12.8 kWp PV system - A solar project by Wattstone & Liota Energy
Wattstone & Liota Energy - within just two days, a 12.8 kWp solar system with a substructure from Wattstone was successfully installed by our esteemed partner Liota Energy! The Wattstones serve both as a substructure and as ballast. The Wattstones are delivered ready for use to the construction site, allowing solar installers to start work immediately. The design has also impressed the customers!
WATTSTONE in the friction coefficient test
WATTSTONE 0°, 6°, 10° and 15° sits securely on smooth bitumen, bitumen with slate, PVC, EPDM, and smooth concrete. And this is true under both dry and wet conditions.
Pull test with force measuring device
Peutz was commissioned by Wattstone GmbH to measure the friction coefficients between their solar PV mounting system (WATTSTONE) for flat roofs and various roofing materials. For this purpose, samples equipped with rubber feet were used. The measurements were conducted by pulling the sample with a handheld force gauge.
Measurement method: TNO 2002-BS-R0195
The measurements were carried out under both dry and wet roof conditions using various materials such as concrete, EPDM, smooth bituminous roofing, and bituminous roofs with slate and PVC. The coefficient of friction, which describes the ratio between the downward force and the horizontal pulling force, was measured for dry and wet conditions and documented in tables. All measurements were repeated three times.
WATTSTONE PV mounting systems made of fine concrete
WATTSTONE 10° - Large Project
One of our significant projects using Wattstones has been successfully completed: A 125 kWp installation in east-west orientation with a tilt of 10 degrees. Built in just two days, to the great satisfaction of our skilled workers! Up to 70% faster installation than with traditional modular systems.
The cable management is routed centrally through the connecting elements. Looks great, doesn't it?
Time saved - With WATTSTONES, it is not necessary to rethink and check the ballasting plan.
The Wattstones 10° made of fine concrete serve as a substructure that also acts as a weight.
WATTSTONE
Idea, development, production, and distribution
The best products are simple yet effective. From the desire to improve a previously complicated installation of PV modules, WATTSTONE was created, an L-shaped stone made of fine concrete. It serves as both ballast and support. From now on, placing a PV module on a surface is a matter of minutes. No more drilling, no more additional ballast - just place the Wattstones and screw the PV modules onto them. Done!
WATTSTONE Presents
Wattstone flat roof PV mounting systems made of fine concrete!
With WATTSTONE 10°, installing PV modules becomes child's play - and in less than 90 seconds! No drilling, no stress!
WATTSTONE
WATTSTONE dealers in Germany and Austria
Qualified consulting, sales, and service for PV mounting systems, PV brackets, and PV complete systems.
WATTSTONE
Scope of delivery flat roof PV complete system for 1 PV module
1 PV Module 430Wp Trina Vertex S+ Bifacial Black
1 Microinverter 300W (Envertech EVT300S) with built-in grid protection according to VDE-AR-N 4105
Module clamps, construction protection mats, and angle wrench
2 high-quality, durable L-concrete bases (WATTSTONE 10°)
Product in Focus
Concrete stands suitable for almost any PV module.
PV mounting WATTSTONE 10° made of fine concrete for 2 PV modules in east-west configuration including clamps and construction protection mats
Discover our impressive 24 kg L-stones, which come with a practical fastening system. These high-quality L-stones are perfect for the individual installation of almost all common PV modules for an inclination angle of 10 degrees and offer a variety of advantages.
Windkanal getestet nach DIN-EN 1991-1-4: 2021WATTSTONE Production
Our WATTSTONE production facility in the Netherlands
More than 20 years of experience
Concrete parts from modern production according to DIN EN 12839:2012
WATTSTONE
Scalable capacities for a fast market
Discover our expertise in the production of high-quality PV mounting systems made of fine concrete. Thanks to our professional storage capacities and infrastructure, we are always able to respond quickly in a rapidly evolving market.
Product safety and certification
Wattstone substructures made of concrete have been extensively tested and certified. All products meet the highest technical standards and are certified by Peutz Engineering Group / Peutz bv Tested in the wind tunnel. Relevant certifications and test results include:
Test report W 15611-2E-RA-001 dated October 11, 2023 according to:
- DIN-EN 1990: 2010
- NEN-EN 1991-1-4: 2019
- DIN-EN 1991-1-4: 2021
- NEN 7250: 2021
- NEN-EN 1990: 2019
- CUR Recommendation 103: 2005
- WTG Information Sheet, September 2023
Additionally, the Investigation of static friction according to TNO 2002-BS-R0195 (Test report MvU/JGZ//W 15611-4E-NO-001).
The Wattstone substructures consist of self-compacting concrete the Strength class C55/67 as well as Cement class CEM I 52.5 R-LH/HS according to DIN EN 197. A wattstone is a precast concrete element and is CE compliant manufactured according to DIN EN 12839, which ensures the highest safety and durability for use in the field of photovoltaic systems.