market such as Hungary. Installers, distributors, trading companies and PV solution providers may have different business models, customer groups and brand strategies. By offering adaptable cooperation methods, Sunways helps partners build competitive solar and energy storage offerings while reducing product development and compliance complexity.
Sunways aims not only to supply products, but also to support partners in building stronger local market capabilities.
Powering Local Clean Energy Growth
Although CONSTRUMA RENEO 2026 has concluded, the opportunity in Hungary’s residential energy storage market is just beginning.
With the support of the OETP subsidy program, Hungary is accelerating the adoption of home energy storage systems. This creates new opportunities for installers, distributors, system integrators and international energy solution providers. At the same time, it raises the standard for product compliance, system design and long-term reliability.
Sunways is ready for this new stage.
With mass-produced residential storage products, DSO whitelist readiness, FEAK reporting capability and compliance with MSZ-EN grid connection standards, Sunways provides solutions that are aligned with Hungary’s “precision compliance” market environment.
Looking ahead, Sunways will continue to work with local and European partners to support clean energy adoption, improve residential energy independence and help more households benefit from reliable solar-plus-storage systems.
At Sunways, we believe that clean energy growth depends on more than technology alone. It requires deep market understanding, responsible compliance, reliable products and trusted partnerships.
By listening to local needs and acting with precision, Sunways is committed to powering a cleaner, smarter and more sustainable energy future for Hungary and beyond.
