The M.V. Keldysh Research Center of the Russian Federation (part of the Roscosmos State Corporation) is developing a new spacecraft for deep space missions.
...A fundamentally new space vehicle is being created for deep space missions, ensuring an increase in the cost-effectiveness of transport operations in space, a significant increase in electrical power in space, and the creation of spacecraft with variable orbital parameters.
In addition, the promising developments include ion engines for use on advanced geostationary spacecraft, transport modules, and interorbital tugs
The largest of them, ID-500, is currently the most powerful ion engine in the world.