PW-Sat is a series of Polish CubeSats designed and built by students at the Warsaw University of Technology in conjunction with the Faculty of Power and Aeronautical Engineering of Warsaw University of Technology, the Space Research Centre of Polish Academy of Sciences, and the European Space Agency.

[3][2] The PW-Sat project was created in 2004 when group of students from Warsaw University of Technology decided to build satellite compatible with CubeSat 1U standard.

[citation needed] The cost of the project was estimated to be 200,000 Polish zloty (63,205 USD), with funding coming from the university's budget, as well as from an agreement between Poland and the European Space Agency.

This battery depletion, combined with orbital maneuvers designed so the satellite would fly over Poland, delayed deployment of the tail.

However, PW-Sat2 would only deploy its sail after a 40-day window so that its secondary payload, an experimental sun sensor, can perform its tests.

PW-Sat3 will be controlled by a KP Labs Antelope on-board computer running Oryx modular flight software.