Next to its majority stake in Yoast BV, Altha holds a few other, minority, investments. The companies Altha holds investments in :
- Brouwerij Wijchense Schone
A local brewery in Wijchen, Altha’s hometown.
The Solarus PowerCollector™ is a concentrating, hybrid solar photovoltaic and solar thermal panel.
An online student accommodation marketplace. Joost is also an SEO & Growth advisor at Student.com.
- Waka Waka
WakaWaka creates premium solar products for all markets.