Hungary’s OETP Program Explained: How Hypon Tailored Solutions in Perfect Alignment

On 15 January 2026, Hungary’s Ministry of Energy officially launched the OETP (Otthoni Energiatároló Program), marking a strategic shift in the country’s renewable energy policy. The focus has moved from “PV-only deployment” toward a more advanced model that prioritizes “energy storage and higher self-consumption”.

This transition reflects Hungary’s growing emphasis on energy independence and grid stability, while also injecting strong momentum into the residential energy storage market across Central and Eastern Europe.

Policy at a Glance: HUF 100 Billion to Unlock a New Storage Market

The Hungarian government has allocated HUF 100 billion (approximately EUR 250 million) to the program. Eligible households installing compliant battery energy storage systems (BESS) can receive subsidies of up to HUF 2.5 million (around EUR 6,200) per project.

By significantly lowering upfront investment costs, the program is expected to accelerate the adoption of residential storage systems nationwide.

Dual Coverage Strategy: Boosting New Installations and Upgrading Existing Systems

One of the program’s key strengths lies in its broad applicability, covering both new systems and existing PV installations.

New System Installations：(Encouraging integrated “PV + Storage” designs)

l  Maximum inverter rated power: 5 kW

l  PV module capacity capped at 120% of inverter power

Existing System Upgrades：(For households with existing grid-connected PV systems)

l  Expansion or replacement of existing PV components is not supported

l  Subsidies apply only to the storage system and related installation costs

Technical Requirements: High Standards for Grid Compatibility

OETP is not a simple consumer subsidy scheme. It sets clear technical thresholds to ensure that funded systems meet Hungary’s grid requirements and long-term energy strategy.

l  Capacity Requirement: The rated capacity of the energy storage battery must be at least 10kWh (a 10% technical tolerance is allowed), with no upper limit on capacity.

l  Voltage Requirement: BESS connected to inverters must have a rated voltage of at least 100V; for systems with a rated voltage below 100V, the battery must be an in-house product of the inverter manufacturer.

l  DC Coupling Only: The policy explicitly mandates DC-coupled energy storage solutions for all subsidized systems.

l  Zero Grid Feed-in Capability: Systems must be capable of operating with zero power feed-in to the grid.

Compliance Framework: Triple Certification System

Hungary has established a robust compliance mechanism to ensure quality and grid safety:

l  Technical standards compliance with MSZ-EN / EN / IEC requirements

l  DSO-approved inverter list (mandatory inclusion on the official inverter whitelist)

l  Data reporting and registration via the HMKE / FEAK system

Program Timeline

l  Applications open: 2 February 2026

l  Project completion window: within 24 months of subsidy approval

Hungary’s newly launched OETP is strategically geared towards a future residential energy model centered on high-efficiency self-consumption and zero grid feed-in—a vision that aligns seamlessly with Hypontech’s core philosophy of delivering user-centric energy solutions.

Hypontech HES & HHS & HHT Series: Optimized for Policy Compliance

Hypontech offers a dedicated product portfolio covering both low-voltage and high-voltage residential storage scenarios, designed to align precisely with OETP requirements.

l  Low-Voltage Applications

The HES 3–6K low-voltage hybrid inverter, paired with Hypontech’s in-house HBP low-voltage battery, fully complies with the policy requirement that sub-100 V battery systems must be supplied by the inverter manufacturer.

l  Compact, lightweight design for easier installation

l  High conversion efficiency of up to 98%, maximizing PV self-consumption

l  Optimized compatibility and long-term system stability

l  Direct alignment with the policy goals of self-use maximization and peak shifting

l  High-Voltage Applications

For high-voltage systems, the HHS and HHT PRO 5K hybrid inverters combined with HBP high-voltage batteries meet the general requirement of ≥100 V rated battery voltage.

l  Modular battery design allows flexible stacking and parallel expansion

l  Storage capacity can be easily scaled to 10 kWh and beyond

l  Integrated multi-layer protection ensures safe startup, stable insulation detection, and reliable long-term operation

Notably, both the HES 3-6K Series, HHS 3-6K and HHT PRO 5K Series hybrid inverters enable efficient direct DC charging of batteries with PV power. When paired with a smart energy meter, the system achieves real-time monitoring and precise power regulation, ensuring 100% zero grid feed-in throughout its operational lifecycle—fully satisfying the OETP’s core grid-friendly requirement.

In addition, all Hypontech PV and energy storage systems are fully compatible with the Hypon.Cloud Platform, which allows users to monitor real-time PV generation, energy storage and electricity consumption via a mobile app or desktop terminal. Leveraging advanced AI-powered intelligent dispatching algorithms, the platform accurately realizes load shifting and optimizes energy usage schedules, maximizing PV self-consumption rates for households.

Conclusion

Hungary’s OETP program uses policy incentives as a lever and technical standards as a benchmark to guide the residential energy transition. Beyond supporting local households, it sets a clear framework for the standardized, high-quality development of the residential storage market across Central and Eastern Europe.

With deep insight into policy direction and strong in-house technology capabilities, Hypontech delivers compliant, efficient, and secure energy storage solutions—helping Hungarian households move confidently toward a more independent and sustainable energy future.