SOL•THOR wins German Design Award 2025
With just two to three solar modules, the new DC Power Manager SOL•THOR can cover between 34 and 50 percent of the hot water needs of a two-person household – earning it the prestigious German Design Award.
Although our self-sufficient solution will not be available on the market until the first quarter of 2025, it has already received its first award. Following the 2024 recognition of the AC ELWA 2, the SOL•THOR has now been honoured with nothing less than the German Design Award.
A self-sufficient solution without permits for expanding balcony power plants
In Germany and Austria, balcony power plants with up to 800 watts of power can operate without registration or permits. This capacity is typically achieved with two solar modules. However, installing more modules often encounters bureaucratic hurdles, as larger PV systems require permits and grid connections.
The SOL•THOR, launching in early 2025, solves this problem. As a completely self-sufficient solution, the device converts DC electricity directly into heat – without a grid connection or permit requirements. This makes SOL•THOR a simple, flexible alternative to traditional balcony power plants, or a great option for extra space on balconies, garages, or garden sheds. With a few additional standard modules (without inverters), users can achieve significant output.
Cost-efficiency with standard modules
This innovative concept avoids expensive balcony power modules with microinverters, instead leveraging cost-effective standard modules with MC4 connectors. These modules are connected directly to the DC Power Manager SOL•THOR, which efficiently converts the electricity into hot water using a heating element in a water storage tank or boiler. The number of modules can also be customized – from one to ten, depending on available space and hot water needs.
“We are bridging the gap between small balcony power plants and large grid-connected systems,” explains Dr. Gerhard Rimpler, CEO of my-PV.
Simulation results highlight impressive savings
Simulations by my-PV demonstrate the potential of this technology:
Two south-facing modules can cover 34 percent of the hot water needs for a two-person household, translating to annual savings of around 700 kWh or €245 (at €0.35/kWh).
Three modules increase the coverage to 50 percent, meeting half of the hot water demand with free solar power.
The result: a simple, sustainable solution for homes and apartments to benefit from photovoltaic energy without investing in large grid-connected systems.
Awarded the German Design Award 2025
This outstanding innovation has received the German Design Award in the “Excellent Product Design” category. The jury, comprising 46 international experts, particularly highlighted the efficiency and user-friendliness of the SOL•THOR:
"The innovative concept of using solar power directly for heat generation represents a significant step toward self-sufficient energy supply. The SOL•THOR impresses with its ability to convert DC electricity into heat efficiently and without losses, requiring no grid connection."
A glimpse into the future
“Industrial design fascinates me. If I wasn’t an electronics developer, I’d design products. That’s why I’m happy that we have won another design award for our latest achievement,” says Dr. Gerhard Rimpler.
With SOL•THOR, my-PV reinforces its reputation as a pioneer in photovoltaic heating, demonstrating that sustainable energy solutions can be efficient, user-friendly, and visually appealing.
This innovative solution addresses rising energy prices and the growing demand for self-sufficient systems, marking another step toward an environmentally friendly and cost-effective energy future.
SOL•THOR
The new DC Power Manager
As a completely self-sufficient solution, the device converts solar power into heat directly from photovoltaic modules to a heating element with minimal losses, requiring no grid connection or approval process.
More information about SOL•THORMore News
References
New feed-in regulations in the Netherlands require a rethink
A Dutch homeowner minimizes feed-in fees by utilizing surplus PV energy to heat water.
Read more...General
Minimizing feed-in costs in the Netherlands
The Netherlands introduced a fee for feeding electricity into the grid. Fees can be reduced by increasing self-consumption.
Read more...Partner
SOFAR: New compatible manufacturer for my-PV
Our grid-connected products are now compatible with inverters from SOFAR, one of the largest inverter manufacturers in China.
Read more...References
Backup for the heat pump: Maximizing self-consumption with AC ELWA 2
After three failures of their heat pump, the owners of a single-family home decided to install a PV heating element.
Read more...Support
New features with the firmware release for our AC Solutions
The latest firmware release introduces several new features for our grid-connected devices.
Read more...General
Fully utilizing electricity from the balcony power plant
Maximize the yield of a balcony power plant with heat generated from PV electricity.
Read more...