Lighter solar panels make it possible to place them on almost every roof
Client:Solarge | Duration: 2018-2019 | Role: Innovation Designer
The Challenge
Solarge was developing their first product in 2018. I was asked to join the early Solarge team to speed up the development process. The main challenges were finding waterproof solutions to attach materials to the solar panels and stop the delamination at the sides of the panel.
The Stakes & Constraints
Business Stakes
- Solarge needed a certified product
- Solarge needed a patent
- Get to the next stage to attract new investments
Technical Constraints
- Keep total weight as low as possible
- Water or moisture cannot reach electronics inside the solar panel
- Final solution must be manufacturable on a large scale
- Stop delamination at the sides
- Secure attachment to a roof
Phase 1: Adhesion and delamination
Approach
- Research ways to attach materials to the panels
- Research ways to prevent delamination on the sides of the panel
1. Attach materials to the panels

Pull-off adhesion tests to validate bond strength of various tapes.

Test samples after climate chamber cycling. Validating adhesion durability under temperature and humidity stress
Special composite plug that fuses directly with the panel.
Pull-off adhesion test for the plug.

Testing different variations in steps when applying the plug to the panel.
1. Stop delamination at sides of the panel

First tests to apply thin sheet of laminate using a heat source.

Test sample to melt substrate on side of panel
Result
- After testing various adhesion possibilities only the special plug delivered the desired adhesion strength, ease of application and withstood the climate tests.
- Despite multiple tests for delamination, the tested solutions were unsuccesful. The tests did provide valuable learning for the next iterations.
Impact
Delivered:
- Co inventor for 2 Patents: 20220190773 & 20220059713
- Research on material adhesion and delamination prevention that laid groundwork for certification process
- Product renders for website
Balanced Approach
Huib van den Heuvel“Stefan is an enthusiastic and driven designer, creative while also being very structured”
CSP Solarge & Co-founder
Flexible
Gerard de Leede“Stefan fits perfectly into teams but can also work in autonomous settings when required”
CTO Solarge & Co-founder








































