Early 2018, our partner Earth & Eternity completed fourteen net zero energy houses in the town of Valkenswaard. Combined with a number of other technical features, Autarco PV systems with kWh guarantee make sure every house meets the requirements for the net zero energy label to be approved. This project marks the start of the further cooperation between Earth & Eternity and Autarco.

Guaranteed value

EUR 85,000

System size


Solar panel

MC Series


LX Series


Apex Mounting


Earth & Eternity

Designed with solar energy in mind.

Net zero energy has always been the goal for these houses, right from the very first sketches of the architect. Because solar modules were on the table so early in the process, the architectural design could be adapted to make sure the PV systems work as efficient as possible. The houses therefore all have a single shed roof facing south, which is free from obstacles.

The houses are topped with steel roofing, that is covered completely by solar modules. With these two materials working together, a good solution for building integrated photovoltaïcs has been installed here. The actual roofing material can be cheaper because it is not in sight, and the modules can be installed on a standard mounting system with rails and clamps. This is much more efficient than complex integrated systems, both in purchasing and in installing. Also, it makes sure the modules have enough ventilation, so yield will not be affected negatively in high temperatures.

All in all, designing the PV system together with the houses not only means the system owners get the maximum possible yield from their solar modules, it is efficient to install and it looks much better too!

It takes an integrated system to achieve net zero energy.

The roofs of these semi detached and terraced houses are completely covered in Autarco MC280B modules, with an average total power of 8,4 kWp per house. This number differs between the various houses, depending on their specific energy demands. Each house is equipped with an Autarco LX10000 three-phase inverter, that is monitored by means of a LAN-stick. This way, both Earth & Eternity and their customers have insight in the performances of the PV systems. Each house also has two solar collectors from HR Solar, that provide warm water, and by doing so reducing energy demand. Because of the size of these collectors, they could be installed together with the solar modules, in order to create an integrated solution.

Apart from solar energy, these houses have a number of other technical features to meet net zero energy requirements. With it, these houses are real forerunners, since net zero energy is not required according to the building code in the Netherlands until 2020. To limit the demand for energy, the houses have high quality outer walls, with high isolation values (RC 6,5) and triple glass (HR+++). By using a steel construction frame, the houses can be partly prefabricated, and thus be built very efficiently. The applied finishes are innovative and sustainable, with low maintenance. All these design solutions and technical features make for affordable net zero energy housing, which in the end was the goal for this project.

“We are very enthusiastic about our cooperation with Autarco. We were able to move quickly and were well supported with the questions we had.”

Oscar Wyns – Manager Operations Earth & Eternity

The beginning of a partnership.

Because of the strict demands for the PV systems in their project, most importantly the guarantees on the yields of the systems, Earth & Eternity was looking for a reliable partner, that was able to deliver these PV systems, composed out of high quality products against a favorable price. Autarco’s proposition fitted very well here and we are proud to have been involved in this project. Earth & Eternity is currently working on a number of different projects for energy efficient and net zero energy housing, both apartment blocks and family homes will be realized in the near future. To be able to extend their portfolio, Earth & Eternity is looking for contractors and installation companies to support them in building these innovative projects.