Two Turkish teams (see below) are registered for the 24-hour iLumen European Solar Challenge to be held at Circuit Zolder in Belgium on 18–20 September. Unfortunately, although both teams are still hoping for a last-minute reprieve, Covid-related travel regulations seem to preclude their attending. This is a shame, because both teams are running excellent cars. Team Solaris might have another chance to shine next February in South Africa, however.
See this page for details on other teams.
Istanbul Technical University (ITU)

Challenger (B.O.W.) – “B.O.W.” stands for “Bees On Wheels,” from the ITU logo. This is B.O.W.’s last race, and the car has been getting some pre-iESC testing. They even ran their own 24-hour test race (although battery problems forced a premature finish after 11 hours). Their base is about 2,610 km from Zolder by road. However, I understand that there are still travel restrictions into Europe for Turkey. See their iESC team profile here.
Previously, ITU came 17th at WSC 13; participated at WSC 17; and came 7th at iESC 16.
Dokuz Eylül University (Solaris)

Asymmetric challenger (S10) – they believe the new car to be 44% more efficient than the 2015 model. Given the overlap with WSC 2021, I am not sure if they will still compete in South Africa as they had planned. They have been doing some pre-iESC testing. Their base is about 3,080 km from Zolder by road. However, I understand that there are still travel restrictions into Europe for Turkey. See their iESC team profile here.
Previously, Solaris participated in the WSC 13 Adventure class; came 25th at WSC 15; came 18th at WSC 19; came 9th at iESC 16; came 2nd at Albi Eco 18; and came 2nd at MSRC 19.