Heliostats allow control of direct sun light, so I see them as a very promising and interesting component of Solar architecture. We have a tag heliostat in this collection to mark all their uses in architecture, but let’s have a thread for products, startups and DIY projects on this topic.
Heliosfera is a very unique design solution for a domestic heliostat. Based in Poland, not yeat available to purchase.
Heliostaat - a very pragmatic heliostat from Netherlands, kit without a mirror available for € 539
Egis - a Germany based electrical company is providing a wide range of professional (so naturally, more costly) heliostats for different purposes
LightManufacturing is California based industrial company, providing a range of heliostats even with patented vacuum-based mirror curving technology. They even do plastic molding with direct power of the Sun!