OH Voltaik - Photovoltaics, Battery Storage & Wallbox
Vienna-based installer of photovoltaic systems, battery storage, and EV wallboxes for residential properties.
What customers love
- Single-day or multi-day installations completed cleanly and on schedule
- Post-installation support with prompt, competent answers to questions
- Practical solutions for complex sites, including wallbox PV surplus integration
Best for
Homeowners seeking a full PV, battery storage, and wallbox installation in Vienna.
Attribute scores
Recent reviews
I can wholeheartedly recommend OH Voltaik. From the very beginning, I was impressed by their honest and transparent advice – no unrealistic promises were made, but rather clear communication and reliable adherence to all agreements. The price-performance ratio is excellent, and the project was implemented quickly and professionally. I would particularly like to commend the assembly and installation team. The work was carried out extremely cleanly, efficiently, and with a high level of expertise. Despite varying roof shapes, a very limited roof area, and challenging site conditions (the parking space is approximately 20 meters from the house), the project – a 4.5 kWp photovoltaic system, a 5 kWh battery storage system, and a wallbox with PV surplus charging – was successfully completed. Well-thought-out and optimal solutions were found for every challenge, and the collaboration was consistently outstanding. I am extremely satisfied with the result. The system was implemented exactly according to my specifications. A clear recommendation!
Top service and highly professional execution. The OH team completed the entire installation in just one day – perfectly organized, meticulous work, and everything worked flawlessly right away. It's also worth noting that the team remained attentive in the days that followed, answering all my questions quickly and competently. Integrating our Volvo wallbox into the system was particularly important to us. This was also perfectly resolved, so excess energy is now charged directly into the batteries of our two electric cars. The entire system works perfectly. Highly recommended!
I can only praise OH Voltaik. From the very beginning, when I contacted them via Facebook, they were helpful and quickly provided a quote. The quote and the products (Goodwe) met my expectations. Therefore, OH Voltaik was awarded the contract. The installation took place in January, during what felt like the coldest week of the winter. Despite this, the installation team worked efficiently, cleanly, and professionally, and the system was operational after three days. I can therefore highly recommend OH Voltaik.
Everything went well . The staff was really really kind and happy to do little extra. Everything done professionally . On time and no delays the whole process went smoothly .
Quick and reliable service for the best price on the market